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Fujifilm Fujinon XF 10-24mm F/4 R OIS WR

Wide-angle zoom lens • Digital era

XF The lens is designed for Fujifilm APS-C digital mirrorless cameras.
R The lens is equipped with aperture ring.
OIS The lens is equipped with optical image stabilizer.
WR Dust-proof and Weather-Resistant lens.

Model history

Fujifilm Fujinon XF 10-24mm F/4 R OIS WRAPS-CA14 - 100.5mE72 2020 new
Fujifilm Fujinon XF 10-24mm F/4 R OISAPS-CA14 - 100.5mE72 2013

Fujifilm X-Pro1

APS-C digital mirrorless camera

Announced: Jan 2012
Mount: Fujifilm X
Format: 23.6 × 15.6mm - 1.53x
Resolution: 4896 × 3264 - 16 MP
Sensor type: X-Trans CMOS
Image stabilizer: None

Fujifilm X-E1

APS-C digital mirrorless camera

Announced: Sep 2012
Mount: Fujifilm X
Format: 23.6 × 15.6mm - 1.53x
Resolution: 4896 × 3264 - 16 MP
Sensor type: X-Trans CMOS
Image stabilizer: None

Fujifilm X-M1

APS-C digital mirrorless camera

Announced: Jun 2013
Mount: Fujifilm X
Format: 23.6 × 15.6mm - 1.53x
Resolution: 4896 × 3264 - 16 MP
Sensor type: X-Trans CMOS
Image stabilizer: None

Fujifilm X-A1

APS-C digital mirrorless camera

Announced: Sep 2013
Mount: Fujifilm X
Format: 23.6 × 15.6mm - 1.53x
Resolution: 4896 × 3264 - 16 MP
Sensor type: CMOS
Image stabilizer: None

Fujifilm X-E2

APS-C digital mirrorless camera

Announced: Oct 2013
Mount: Fujifilm X
Format: 23.6 × 15.6mm - 1.53x
Resolution: 4896 × 3264 - 16 MP
Sensor type: X-Trans CMOS II
Image stabilizer: None

Fujifilm X-T1

APS-C digital mirrorless camera

Announced: Jan 2014
Mount: Fujifilm X
Format: 23.6 × 15.6mm - 1.53x
Resolution: 4896 × 3264 - 16 MP
Sensor type: X-Trans CMOS II
Image stabilizer: None

Fujifilm X-A2

APS-C digital mirrorless camera

Announced: Jan 2015
Mount: Fujifilm X
Format: 23.6 × 15.6mm - 1.53x
Resolution: 4896 × 3264 - 16 MP
Sensor type: CMOS
Image stabilizer: None

Fujifilm X-T10

APS-C digital mirrorless camera

Announced: May 2015
Mount: Fujifilm X
Format: 23.6 × 15.6mm - 1.53x
Resolution: 4896 × 3264 - 16 MP
Sensor type: X-Trans CMOS II
Image stabilizer: None

Fujifilm X-E2S

APS-C digital mirrorless camera

Announced: Jan 2016
Mount: Fujifilm X
Format: 23.6 × 15.6mm - 1.53x
Resolution: 4896 × 3264 - 16 MP
Sensor type: X-Trans CMOS II
Image stabilizer: None

Fujifilm X-Pro2

APS-C digital mirrorless camera

Announced: Jan 2016
Mount: Fujifilm X
Format: 23.6 × 15.6mm - 1.53x
Resolution: 6000 × 4000 - 24 MP
Sensor type: X-Trans CMOS III
Image stabilizer: None

Fujifilm X-T2

APS-C digital mirrorless camera

Announced: Jul 2016
Mount: Fujifilm X
Format: 23.6 × 15.6mm - 1.53x
Resolution: 6000 × 4000 - 24 MP
Sensor type: X-Trans CMOS III
Image stabilizer: None

Fujifilm X-A3

APS-C digital mirrorless camera

Announced: Aug 2016
Mount: Fujifilm X
Format: 23.5 × 15.7mm - 1.53x
Resolution: 6000 × 4000 - 24 MP
Sensor type: CMOS
Image stabilizer: None

Fujifilm X-A10

APS-C digital mirrorless camera

Announced: Dec 2016
Mount: Fujifilm X
Format: 23.6 × 15.6mm - 1.53x
Resolution: 4896 × 3264 - 16 MP
Sensor type: CMOS
Image stabilizer: None

Fujifilm X-T20

APS-C digital mirrorless camera

Announced: Jan 2017
Mount: Fujifilm X
Format: 23.6 × 15.6mm - 1.53x
Resolution: 6000 × 4000 - 24 MP
Sensor type: X-Trans CMOS III
Image stabilizer: None

Fujifilm X-E3

APS-C digital mirrorless camera

Announced: Sep 2017
Mount: Fujifilm X
Format: 23.5 × 15.6mm - 1.53x
Resolution: 6000 × 4000 - 24 MP
Sensor type: X-Trans CMOS III
Image stabilizer: None

Fujifilm X-A20

APS-C digital mirrorless camera

Announced: Jan 2018
Mount: Fujifilm X
Format: 23.6 × 15.6mm - 1.53x
Resolution: 4896 × 3264 - 16 MP
Sensor type: CMOS
Image stabilizer: None

Fujifilm X-A5

APS-C digital mirrorless camera

Announced: Jan 2018
Mount: Fujifilm X
Format: 23.5 × 15.7mm - 1.53x
Resolution: 6000 × 4000 - 24 MP
Sensor type: CMOS
Image stabilizer: None

Fujifilm X-H1

APS-C digital mirrorless camera

Announced: Feb 2018
Mount: Fujifilm X
Format: 23.5 × 15.6mm - 1.53x
Resolution: 6000 × 4000 - 24 MP
Sensor type: X-Trans CMOS III
Image stabilizer: Yes

Fujifilm X-T100

APS-C digital mirrorless camera

Announced: May 2018
Mount: Fujifilm X
Format: 23.5 × 15.7mm - 1.53x
Resolution: 6000 × 4000 - 24 MP
Sensor type: CMOS
Image stabilizer: None

Fujifilm X-T3

APS-C digital mirrorless camera

Announced: Sep 2018
Mount: Fujifilm X
Format: 23.5 × 15.6mm - 1.53x
Resolution: 6240 × 4160 - 26 MP
Sensor type: X-Trans CMOS IV
Image stabilizer: None

Fujifilm X-T30

APS-C digital mirrorless camera

Announced: Feb 2019
Mount: Fujifilm X
Format: 23.5 × 15.6mm - 1.53x
Resolution: 6240 × 4160 - 26 MP
Sensor type: X-Trans CMOS IV
Image stabilizer: None

Fujifilm X-A7

APS-C digital mirrorless camera

Announced: Sep 2019
Mount: Fujifilm X
Format: 23.5 × 15.7mm - 1.53x
Resolution: 6000 × 4000 - 24 MP
Sensor type: CMOS
Image stabilizer: None

Fujifilm X-Pro3

APS-C digital mirrorless camera

Announced: Oct 2019
Mount: Fujifilm X
Format: 23.5 × 15.6mm - 1.53x
Resolution: 6240 × 4160 - 26 MP
Sensor type: X-Trans CMOS IV
Image stabilizer: None

Fujifilm X-T200

APS-C digital mirrorless camera

Announced: Jan 2020
Mount: Fujifilm X
Format: 23.5 × 15.7mm - 1.53x
Resolution: 6000 × 4000 - 24 MP
Sensor type: CMOS
Image stabilizer: None

Fujifilm X-T4

APS-C digital mirrorless camera

Announced: Feb 2020
Mount: Fujifilm X
Format: 23.5 × 15.6mm - 1.53x
Resolution: 6240 × 4160 - 26 MP
Sensor type: X-Trans CMOS IV
Image stabilizer: Yes

Fujifilm X-S10

APS-C digital mirrorless camera

Announced: Oct 2020
Mount: Fujifilm X
Format: 23.5 × 15.6mm - 1.53x
Resolution: 6240 × 4160 - 26 MP
Sensor type: X-Trans CMOS IV
Image stabilizer: Yes

Designed for

APS-C digital mirrorless cameras with Fujifilm X mount (26):

Fujifilm X-Pro1 (2012) • Fujifilm X-E1 (2012) • Fujifilm X-M1 (2013) • Fujifilm X-A1 (2013) • Fujifilm X-E2 (2013) • Fujifilm X-T1 (2014) • Fujifilm X-A2 (2015) • Fujifilm X-T10 (2015) • Fujifilm X-E2S (2016) • Fujifilm X-Pro2 (2016) • Fujifilm X-T2 (2016) • Fujifilm X-A3 (2016) • Fujifilm X-A10 (2016) • Fujifilm X-T20 (2017) • Fujifilm X-E3 (2017) • Fujifilm X-A20 (2018) • Fujifilm X-A5 (2018) • Fujifilm X-H1 (2018) • Fujifilm X-T100 (2018) • Fujifilm X-T3 (2018) • Fujifilm X-T30 (2019) • Fujifilm X-A7 (2019) • Fujifilm X-Pro3 (2019) • Fujifilm X-T200 (2020) • Fujifilm X-T4 (2020) • Fujifilm X-S10 (2020)

Specification

Announced: October 2020
Production status: In production
Maximum format: APS-C
Mount: Fujifilm X
Optical design
Diagonal angle of view: 109.8°-61.3° (Fujifilm X APS-C)
Lens construction: 14 elements - 10 groups
4 ASPH, 4 ED
Anti-reflection coating: Multi-layer
Diaphragm mechanism
Number of blades: 7
Zooming
Zooming method: Rotary
Zoom type: Internal zooming
Focusing
Focusing method: Internal focusing (IF)
Closest focusing distance: 0.5m
0.24m [Macro]
Maximum magnification ratio: 1:6.25 @ 24mm at the closest focusing distance
Focusing modes: Autofocus, manual focus
Type of autofocus motor: Stepping motor
Focus mode selector: None
Manual focus override in autofocus mode: Determined by camera
Image stabilizer
Optical Image Stabilizer (OIS): Yes
Stabilizer features: Determined by camera
Stabilizer efficiency: up to 3.5 stops
Physical characteristics
Weight: 385g
Maximum diameter x Length: Ø77.6×87mm
Weather sealing: Dust-proof and water-resistant barrel
Fluorine coating: None
Accessories
Filters: Screw-in 72mm
Lens hood: Bayonet-type (petal-shaped)

Manufacturer description #1

TOKYO, October 15, 2020 — FUJIFILM Corporation (President: Kenji Sukeno) is pleased to announce the launch of the ultra-wide angle zoom lens “FUJINON Lens XF10-24mmF4 R OIS WR” (XF10-24mmF4 R OIS WR) in late November 2020. The new lens joins the “XF Lens” lineup of interchangeable lenses for the X Series of mirrorless digital cameras, known for their compact and lightweight body and superior image quality based on the company’s proprietary color reproduction technology.

This is a compact lens that inherits the exceptional optical performance of the existing “FUJINON Lens XF10-24mmF4 R OIS” (the previous model) while newly adopting a weather-resistant structure. In addition, optical image stabilization and operability have been improved over the previous model for enhanced functionality and utility. It produces high-quality images in a wide range of shooting situations including landscape photography and snapshots.

The XF10-24mmF4 R OIS WR covers focal lengths from the ultra-wide angle 10mm to wide angle 24mm (equivalent to 15mm – 36mm in the 35mm format). It is a versatile lens that caters to a wide variety of shooting scenes, with the ultra-wide angle side for dynamic expanses of sweeping landscape with exaggerated perspective, and the longer end of up to 24mm for snapshots and portrait photography. The lens inherits the popular previous model’s maximum aperture of F4.0 (across the entire zoom range) and advanced image-resolving performance, while adopting a weather-resistant structure to achieve dust- and moisture-resistance and ability to operate at temperatures of down to -10℃. Furthermore, the new lens offers 3.5-stops of image stabilization performance, a whole one-stop improvement over the previous model. Using advanced mechanical technology, it is 25 grams lighter than the previous model, making it a powerful tool for hand-held shooting. Its advanced utility is also backed by operability enhancements, including the introduction of the Auto-position lock on the aperture ring.

1.Product features

(1) Superior optical performance

  • The new lens consists of 14 lens elements in 10 groups, including four aspherical elements and four ED elements. The design effectively controls spherical aberration and chromatic aberration, achieving edge-to-edge sharpness from the center to corners.
  • The lens offers the maximum aperture of F4.0 across its zoom range from ultra-wide angle 10mm to wide angle 24mm (equivalent to 15mm – 36mm in the 35mm format). The constant aperture eliminates the need to adjust exposure settings at different angles of view, adding comfort to the shooting experience.
  • With the minimum working distance of just 24cm, the lens is also suitable for macro photography. The lens can close in on a subject while capturing the background at the same time to create dynamic images that take maximum advantage of ultra-wide angle focal lengths.

(2) Highly robust design

  • The lens is dust- and moisture-resistant, and it operates at temperatures of down to -10℃. Users can continue shooting even in light rain or in dusty outdoor conditions.

(3) Enhanced optical image stabilization combined with compact and lightweight design to assist hand-held shooting

  • The use of a high-performance gyro sensor produces 3.5-stop image stabilization, which is improved by one-stop compared to the previous model. The combination of this lens and the mirrorless digital camera “FUJIFILM X-T4,” which has in-body image stabilization, delivers up to 6.5 stops of five-axial image stabilization performance. This produces high-quality images even in situations prone to camera shakes in low light conditions, e.g. indoors or evening landscape.
  • Advanced mechanical design technology has been applied to make the lens 25 grams lighter than the previous model. The focus ring and the zoom ring are also made smaller so that the lens fits comfortably in the hand while also sporting a stylish look, assisting hand-held shooting.

(4) Enhanced operability for ease of use

  • This is the first XF lens with Auto-position lock, a popular feature of interchangeable lenses for Fujifilm’s GFX Series of digital cameras. It locks the aperture ring in place while taking photos to prevent unnecessary movements.
  • This lens uses a new aperture ring with F-stop scale, so that users can visually check and adjust the F-stop value with ease.

(5) Fast and quiet AF

  • The lens uses the Inner Focus system, which drives compact and lightweight focusing elements with a linear motor for fast and quiet AF. The lens also supports digital camera’s Face / Eye AF function to become a powerful tool in portrait photography, capturing a unique moment in the subject’s facial expressions.

Manufacturer description #2

With a 35mm equivalent focal range of 15-36mm, XF10-24mmF4 R OIS WR is a compact wide-angle zoom that gives you access to all the classic 35mm wide-angle focal lengths in one lens. Regardless of which one you choose, this lens is sure to help you tap into what makes wide-angle photography truly joyful and enjoyable.

Engineered to have precise, responsive autofocus, creating images with XF10-24mmF4 R OIS WR becomes instinctive, near-silent, and accurate. Lightweight focusing elements snap into place with the help of a high-precision motor, easily keeping subjects pin-sharp and reliably holding focus on them, even if they are moving within the frame. Simply create images as you see them and have the freedom to find the story in any moment.

Lens breathing is a distracting phenomenon that can alter the composition of your images and videos while the lens is being focused. To minimize this effect, the focusing lens inside XF10-24mmF4 R OIS WR has been positioned close to the image sensor, away from the aperture, and paired with an ED aspherical lens. This results in uniform image quality from the minimum focusing distance to infinity, further removing distractions from your creative process.

Explore new places and feel free to forget your tripod, creating from new angles and framing exciting compositions, even after the sun goes down. Added stability comes to XF10-24mmF4 R OIS WR in the form of a new, sophisticated gyro sensor that improves Optical Image Stabilization (OIS) from its previous iteration by one whole stop. This brings vibration reduction performance up to 3.5 stops, which can be further extended to 6.5 stops when it is paired with a current X Series camera equipped with in-body image stabilization (IBIS), like FUJIFILM X-T4. Regardless of the camera it is used with, one thing is certain, steady, handheld images are on the horizon.

Aside from weather-resistance, which primarily protects XF10-24mmF4 R OIS WR against dust and moisture, several other improvements have been brought to the newest iteration of this lens. For example, an A-position lock has been added to the aperture ring to prevent unexpected changes to the lens’s aperture settings. A new aperture scale has also been added to the aperture ring to allow for aperture settings to be checked without the need for on-screen displays. Last, the width of both the aperture and focus rings have been reduced by 1mm, shaving 25g (0.9 oz) off the total weight of the lens when compared to the previous version. These improvements result in a lens that is practical, portable, and durable, which means it’s simply reliable when those moments matter most.

Editor's opinion

Optically the same as the non-WR version. The manufacturer announcement mentions a linear motor ("for fast and quiet AF"), however this must be a typo, because the lens lacks the LM acronym in its name. The closest focusing distance is indicated as 0.24m by the manufacturer, however this is only true for the macro mode. In normal mode, the closest focusing distance is 0.5m (the same as for the non-WR version).

Typical application

landscapes, interiors, buildings, cityscapes, travel

Alternatives (AF, 8-27mm)

Recommendations

  • If you plan to use a wide-angle zoom lens without a tripod and often in low light conditions, you will have to use relatively slow shutter speeds and/or high ISO settings, which in some cases may affect image sharpness. To avoid this, consider acquiring a fast wide-angle zoom lens.

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Note

Among autofocus lenses designed for 35mm full-frame mirrorless cameras only. Speed of standard and telephoto lenses is taken into account.

Pancake lens

Pancake lenses get their name due to the thin and flat size. The other distinctive features are fixed focal length and light-weight barrel. First pancake lenses appeared in the 1960s and were standard prime lenses based on the famous Tessar design – a brilliantly simple design which was developed by Paul Rudolph in 1902, patented by Zeiss company and provided a good optical performance. With the improvement of optical technologies in the 1970s the optical design of pancake lenses became more complicated and the latest generation has overcome the limitations of traditional designs. As a result, pancake lenses are now also available in wide-angle and short-telephoto variations. Due to the increasing demand for SLR and mirrorless cameras with a compact form factor, pancake lenses are experiencing a second wave of popularity while having reasonable prices, which makes them accessible to a wide range of photographers. Such lenses are especially useful for those who enjoy travel photography.

Travellers' choice

Aperture

The aperture stop is an important element in most optical designs. Its most obvious feature is that it limits the amount of light that can reach the image/film plane. Typically, a fast shutter will require a larger aperture to ensure sufficient light exposure, and a slow shutter will require a smaller aperture to avoid excessive exposure.

A device called a diaphragm usually serves as the aperture stop, and controls the aperture. The diaphragm functions much like the iris of the eye – it controls the effective diameter of the lens opening. Reducing the aperture size increases the depth of field, which describes the extent to which subject matter lying closer than or farther from the actual plane of focus appears to be in focus. In general, the smaller the aperture (the larger the number), the greater the distance from the plane of focus the subject matter may be while still appearing in focus.

The lens aperture is usually specified as an f-number, the ratio of focal length to effective aperture diameter. A lens typically has a set of marked "f-stops" that the f-number can be set to. A lower f-number denotes a greater aperture opening which allows more light to reach the film or image sensor.

The specifications for a given lens typically include the maximum and minimum aperture sizes, for example, f/1.4–f/22. In this case f/1.4 is the maximum aperture (the widest opening), and f/22 is the minimum aperture (the smallest opening). The maximum aperture opening tends to be of most interest, and is always included when describing a lens. This value is also known as the lens "speed", as it affects the exposure time. Lenses with apertures opening f/2.8 or wider are referred to as "fast" lenses. Zoom lenses typically have a maximum relative aperture (minimum f-number) of f/2.8 to f/6.3 through their range. High-end lenses will have a constant aperture, such as f/2.8 or f/4, which means that the relative aperture will stay the same throughout the zoom range. A more typical consumer zoom will have a variable maximum relative aperture, since it is harder and more expensive to keep the maximum relative aperture proportional to focal length at long focal lengths; f/3.5 to f/5.6 is an example of a common variable aperture range in a consumer zoom lens.

Autofocus motor

Micromotors and built-in motors of Nikon, Pentax and Sony digital SLR cameras provide moderately noisy and acceptably fast autofocus.

With ultrasonic, linear or stepping motor it is possible to achieve very fast and virtually silent autofocus. Moreover, the use of linear or stepping motor ensures smooth continuous focusing which makes lenses with such types of motors ideal for video recording.

The accuracy of autofocus does not depend on type of used autofocus motor but depends on focusing method (contrast or phase detection), autofocus algorithms, lighting conditions and other factors.

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.

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.

Focusing method

Photographic lenses carry out focusing using one of the following five methods:

Methods of internal and rear focusing have the following advantages:

Electromagnetic diaphragm control system

Provides highly accurate diaphragm control and stable auto exposure performance during continuous shooting.

Convex protruding front element

The convex front element protrudes from the lens barrel, making it impossible to use filters.

The "Holy Trinity" of lenses

The "Holy Trinity" of lenses refers to a three-lens set that covers a focal length range from the ultra-wide focal length of 14-16mm all the way long to the telephoto focal length of 200mm. The set typically consists of a 16-35mm ultra-wide angle zoom lens, a 24-70mm standard zoom lens and a 70-200mm telephoto zoom lens and usually represents the best constant-aperture zoom lenses in a manufacturer's lineup. The set is designed to cover almost every genre of photography, be it landscapes, architecture, portraits, weddings, sports, travel or even wildlife (with teleconverter). However, it is also expensive, large and heavy.

No focus mode selector

You have to set the automatic or manual focus mode from the camera.

Screw-in lens hood

Fastens to the front thread of the lens barrel.

Slip-on lens hood

Attaches to the lens barrel behind the front rim. A knurled screw tightens a retaining ring, holding the hood firmly to the lens.

Bayonet-type lens hood

Attaches to the bayonet fitting on the front of the lens barrel and locks in place with a twist. After usage, the lens hood can be mounted in reverse for transportation or storage.

Snap-on lens hood

Attaches onto the front of the lens with a spring-type retainer ring. This type of lens hoods is the fastest to attach. After usage, the lens hood can be mounted in reverse for transportation or storage.

Filter access window

The lens hood features a slide-out window which enables rotation of polarizing filter without removing the lens hood.

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 and fluorite elements

Low dispersion elements (AD, ED, LD, HLD, SD, UD etc) and fluorite elements minimize chromatic aberrations and ensure excellent sharpness and contrast even at fully open aperture.

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 (BR Optics) material placed between convex and concave elements made from traditional optical glass provides more efficient correction of lateral chromatic aberrations in comparison with fluorite, UD and even Super UD elements.

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 (XR, UXR, HID, HR, HRI 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.

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.

Efficiency of Image Stabilizer

The efficiency of image stabilizer is measured in stops and each stop corresponds to a two-times increase of shutter speed. For example, if you are shooting at focal length of 80mm and it is known that the efficiency of image stabilizer is 3 stops, it means that during handheld shooting at such focal length you can use shutter speed of 1/10 second which is exactly 23 times longer than the shutter speed 1/80 second needed to obtain sharp image in sufficient lighting conditions.

Zooming method

The rotary zooming method means that the change of the focal length is achieved by turning the zoom ring and the manual focusing - by turning the separate focusing ring.

The push/pull zooming method means that the change of focal length and the manual focusing is achieved by one and the same ring. The change of focal length happens when the photographer moves the ring towards the mount or backwards and the rotation of the ring leads to change of focus.

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.

Power Zoom

The lens features electronically driven zoom mechanism. It provides smoother, more natural zoom movements than you could accomplish by hand.

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.

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.

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

This website calculates angles of view of lenses 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 photographic camera body and a lens. It is confined to cameras where the body allows interchangeable lenses, most usually the rangefinder and SLR cameras.

A lens mount may be a screw-threaded type, a bayonet-type, or a breech-lock (friction lock) type. Modern still camera lens mounts are of the bayonet type, because the bayonet mechanism precisely aligns mechanical and electrical features between lens and body. Screw-threaded mounts are fragile and do not align the lens in a reliable rotational position.

Lens mounts of competing manufacturers (Canon, Nikon, Pentax, Sony etc.) are always incompatible. In addition to the mechanical and electrical interface variations, the flange focal distance from the lens mount to the film or sensor can also be different. These incompatibilities are probably due to the desire of manufacturers to lock in consumers to their brand.

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. 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". A lens is not considered to be "true" macro unless it can achieve at least life-size magnification.

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.

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 and/or rear lens elements over multi-coatings.

Floating element system

Provides correction of aberrations and ensures constantly high image quality at the entire range of focusing distances from infinity down to the closest focusing distance. It is particularly effective for the correction of field curvature that tends to occur with large-aperture, wide-angle lenses when shooting at close ranges.

Non-retrofocus lens

The lens was designed for use with 35mm film SLR cameras with the mirror locked in the up position. The lens extended into the SLR's mirror box when mounted. Mirror lock-up must be activated prior to mounting the lens; otherwise its rearmost element would be in the way as the mirror flipped up and down during exposure. A separate optical viewfinder had to be mounted on the accessory shoe to confirm angle of view, because when the mirror is in the up and locked position, the subject is no longer visible through the viewfinder.

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).

Weather sealing

Weather sealed lenses contain 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.

Diaphragm type

SLR cameras require stopping down to the chosen aperture immediately before exposure, in order to permit viewing and focusing at full aperture up to the moment the shutter is released.

Historically, there are four different types of diaphragm:

Manual – the diaphragm must be stopped down manually by rotating the detent aperture ring,

Pre-set – 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 – 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 – the actuating lever in the camera, operated by the shutter release, closes the diaphragm down during the shutter operation. On completion of the exposure, the diaphragm re-opens to its maximum value.

Anti-reflection coating

Consists of special ultra-thin films evaporated on the lens surfaces. The result is a noticeable reduction in the amount of light reflected from the lens elements and thus less contrast-degrading flare. Also, light transmission is increased, allowing full use to be made of lens speed.

Hybrid IS

The image stabilizer has Hybrid IS technology which corrects not only angle but also shift camera shake, which is more pronounced in close-range shooting when a camera moves parallel to the imaging scene. Hybrid IS dramatically enhances the effects of image stabilization during shooting, including macro shooting, which had proven difficult for conventional image stabilization technologies.

Dynamic IS

The image stabilizer has Dynamic IS technology which especially effective when shooting while walking because it compensates strong camera shake. Dynamic IS activates automatically when the camera is set to movie shooting.

Mode 1

Corrects vertical and horizontal camera shake. Mainly effective for shooting still subjects.

Mode 2

Corrects vertical camera shake during following shots in a horizontal direction. Corrects horizontal camera shake during following shots in a vertical direction.

Mode 2

Corrects vertical camera shake during following shots in a horizontal direction.

Mode 2 (Intelligent OS)

The lens incorporates Intelligent OS with algorithm capable of panning in all directions. In Mode 2, the movements of subjects can be captured with panning effects even when the camera is moved horizontally, vertically, or diagonally — regardless of the position of the lens.

Mode 3

Corrects camera shake only during exposure. During panning shots, corrects camera shake during exposure only in one direction the same as Mode 2. Effective for following fast and irregulary moving subjects.

Panning Detection

The image stabilizer automatically detects panning and then corrects camera shake only in one direction

Tripod Detection

It is often thought that image blur caused by camera shake can be prevented by using a tripod. Actually, however, even using a tripod may result in image blur because of tripod vibration caused by mirror or shutter movement at the time of exposure. The image stabilizer automatically differentiates the frequency of the vibration from that of camera shake, and changes algorithm to correct image blur caused by slight tripod vibration.

VR NORMAL

Corrects vertical and horizontal camera shake. Automatically detects panning and then corrects camera shake only in one direction.

VR ACTIVE

Corrects vertical and horizontal camera shake when shooting from a moving vehicle, or some other unstable position. Panning is not detected.

VR SPORT

Allows a continuous shooting frame rate and release time lag similar to those that are possible when image stabilizer is turned off. Automatically detects panning and then corrects camera shake only in one direction.

VR TRIPOD

It is often thought that image blur caused by camera shake can be prevented by using a tripod. Actually, however, even using a tripod may result in image blur because of tripod vibration caused by mirror or shutter movement at the time of exposure. The image stabilizer automatically differentiates the frequency of the vibration from that of camera shake, and changes algorithm to correct image blur caused by slight tripod vibration.