Nikon AF-S Nikkor 28-70mm F/2.8D IF-ED

Standard zoom lens • Film era • Discontinued

Abbreviations

AF-S The lens is equipped with Silent Wave Motor.
D The lens relays subject-to-camera distance information to the camera.
IF Internal focusing.
ED The lens incorporates low dispersion elements.

Sample photos

28mm F/5
34mm F/16

Sample photos uploaded by users

50mm F/2.8
70mm F/5
28mm F/2.8
62mm F/4.5

Features highlight

Fast
Constant
F/2.8
1
ASPH
2
ED
IF
SWM
MFO
9 blades
⌀77
filters
TC

Specification

Production details:
Announced:February 1999
Production status: Discontinued
Original name:Nikon AF-S NIKKOR 28-70mm 1:2.8 D ED
System:Nikon F (1959)
Optical design:
Focal length range:28mm - 70mm [2.5X zoom ratio]
Speed range:F/2.8 across the focal length range
Maximum format:35mm full frame
Mount and Flange focal distance:Nikon F [46.5mm]
Diagonal angle of view:75.4° @ 28mm - 34.3° @ 70mm
Lens construction:15 elements in 11 groups
1 ASPH, 2 ED
Internal focusing (IF)
On Nikon D APS-C [1.53x] cameras:
35mm equivalent focal length range:42.8mm - 107.1mm (in terms of field of view)
35mm equivalent speed range:F/4.3 (in terms of depth of field)
Diagonal angle of view:53.6° @ 28mm - 22.8° @ 70mm
Diaphragm mechanism:
Diaphragm type:Automatic
Aperture control:Aperture ring (Manual settings + Auto Exposure setting)
Number of blades:9 (nine)
Zooming:
Zoom mechanism:Manual
Zoom control:Zoom ring
Zoom type:Rotary
Zooming method:Extends while zooming
Focusing:
Closest focusing distance:0.7m
Magnification ratio:1:8.6 @ 70mm
Focusing modes:Autofocus, manual focus
Autofocus motor:Silent Wave Motor
Manual focus control:Focusing ring
Focus mode selector:M/A - M
Manual focus override in autofocus mode:Yes
Vibration Reduction (VR):
Built-in VR:-
Physical characteristics:
Weight:935g
Maximum diameter x Length:⌀88.5×121.5mm
Weather sealing:-
Fluorine coating:-
Accessories:
Filters:Screw-type 77mm
Lens hood:HB-19 - Bayonet-type petal-shaped
Teleconverters:Nikon Teleconverter TC-14 → 39-98mm F/3.9
Nikon Teleconverter TC-14A → 39-98mm F/3.9
Nikon Teleconverter TC-200 → 56-140mm F/5.6
Nikon Teleconverter TC-201 → 56-140mm F/5.6
Source of data:
Manufacturer's technical data.

Manufacturer description #1

Melville, New York, October 28, 1998 - Nikon has brought the advantages of its Silent Wave Motor and Autofocus (AF) technologies to the photojournalism, action and low-light categories with two new lenses - the AF-S Zoom-Nikkor 28-70mm f/2.8D IF-ED and the AF-S Zoom-Nikkor 80-200mm f/2.8D IF-ED.

The new lenses incorporate AF-S Nikkor lens technology, which provides faster and more accurate autofocus operation, along with an all-new optical design to make them smaller and lighter for more effective field use. Autofocus performance is formidable, allowing the user to shoot up to eight perfectly focused frames per second, with Focus Tracking and Lock-On™.

The lenses are also perfectly balanced, with Internal Focusing (IF) for ultra-fast autofocus performance, compact design, lightweight construction, critical balance and closer focusing ability. In addition, Nikon's exclusive Silent Wave Motor (SWM) technology enables swifter autofocusing with exceptional accuracy and powerful, whisper-quiet operation. Each AF-S Nikkor lens' Silent Wave Motor interfaces directly with the lenses' focusing elements. Because there is no gear-train, there is none of the power loss or noise associated with conventional gear-type lens driving systems. Virtually silent, Nikon's new AF lenses provide significant advantages.

Each of the new lenses boasts a newly-designed optical system, demonstrating Nikon's unsurpassed status as the world's preeminent designer of high-performance optics. With exclusive Extra-Low Dispersion (ED) optical glass, and for the wide-angle zoom a new molded-glass aspherical lens design, the two new lenses offer minimized distortion and chromatic/spherical aberration, while delivering superior resolution, color brilliance, brightness and contrast. A nine-blade, rounded diaphragm makes out-of-focus elements in the picture appear more natural.

The advanced M/A mode featured in all AF-S Nikkor lenses allows the photographer to switch instantly from autofocus to manual performance, even during AF servo operation, with virtually no lag time. As with all AF and AF-S Nikkor lenses, there is no power consumption during manual focusing.

Comfort and usability are ensured with a wide variety of features for streamlined performance. A rotating zoom ring offers precise zoom control, and the filter attachment does not rotate during focusing and zooming. Dedicated lens hoods effectively minimize stray light. A detachable tripod mounting collar is provided with the 80-200mm lens. And, the lenses are built to be dust- and moisture-resistant.

The new lenses, like the 300mm f/2.8D, 400mm f/2.8D, 500mm f/4D and 600mm f/4D before them, deliver superior fast and accurate autofocus performance with Nikon's award-winning, flagship F5 camera body and the Nikon F4, F4S, N90s, N70, Pronea 6i and Pronea S cameras. In addition, the new lenses can be used for manual focusing with virtually every Nikon single lens reflex (SLR) camera. System compatibility is ensured through the use of Nikon's exclusive F-lens mount, part of the legacy of life-long flexibility and interchangeability that Nikon offers with its Total Imaging System.

Nikon AF-S Zoom-Nikkor 28-70mm F/2.8D IF-ED Lens

  • Nikon's exclusive Silent Wave Motor enables fast, accurate and quiet autofocus performance.
  • Newly-designed optical system for superior optical performance.
  • Designed with a molded-glass aspherical lens for minimized distortion, higher resolution and superior contrast.
  • Two ED (extra-low dispersion) glasses minimize chromatic aberrations.
  • Nikon Integrated Coating provides exceptional color balance and image contrast
  • Rounded diaphragm opening (9 blades) makes out-of-focus elements appear more natural.
  • Distance Signal enables the highest compatibility with Nikon's advanced SLR designs.
  • IF (internal focusing) ensures fast AF operation, compact, lightweight construction and a closer focusing distance.
  • M/A mode enables switching from autofocus to manual focus, even during AF servo operation, with virtually no lag time.
  • No power consumption during manual focusing operation.
  • Filter attachment does not rotate during focusing and zooming.
  • Rotating zoom ring for precise zoom control.
  • Dedicated lens hood effectively minimizes stray light.
  • Dust- and moisture-resistant design.

Manufacturer description #2

Equipped with all of Nikon’s exclusive lens technologies, this is one of the world’s highest performing lenses. Features include Silent Wave Motor (SWM), aspherical lens element, two ED glasses, 9-blade rounded aperture, M/A mode, Super Integrated Optical coating, Nikon D-type (Distance Signal Technology) and IF (Internal Focusing) design. Rotating zoom ring offers precise zoom control. Filter attachment does not rotate during focusing or zooming. Dedicated lens shade effectively shields against stray light. Has a dust and moisture-resistant design. Filter size is 77mm

From the editor

Totally outstanding all round performer. It can focus down to 70cm, with a close focusing capability at all focal lengths of 50cm. The SWM ensures the AF is very quick and positive. Images are extremely sharp at all focal lengths and apertures, even wide open, with a highly commendable flat field. Flare and ghosting are well controlled at apertures below f5.6, but above this care needs to be taken shooting against the light.

Compared to other standard zoom lenses in the Nikon F system

  • Fastest speed (F/2.8), along with 4 other models
  • Constant speed (F/2.8), along with 5 other models
  • One of the heaviest (935g)

Other standard zoom lenses in the Nikon F system

Sorted by focal length and speed, in ascending order

Nikon F mount (30)
Nikon AF Nikkor 24-50mm F/3.3-4.5 ⌀62 1987 Compare46
Nikon AF Nikkor 24-50mm F/3.3-4.5D ⌀62 1995 Compare46
Nikon AF-S Nikkor 24-70mm F/2.8G ED ⌀77Pro 2007 Compare40
Nikon AF-S Nikkor 24-70mm F/2.8E ED VR ⌀82Pro 2015 Compare61
Nikon AF-S Nikkor 24-85mm F/3.5-4.5G IF-ED ⌀67 2002 Compare72
Nikon AF-S Nikkor 24-85mm F/3.5-4.5G ED VR ⌀72 2012 Compare82
Nikon AF Nikkor 24-85mm F/2.8-4D IF ⌀72 2000 Compare74
Nikon AF-S Nikkor 24-120mm F/4G IF-ED VR ⌀77Pro 2010 Compare82
Nikon AF Nikkor 24-120mm F/3.5-5.6D IF ⌀72 1996 Compare64
Nikon AF-S Nikkor 24-120mm F/3.5-5.6G IF-ED VR ⌀72 2003 Compare62
Nikon AF Nikkor 28-70mm F/3.5-4.5 ⌀52 1991 Compare44
Nikon AF Nikkor 28-70mm F/3.5-4.5D ⌀52 1992 Compare44
Nikon AF Nikkor 28-80mm F/3.5-5.6D [I] ⌀58 1995 Compare54
Nikon AF Nikkor 28-80mm F/3.5-5.6D [II] ⌀58 1999 Compare54
Nikon AF Nikkor 28-80mm F/3.3-5.6G ⌀58 2001 Compare54
Nikon AF Nikkor 28-85mm F/3.5-4.5 [I] ⌀62 1986 Compare54
Nikon AF Nikkor 28-85mm F/3.5-4.5 [II] ⌀62 1990 Compare54
Nikon AF Nikkor 28-100mm F/3.5-5.6G ⌀62 2002 Compare64
Nikon AF Nikkor 28-105mm F/3.5-4.5D IF ⌀62 1998 Compare74
Nikon AF Nikkor 35-70mm F/3.3-4.5 [I] ⌀52 1986 Compare46
Nikon AF Nikkor 35-70mm F/3.3-4.5 [II] ⌀52 1989 Compare46
Nikon AF Nikkor 35-70mm F/2.8 ⌀62Push/pull 1987 Compare34
Nikon AF Nikkor 35-70mm F/2.8D ⌀62Push/pull 1992 Compare34
Nikon AF Nikkor 35-80mm F/4-5.6D [I] ⌀52 1994 Compare46
Nikon AF Nikkor 35-80mm F/4-5.6D [II] ⌀52 1995 Compare46
Nikon AF Nikkor 35-105mm F/3.5-4.5 [I] ⌀52 1986 Compare56
Nikon AF Nikkor 35-105mm F/3.5-4.5 [II] ⌀52Push/pull 1991 Compare56
Nikon AF Nikkor 35-105mm F/3.5-4.5D IF ⌀52Push/pull 1994 Compare56
Nikon AF Nikkor 35-135mm F/3.5-4.5 [I] ⌀62 1986 Compare46
Nikon AF Nikkor 35-135mm F/3.5-4.5 [II] ⌀62Push/pull 1988 Compare46

Lenses with similar focal length range

Sorted by manufacturer name

Nikon F mount (31)
P. Angenieux AF 28-70mm F/2.6 ⌀77Pro 1990 Compare32
Sigma 24-70mm F/2.8 EX DG IF HSM ⌀82Pro 2008 Compare40
Sigma 24-70mm F/2.8 EX DG Macro ⌀82Pro 2004 Compare42
Sigma 28-70mm F/2.8-4 DG ⌀58 2005 Compare54
Sigma 28-70mm F/2.8 EX DG ⌀67Pro 2004 Compare52
Sigma 24-70mm F/3.5-5.6 Aspherical UC ZEN ⌀55 1994 Compare54
Sigma 28-70mm F/2.8 ZEN ⌀72Pro 1992 Compare32
Sigma 28-70mm F/2.8 EX Aspherical ⌀77Pro 1998 Compare22
Sigma 28-70mm F/2.8-4 UC ZEN ⌀55 1994 Compare44
Sigma 28-70mm F/2.8-4 ⌀58 2002 Compare44
Sigma 24-70mm F/3.5-5.6 Aspherical HF ⌀62 2001 Compare54
Sigma 24-70mm F/2.8 EX DG Aspherical DF ⌀82Pro 2001 Compare42
Sigma 28-70mm F/3.5-4.5 UC ZEN ⌀52 1989 Compare44
Sigma 24-70mm F/2.8 DG OS HSM | A ⌀82Pro 2017 Compare61
Sigma 28-70mm F/3.5-4.5 ⌀52 1988 Compare44
Sigma 28-70mm F/2.8 EX Aspherical DF ⌀77Pro 2001 Compare22
Tamron SP AF 28-75mm F/2.8 XR Di LD Aspherical [IF] Macro A09 ⌀67Pro 2003 Compare52
Tamron SP AF 24-70mm F/2.8 Di [VC] USD A007 ⌀82Pro 2012 Compare40
Tamron AF 24-70mm F/3.3-5.6 Aspherical 73D ⌀62 1994 Compare54
Tamron AF 28-70mm F/3.5-4.5 159D ⌀52 1991 Compare34
Tamron AF 28-70mm F/3.5-4.5 259D ⌀52 1994 Compare34
Tamron SP 24-70mm F/2.8 Di VC USD G2 A032 ⌀82Pro 2017 Compare60
Tokina AT-X Pro AF 28-70mm F/2.8 SV ⌀77Pro 2002 Compare32
Tokina AT-X Pro AF 28-70mm F/2.6-2.8 ⌀77 1994 Compare13
Tokina AF SD 28-70mm F/2.8-4.5 ⌀52 1990 Compare34
Tokina AT-X AF 28-70mm F/2.8 ⌀72Pro 1988 Compare22
Tokina AT-X Pro AF SD 24-70mm F/2.8 [IF] ⌀82Pro 2015 Compare32
Tokina AT-X Pro AF 28-70mm F/2.6-2.8 II ⌀77 1997 Compare13
Tokina AF SD 28-70mm F/3.5-4.5 II ⌀52 1990 Compare34
Tokina AF SD 28-70mm F/3.5-4.5 ⌀52 1988 Compare34
Vivitar Series 1 AF 28-70mm F/2.8 VMC ⌀72Pro 1994 Compare32
Subscribe
Notify of
guest

Copy this code

and paste it here *

0 comments
Inline Feedbacks
View all comments

Copyright © 2012-2024 Evgenii Artemov. All rights reserved. Translation and/or reproduction of website materials in any form, including the Internet, is prohibited without the express written permission of the website owner.

Chromatic aberration

There are two kinds of chromatic aberration: longitudinal and lateral. Longitudinal chromatic aberration is a variation in location of the image plane with changes in wave lengths. It produces the image point surrounded by different colors which result in a blurred image in black-and-white pictures. Lateral chromatic aberration is a variation in image size or magnification with wave length. This aberration does not appear at axial image points but toward the surrounding area, proportional to the distance from the center of the image field. Stopping down the lens has only a limited effect on these aberrations.

Spherical aberration

Spherical aberration is caused because the lens is round and the film or image sensor is flat. Light entering the edge of the lens is more severely refracted than light entering the center of the lens. This results in a blurred image, and also causes flare (non-image forming internal reflections). Stopping down the lens minimizes spherical aberration and flare, but introduces diffraction.

Astigmatism

Astigmatism in a lens causes a point in the subject to be reproduced as a line in the image. The effect becomes worse towards the corner of the image. Stopping down the lens has very little effect.

Coma

Coma in a lens causes a circular shape in the subject to be reproduced as an oval shape in the image. Stopping down the lens has almost no effect.

Curvature of field

Curvature of field is the inability of a lens to produce a flat image of a flat subject. The image is formed instead on a curved surface. If the center of the image is in focus, the edges are out of focus and vice versa. Stopping down the lens has a limited effect.

Distortion

Distortion is the inability of a lens to capture lines as straight across the entire image area. Barrel distortion causes straight lines at the edges of the frame to bow toward the center of the image, producing a barrel shape. Pincushion distortion causes straight lines at the edges of the frame to curve in toward the lens axis. Distortion, whether barrel or pincushion type, is caused by differences in magnification; stopping down the lens has no effect at all.

The term "distortion" is also sometimes used instead of the term "aberration". In this case, other types of optical aberrations may also be meant, not necessarily geometric distortion.

Diffraction

Classically, light is thought of as always traveling in straight lines, but in reality, light waves tend to bend around nearby barriers, spreading out in the process. This phenomenon is known as diffraction and occurs when a light wave passes by a corner or through an opening. Diffraction plays a paramount role in limiting the resolving power of any lens.

Doublet

Doublet is a lens design comprised of two elements grouped together. Sometimes the two elements are cemented together, and other times they are separated by an air gap. Examples of this type of lens include achromatic close-up lenses.

Dynamic range

Dynamic range is the maximum range of tones, from darkest shadows to brightest highlights, that can be produced by a device or perceived in an image. Also called tonal range.

Resolving power

Resolving power is the ability of a lens, photographic emulsion or imaging sensor to distinguish fine detail. Resolving power is expressed in terms of lines per millimeter that are distinctly recorded in the final image.

Vignetting

Vignetting is the darkening of the corners of an image relative to the center of the image. There are three types of vignetting: optical, mechanical, and natural vignetting.

Optical vignetting is caused by the physical dimensions of a multi-element lens. Rear elements are shaded by elements in front of them, which reduces the effective lens opening for off-axis incident light. The result is a gradual decrease of the light intensity towards the image periphery. Optical vignetting is sensitive to the aperture and can be completely cured by stopping down the lens. Two or three stops are usually sufficient.

Mechanical vignetting occurs when light beams are partially blocked by external objects such as thick or stacked filters, secondary lenses, and improper lens hoods.

Natural vignetting (also known as natural illumination falloff) is not due to the blocking of light rays. The falloff is approximated by the "cosine fourth" law of illumination falloff. Wide-angle rangefinder designs are particularly prone to natural vignetting. Stopping down the lens cannot cure it.

Flare

Bright shapes or lack of contrast caused when light is scattered by the surface of the lens or reflected off the interior surfaces of the lens barrel. This is most often seen when the lens is pointed toward the sun or another bright light source. Flare can be minimized by using anti-reflection coatings, light baffles, or a lens hood.

Ghosting

Glowing patches of light that appear in a photograph due to lens flare.

Retrofocus design

Design with negative lens group(s) positioned in front of the diaphragm and positive lens group(s) positioned at the rear of the diaphragm. This provides a short focal length with a long back focus or lens-to-film distance, allowing for movement of the reflex mirror in SLR cameras. Sometimes called an inverted telephoto lens.

Anastigmat

A photographic lens completely corrected for the three main optical aberrations: spherical aberration, coma, and astigmatism.

By the mid-20th century, the vast majority of lenses were close to being anastigmatic, so most manufacturers stopped including this characteristic in lens names and/or descriptions and focused on advertising other features (anti-reflection coating, for example).

Rectilinear design

Design that does not introduce significant distortion, especially ultra-wide angle lenses that preserve straight lines and do not curve them (unlike a fisheye lens, for instance).

Focus shift

A change in the position of the plane of optimal focus, generally due to a change in focal length when using a zoom lens, and in some lenses, with a change in aperture.

Transmittance

The amount of light that passes through a lens without being either absorbed by the glass or being reflected by glass/air surfaces.

Modulation Transfer Function (MTF)

When optical designers attempt to compare the performance of optical systems, a commonly used measure is the modulation transfer function (MTF).

The components of MTF are:

The MTF of a lens is a measurement of its ability to transfer contrast at a particular resolution from the object to the image. In other words, MTF is a way to incorporate resolution and contrast into a single specification.

Knowing the MTF curves of each photographic lens and camera sensor within a system allows a designer to make the appropriate selection when optimizing for a particular resolution.

Veiling glare

Lens flare that causes loss of contrast over part or all of the image.

Anti-reflection coating

When light enters or exits an uncoated lens approximately 5% of the light is reflected back at each lens-air boundary due to the difference in refractive index. This reflected light causes flare and ghosting, which results in deterioration of image quality. To counter this, a vapor-deposited coating that reduces light reflection is applied to the lens surface. Early coatings consisted of a single thin film with the correct refractive index differences to cancel out reflections. Multi-layer coatings, introduced in the early 1970s, are made up of several such films.

Benefits of anti-reflection coating:

Circular fisheye

Produces a 180° angle of view in all directions (horizontal, vertical and diagonal).

The image circle of the lens is inscribed in the image frame.

Diagonal (full-frame) fisheye

Covers the entire image frame. For this reason diagonal fisheye lenses are often called full-frame fisheyes.

Extension ring

Extension rings can be used singly or in combination to vary the reproduction ratio of lenses. They are mounted between the camera body and the lens. As a rule, the effect becomes stronger the shorter the focal length of the lens in use, and the longer the focal length of the extension ring.

View camera

A large-format camera with a ground-glass viewfinder at the image plane for viewing and focusing. The photographer must stick his head under a cloth hood in order to see the image projected on the ground glass. Because of their 4x5-inch (or larger) negatives, these cameras can produce extremely high-quality results. View cameras also usually support movements.

135 cartridge-loaded film

43.27 24 36
  • Introduced: 1934
  • Frame size: 36 × 24mm
  • Aspect ratio: 3:2
  • Diagonal: 43.27mm
  • Area: 864mm2
  • Double perforated
  • 8 perforations per frame

120 roll film

71.22 44 56
  • Introduced: 1901
  • Frame size: 56 × 44mm
  • Aspect ratio: 11:14
  • Diagonal: 71.22mm
  • Area: 2464mm2
  • Unperforated

120 roll film

79.2 56 56
  • Introduced: 1901
  • Frame size: 56 × 56mm
  • Aspect ratio: 1:1
  • Diagonal: 79.2mm
  • Area: 3136mm2
  • Unperforated

120 roll film

89.64 56 70
  • Introduced: 1901
  • Frame size: 70 × 56mm
  • Aspect ratio: 5:4
  • Diagonal: 89.64mm
  • Area: 3920mm2
  • Unperforated

220 roll film

71.22 44 56
  • Introduced: 1965
  • Frame size: 56 × 44mm
  • Aspect ratio: 11:14
  • Diagonal: 71.22mm
  • Area: 2464mm2
  • Unperforated
  • Double the length of 120 roll film

220 roll film

79.2 56 56
  • Introduced: 1965
  • Frame size: 56 × 56mm
  • Aspect ratio: 1:1
  • Diagonal: 79.2mm
  • Area: 3136mm2
  • Unperforated
  • Double the length of 120 roll film

220 roll film

89.64 56 70
  • Introduced: 1965
  • Frame size: 70 × 56mm
  • Aspect ratio: 5:4
  • Diagonal: 89.64mm
  • Area: 3920mm2
  • Unperforated
  • Double the length of 120 roll film

Shutter speed ring with "F" setting

The "F" setting disengages the leaf shutter and is set when using only the focal plane shutter in the camera body.

Catch for disengaging cross-coupling

The shutter and diaphragm settings are cross-coupled so that the diaphragm opens to a corresponding degree when faster shutter speeds are selected. The cross-coupling can be disengaged at the press of a catch.

Cross-coupling button

With the cross-coupling button depressed speed/aperture combinations can be altered without changing the Exposure Value setting.

M & X sync

The shutter is fully synchronized for M- and X-settings so that you can work with flash at all shutter speeds.

In M-sync, the shutter closes the flash-firing circuit slightly before it is fully open to catch the flash at maximum intensity. The M-setting is used for Class M flash bulbs.

In X-sync, the flash takes place when the shutter is fully opened. The X-setting is used for electronic flash.

X sync

The shutter is fully synchronized for X-setting so that you can work with flash at all shutter speeds.

In X-sync, the flash takes place when the shutter is fully opened. The X-setting is used for electronic flash.

Silent Wave Motor

Silent Wave Motor is available in variants with or without a gear system. Nikon never specifies which variant is used in a particular lens, however, in budget models, as a rule, gear-type Silent Wave Motor is used, without manual focus override in autofocus mode. This can be assumed by the presence of the A - M switch on the lens barrel, instead of M/A - M.

M/A - M

M/AAutofocus mode that allows switching to manual focus with virtually no time lag - even during autofocus servo operation and regardless of autofocus mode in use.
MManual focus mode.

Aspherical elements

Aspherical elements (ASPH, XA, XGM) are used in wide-angle lenses for correction of distortion and in large-aperture lenses for correction of spherical aberration, astigmatism and coma, thus ensuring excellent sharpness and contrast even at fully open aperture. The effect of the aspherical element is determined by its position within the optical formula: the more the aspherical element moves away from the aperture stop, the more it influences distortion; close to the aperture stop it can be particularly used to correct spherical aberration. Aspherical element can substitute one or several regular spherical elements to achieve similar or better optical results, which allows to develop more compact and lightweight lenses.

Use of aspherical elements has its downsides: it leads to non-uniform rendering of out-of-focus highlights. This effect usually appears as "onion-like" texture of concentric rings or "wooly-like" texture and is caused by very slight defects in the surface of aspherical element. It is difficult to predict such effect, but usually it occurs when the highlights are small enough and far enough out of focus.

Low dispersion elements

Low dispersion elements (ED, LD, SD, UD etc) minimize chromatic aberrations and ensure excellent sharpness and contrast even at fully open aperture. This type of glass exhibits low refractive index, low dispersion, and exceptional partial dispersion characteristics compared to standard optical glass. Two lenses made of low dispersion glass offer almost the same performance as one fluorite lens.

Low dispersion elements

Low dispersion elements (ED, LD, SD, UD etc) minimize chromatic aberrations and ensure excellent sharpness and contrast even at fully open aperture. This type of glass exhibits low refractive index, low dispersion, and exceptional partial dispersion characteristics compared to standard optical glass. Two lenses made of low dispersion glass offer almost the same performance as one fluorite lens.

Canon's Super UD, Nikon's Super ED, Pentax' Super ED, Sigma's FLD ("F" Low Dispersion), Sony' Super ED and Tamron's XLD glasses are the highest level low dispersion glasses available with extremely high light transmission. These optical glasses have a performance equal to fluorite glass.

High-refraction low-dispersion elements

High-refraction low-dispersion elements (HLD) minimize chromatic aberrations and ensure excellent sharpness and contrast even at fully open aperture.

High Index, High Dispersion elements

High Index, High Dispersion elements (HID) minimize chromatic aberrations and ensure excellent sharpness and contrast even at fully open aperture.

Anomalous partial dispersion elements

Anomalous partial dispersion elements (AD) minimize chromatic aberrations and ensure excellent sharpness and contrast even at fully open aperture.

Fluorite elements

Synthetic fluorite elements (FL) minimize chromatic aberrations and ensure excellent sharpness and contrast even at fully open aperture. Compared with optical glass, fluorite lenses have a considerably lower refraction index, low dispersion and extraordinary partial dispersion, and high transmission of infrared and ultraviolet light. They are also significantly lighter than optical glass.

According to Nikon, fluorite easily cracks and is sensitive to temperature changes that can adversely affect focusing by altering the lens' refractive index. To avoid this, Canon, as the manufacturer most widely using fluorite in its telephoto lenses, never uses fluorite in the front and rear lens elements, and the white coating is applied to the lens barrels to reflect light and prevent the lens from overheating.

Short-wavelength refractive elements

High and specialized-dispersion elements (SR) refract light with wavelengths shorter than that of blue to achieve highly precise chromatic aberration compensation. This technology also results in smaller and lighter lenses.

Blue Spectrum Refractive Optics

Organic Blue Spectrum Refractive Optics material (BR Optics) placed between convex and concave elements made from conventional optical glass provides more efficient correction of longitudinal chromatic aberrations in comparison with conventional technology.

Diffraction elements

Diffraction elements (DO, PF) cancel chromatic aberrations at various wavelengths. This technology results in smaller and lighter lenses in comparison with traditional designs with no compromise in image quality.

High refractive index elements

High refractive index elements (HR, HRI, XR etc) minimize field curvature and spherical aberration. High refractive index element can substitute one or several regular elements to achieve similar or better optical results, which allows to develop more compact and lightweight lenses.

Apodization element

Apodization element (APD) is in fact a radial gradient filter. It practically does not change the characteristics of light beam passing through its central part but absorbs the light at the periphery. It sort of softens the edges of the aperture making the transition from foreground to background zone very smooth and results in very attractive, natural looking and silky smooth bokeh.

Unable to follow the link

You are already on the page dedicated to this lens.

Cannot perform comparison

Cannot compare the lens to itself.

Image stabilizer

A technology used for reducing or even eliminating the effects of camera shake. Gyro sensors inside the lens detect camera shake and pass the data to a microcomputer. Then an image stabilization group of elements controlled by the microcomputer moves inside the lens and compensates camera shake in order to keep the image static on the imaging sensor or film.

The technology allows to increase the shutter speed by several stops and shoot handheld in such lighting conditions and at such focal lengths where without image stabilizer you have to use tripod, decrease the shutter speed and/or increase the ISO setting which can lead to blurry and noisy images.

Original name

Lens name as indicated on the lens barrel (usually on the front ring). With lenses from film era, may vary slightly from batch to batch.

Format

Format refers to the shape and size of film or image sensor.

35mm is the common name of the 36x24mm film format or image sensor format. It has an aspect ratio of 3:2, and a diagonal measurement of approximately 43mm. The name originates with the total width of the 135 film which was the primary medium of the format prior to the invention of the full frame digital SLR. Historically the 35mm format was sometimes called small format to distinguish it from the medium and large formats.

APS-C is an image sensor format approximately equivalent in size to the film negatives of 25.1x16.7mm with an aspect ratio of 3:2.

Medium format is a film format or image sensor format larger than 36x24mm (35mm) but smaller than 4x5in (large format).

Angle of view

Angle of view describes the angular extent of a given scene that is imaged by a camera. It is used interchangeably with the more general term field of view.

As the focal length changes, the angle of view also changes. The shorter the focal length (eg 18mm), the wider the angle of view. Conversely, the longer the focal length (eg 55mm), the smaller the angle of view.

A camera's angle of view depends not only on the lens, but also on the sensor. Imaging sensors are sometimes smaller than 35mm film frame, and this causes the lens to have a narrower angle of view than with 35mm film, by a certain factor for each sensor (called the crop factor).

This website does not use the angles of view provided by lens manufacturers, but calculates them automatically by the following formula: 114.6 * arctan (21.622 / CF * FL),

where:

CF – crop-factor of a sensor,
FL – focal length of a lens.

Mount

A lens mount is an interface — mechanical and often also electrical — between a camera body and a lens.

A lens mount may be a screw-threaded type, a bayonet-type, or a breech-lock type. Modern camera lens mounts are of the bayonet type, because the bayonet mechanism precisely aligns mechanical and electrical features between lens and body, unlike screw-threaded mounts.

Lens mounts of competing manufacturers (Canon, Leica, Nikon, Pentax, Sony etc.) are always incompatible. In addition to the mechanical and electrical interface variations, the flange focal distance (distance from the mechanical rear end surface of the lens mount to the focal plane) is also different.

Lens construction

Lens construction – a specific arrangement of elements and groups that make up the optical design, including type and size of elements, type of used materials etc.

Element - an individual piece of glass which makes up one component of a photographic lens. Photographic lenses are nearly always built up of multiple such elements.

Group – a cemented together pieces of glass which form a single unit or an individual piece of glass. The advantage is that there is no glass-air surfaces between cemented together pieces of glass, which reduces reflections.

Focal length

The focal length is the factor that determines the size of the image reproduced on the focal plane, picture angle which covers the area of the subject to be photographed, depth of field, etc.

Speed

The largest opening or stop at which a lens can be used is referred to as the speed of the lens. The larger the maximum aperture is, the faster the lens is considered to be. Lenses that offer a large maximum aperture are commonly referred to as fast lenses, and lenses with smaller maximum aperture are regarded as slow.

In low-light situations, having a wider maximum aperture means that you can shoot at a faster shutter speed or work at a lower ISO, or both.

Closest focusing distance

The minimum distance from the focal plane (film or sensor) to the subject where the lens is still able to focus.

Closest working distance

The distance from the front edge of the lens to the subject at the maximum magnification.

Magnification ratio

Determines how large the subject will appear in the final image. Magnification is expressed as a ratio. For example, a magnification ratio of 1:1 means that the image of the subject formed on the film or sensor will be the same size as the subject in real life. For this reason, a 1:1 ratio is often called "life-size".

Manual focus override in autofocus mode

Allows to perform final focusing manually after the camera has locked the focus automatically. Note that you don't have to switch camera and/or lens to manual focus mode.

Manual focus override in autofocus mode

Allows to perform final focusing manually after the camera has locked the focus automatically. Note that you don't have to switch camera and/or lens to manual focus mode.

Electronic manual focus override is performed in the following way: half-press the shutter button, wait until the camera has finished the autofocusing and then focus manually without releasing the shutter button using the focusing ring.

Fixed focus

There is no helicoid in this lens and everything is in focus from the closest focusing distance to infinity.

Internal focusing (IF)

Conventional lenses employ an all-group shifting system, in which all lens elements shift during focusing. The IF system, however, shifts only part of the optics during focusing. The advantages of the IF system are:

Manual diaphragm

The diaphragm must be stopped down manually by rotating the detent aperture ring.

Preset diaphragm

The lens has two rings, one is for pre-setting, while the other is for normal diaphragm adjustment. The first ring must be set at the desired aperture, the second ring then should be fully opened for focusing, and turned back for stop down to the pre-set value.

Semi-automatic diaphragm

The lens features spring mechanism in the diaphragm, triggered by the shutter release, which stops down the diaphragm to the pre-set value. The spring needs to be reset manually after each exposure to re-open diaphragm to its maximum value.

Automatic diaphragm

The camera automatically closes the diaphragm down during the shutter operation. On completion of the exposure, the diaphragm re-opens to its maximum value.

Fixed diaphragm

The aperture setting is fixed at F/2.8 on this lens, and cannot be adjusted.

Automatic aperture control

For Programmed Auto or Shutter-priority Auto shooting, lock the lens aperture at its minimum value.

Number of blades

As a general rule, the more blades that are used to create the aperture opening in the lens, the rounder the out-of-focus highlights will be.

Some lenses are designed with curved diaphragm blades, so the roundness of the aperture comes not from the number of blades, but from their shape. However, the fewer blades the diaphragm has, the more difficult it is to form a circle, regardless of rounded edges.

At maximum aperture, the opening will be circular regardless of the number of blades.

Weight

Excluding case or pouch, caps and other detachable accessories (lens hood, close-up adapter, tripod adapter etc.).

Maximum diameter x Length

Excluding case or pouch, caps and other detachable accessories (lens hood, close-up adapter, tripod adapter etc.).

For lenses with collapsible design, the length is indicated for the working (retracted) state.

Weather sealing

A rubber material which is inserted in between each externally exposed part (manual focus and zoom rings, buttons, switch panels etc.) to ensure it is properly sealed against dust and moisture.

Lenses that accept front mounted filters typically do not have gaskets behind the filter mount. It is recommended to use a filter for complete weather resistance when desired.

Fluorine coating

Helps keep lenses clean by reducing the possibility of dust and dirt adhering to the lens and by facilitating cleaning should the need arise. Applied to the outer surface of the front lens element over multi-coatings.

Filters

Lens filters are accessories that can protect lenses from dirt and damage, enhance colors, minimize glare and reflections, and add creative effects to images.

Lens hood

A lens hood or lens shade is a device used on the end of a lens to block the sun or other light source in order to prevent glare and lens flare. Flare occurs when stray light strikes the front element of a lens and then bounces around within the lens. This stray light often comes from very bright light sources, such as the sun, bright studio lights, or a bright white background.

The geometry of the lens hood can vary from a plain cylindrical or conical section to a more complex shape, sometimes called a petal, tulip, or flower hood. This allows the lens hood to block stray light with the higher portions of the lens hood, while allowing more light into the corners of the image through the lowered portions of the hood.

Lens hoods are more prominent in long focus lenses because they have a smaller viewing angle than that of wide-angle lenses. For wide angle lenses, the length of the hood cannot be as long as those for telephoto lenses, as a longer hood would enter the wider field of view of the lens.

Lens hoods are often designed to fit onto the matching lens facing either forward, for normal use, or backwards, so that the hood may be stored with the lens without occupying much additional space. In addition, lens hoods can offer some degree of physical protection for the lens due to the hood extending farther than the lens itself.

Teleconverters

Teleconverters increase the effective focal length of lenses. They also usually maintain the closest focusing distance of lenses, thus increasing the magnification significantly. A lens combined with a teleconverter is normally smaller, lighter and cheaper than a "direct" telephoto lens of the same focal length and speed.

Teleconverters are a convenient way of enhancing telephoto capability, but it comes at a cost − reduced maximum aperture. Also, since teleconverters magnify every detail in the image, they logically also magnify residual aberrations of the lens.

Lens caps

Scratched lens surfaces can spoil the definition and contrast of even the finest lenses. Lens covers are the best and most inexpensive protection available against dust, moisture and abrasion. Safeguard lens elements - both front and rear - whenever the lens is not in use.

Rotary zoom

The change of focal length is achieved by turning the zoom ring and the manual focusing - by turning the separate focusing ring.

Push/pull zooming allows for faster change of focal length, however conventional method based on the rotation of the zoom ring provides more accurate and smooth zooming.

Push/pull zoom

The change of focal length happens when the photographer moves the ring towards the mount or backwards.

Push/pull zooming allows for faster change of focal length, however conventional method based on the rotation of the zoom ring provides more accurate and smooth zooming.

Zoom lock

The lens features a zoom lock to keep the zoom ring fixed. This function is convenient for carrying a camera with the lens on a strap because it prevents the lens from extending.

Zoom clutch

To set the manual zoom mode, pull the zoom ring towards the camera side until the words "POWER ZOOM" disappear.