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Nikon AF-S DX Micro-Nikkor 40mm F/2.8G

Macro lens • Digital era

Sample photos

F/8
F/3.5
F/7.1

Abbreviations

AF-S The lens is equipped with Silent Wave Motor.
DX The lens is designed for Nikon APS-C digital cameras only.
MICRO Macro lens. Designed specially for shooting close-ups of small subjects but can be also used in other genres of photography, not necessarily requiring focusing at close distances.
G The lens does not have an aperture control ring and is intended for use on Nikon digital SLR cameras that allow the lens aperture to be adjusted via the camera's command dial. Relays subject-to-camera distance information to the camera, like a D-type lens.

Features highlight

APS-C
Fast
CRC
Macro 1:1
SWM
MFO
Focus limiter
Compact
Lightweight
WR mount

Specification

Production details
Announced:July 2011
Production status: In production
Production type:Mass production
Original name:Nikon AF-S Micro NIKKOR 40mm 1:2.8G DX
System: Nikon F APS-C (1999)
Optical design
Focal length:40mm
Speed:F/2.8
Maximum format:APS-C
Mount and Flange focal distance:Nikon F [46.5mm]
Diagonal angle of view:38.9° (Nikon F APS-C)
Lens construction:9 elements - 7 groups
Close Range Correction (CRC)
Diaphragm mechanism
Diaphragm control system:Mechanical
Number of blades:7
Focusing
Closest focusing distance:0.163m
Closest working distance:0.035m
Maximum magnification ratio:1:1 at the closest focusing distance
Focusing method:<No information>
Focusing modes:Autofocus, manual focus
Manual focus control:Focusing ring
Autofocus motor:Silent Wave Motor
Focus mode selector:M/A - M
Manual focus override in autofocus mode:Yes
Focusing distance range limiter:FULL;0.2-
Vibration Reduction (VR)
Built-in VR:-
Physical characteristics
Weight:235g
Maximum diameter x Length:⌀68.5×64.5mm
Weather sealing:Water-resistant mount
Fluorine coating:-
Accessories
Filters:Screw-type 52mm
Lens hood:Bayonet-type HB-61 (round)
Teleconverters:Not available

*) Source of data: Manufacturer's technical data.

Manufacturer description

July 12, 2011

Get Closer To Clarity: The New Nikon AF-S DX Micro NIKKOR 40mm f/2.8G Brings Fast Macro Ability To DX-Format Shooters

Images Packed with Stunning Detail and Amazing Sharpness Have Never Been So Near MELVILLE, N.Y. – Nikon Inc. today introduced the new lightweight and versatile AF-S DX Micro NIKKOR 40mm f/2.8G lens to provide Nikon DX-format shooters macro capabilities at an affordable price point. Ideal for intimate details or general portraiture, the new AF-S DX Micro NIKKOR 40mm f/2.8G lens has a minimum focusing distance of just 0.53 feet (6.4 inches) to allow users to capture extreme close-up photographs and High Definition (HD) video with a life-size 1:1 reproduction ratio.

"This new NIKKOR lens is an ideal accessory lens for those who are ready to explore a totally new perspective, whether it's extreme close-up detail or general still images and movies with flattering out of focus elements," said Lisa Osorio, general manager of marketing at Nikon Inc. The new Micro NIKKOR lens delivers new and added versatility to the Nikon DX-format digital SLR system and provides DX-format shooters with compact optics that deliver excellent color reproduction and stunning sharpness."

Weighing in at approximately nine ounces, the extremely compact and lightweight lens is an ideal "next" lens to complement any DX-format shooter's growing D-SLR kit. The natural focal length (60mm, FX equivalent) and large f/2.8 aperture are ideal for a wide variety of applications, whether capturing close-up details in flowers and insects or shooting flattering portraiture with a pleasing bokeh.

For fast and whisper quiet autofocus operation, the new Nikon 40mm Micro lens also features Nikon's exclusive Silent Wave Motor technology, which allows photographers to get even closer without disturbing a subject. For complete control, the AF-S DX Micro NIKKOR 40mm offers users both manual-priority autofocus (M/A) and manual focus (M) modes to quickly and easily switch focus modes on the fly. To help ensure amazing lens performance at close distances, this new lens employs Nikon's Close-Range Correction System. With this system, the lens elements are configured in a "floating" design wherein each lens group moves independently to help achieve critical focus. Additionally, Nikon's Super Integrated Coatings are applied to help reduce instances of lens flare and ghosting. The seven blade diaphragm also helps to create a more natural out of focus component.

The versatile and compact nature of the AF-S DX Micro NIKKOR 40mm f/2.8G lens combined with its affordability make it a great travel companion for any DX-format D-SLR, including the new Nikon D5100 and popular D3100.

From the editor

When focusing at infinity, the front element is deeply recessed inside the lens barrel, which eliminates the need for a lens hood. Nevertheless, Nikon offers a circular lens hood as a part of the package.

When focusing towards the closest focusing distance, the front element within a lens tube extends outside the lens barrel a bit. In case when the lens hood is mounted, it can easily cast a shadow on a subject due to a short working distance of the lens at large magnifications.

Typical application

landscapes, interiors, buildings, cityscapes, travel, macrophotography and product photography

Lenses with similar focal length

2.8 Tokina AT-X Pro Macro M35 AF 35mm F/2.8 DX ⌀521:1APS-C 2007 Compare15

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35mm full frame

43.27 24 36
  • Dimensions: 36 × 24mm
  • Aspect ratio: 3:2
  • Diagonal: 43.27mm

Travellers' choice

Note

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

One of the best short telephoto macro primes

According to lens-db.com; among lenses designed for the same maximum format and mount.

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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.

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.

Focusing distance range limiter

The lens features focusing distance range limiter which allows to choose between the following focusing distance ranges:

FULLFull range of focusing distances.
0.2m - ∞Range of focusing distances suitable for shooting distant subjects.

By setting the suitable focusing distance range, the actual autofocusing time can be shorter.

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.

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, Nikon, Pentax, Sony etc.) are always incompatible. In addition to the mechanical and electrical interface variations, the flange focal distance can also be different.

The flange focal distance (FFD) is the distance from the mechanical rear end surface of the lens mount to the focal plane.

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.

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.

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. 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.

Electromagnetic diaphragm control system

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

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 and/or rear lens elements 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.