|AI-S||A manual focus lens with automatic maximum aperture indexing and automatic aperture control.|
|P||The lens features a built-in CPU which is used to transfer metering data from the lens to the camera.|
|Production status:||● Discontinued|
|Original name:||Nikon NIKKOR 45mm 1:2.8P|
|System:||Nikon F (1959)|
|Maximum format:||35mm full frame|
|Mount and Flange focal distance:||Nikon F [46.5mm]|
|Diagonal angle of view:||51.3°|
|Lens construction:||4 elements - 3 groups|
|Closest focusing distance:||0.45m|
|Maximum magnification ratio:||<No data>|
|Focusing modes:||Manual focus only|
|Manual focus control:||Focusing ring|
|Aperture control:||Aperture ring (Manual settings + Auto Exposure setting)|
|Number of blades:||7 (seven)|
|Maximum diameter x Length:||⌀63×17mm|
|Lens hood:||Screw-type HN-35 (dome-shaped)|
|In terms of FoV & DoF|
|Camera series [Crop factor]||Focal length||Speed||Dia. angle of view|
|Nikon D APS-C [1.53x]||68.9mm||F/4.3||34.9°|
MELVILLE, N.Y., Feb. 5 /PRNewswire/ -- Nikon, the leader in precision optics, 35mm and digital imaging technology, today introduced the AI-S Nikkor 45mm f/2.8P, a compact, manual focus lens that features a built-in CPU (Central Processing Unit) to accommodate the advanced automatic exposure features of Nikon 35mm SLR cameras. The 45mm f/2.8P lens is compatible with all exposure modes of current Nikon SLRs, including the F5, F100, N80, N65 and new FM3A. The Nikon FM3A manual focus 35mm SLR camera is Nikon's new model featuring a hybrid shutter control system enabling mechanical and electronic shutter speed control.
Featuring superior Nikkor optics, the AI-S Nikkor 45mm f/2.8P's new Tessar-type optical design allows for a comparatively compact, very short lens. Nikon's Super Integrated Coating and a rounded diaphragm opening with seven blades minimizes ghost and flare, while making out-of-focus objects appear more natural.
The AI-S Nikkor 45mm f/2.8P is offered in an elegant silver metallic finish and is supplied with a cosmetically matched lens hood, NC filter and caps and will be available in the Spring of 2001.
In July 2001, the single focal-length manual-focusing lens went on sale simultaneously with FM3A. It features a thin and lightweight design with a distance of 17 mm from the mount surface, and a weight of approx. 120 g. It is commonly called pancake lens for the external view. Due to the newly designed Tessar-type optical system (configuration of 4 elements in 3 groups) and the 7-blade circular diaphragm, it provides excellent imaging characteristics. In consideration of the proper matching to the FM3A, it was finished with a quality metallic appearance. The filter, hood, and cap were also designed specifically for this lens system, and particularly the hood was equipped with a specific function to allow installing a cap over the hood and a novel conical-dome design. A CPU was integrated in the system to allow all exposure control modes, programmed, aperture-priority, shutter-speed priority, and manual. In addition to the silver finish, the black finish system was released in November 2001 at 48,000 yen (tax not included).
A special edition compact standard lens in a silver metallic or black finish, the 45mm f/2.8P has a simple, sharp optical formula and is very easy to focus. It features a built-in CPU for information exchange (P-type Nikkor) making it compatible with all exposure modes of CPU-controlled Nikon SLRs (P-type Nikkor) as well as the FM3A and FM10. It includes the HN-35 lens hood, a soft lens pouch and a 52mm NC filter.
Pancake lenses get their name due to the thin and flat size. The other distinctive features are fixed focal length and light weight.
First pancake lenses appeared in the 1950s 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 even short telephoto variations.
Due to the increasing demand for 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.
Genres or subjects of photography (7):
Adaptation to digital SLR cameras:
In order to adapt the lens, the flange focal distance (FFD) of the lens mount must be equal to or greater than the FFD of the camera mount. This lens has the Nikon F mount with a FFD of 46.5mm. This is even shorter than the FFD of Canon EOS digital SLR cameras, which have the shortest FFD of 44mm of any modern digital SLR cameras. Therefore, this lens cannot be adapted to any digital SLR camera.
Recommended slowest shutter speed when shooting static subjects handheld:
|Nikon AI-S NIKKOR 50mm F/1.4 • ⌀52||1981 ●|
|Nikon AI-S NIKKOR 50mm F/1.2 • ⌀52||1981 ●|
|Nikon GN Auto NIKKOR[·C] 45mm F/2.8 • ⌀52 • Pancake lens||1968 ●|
|Nikon NIKKOR-S Auto 50mm F/2 • ⌀52||1959 ●|
|Nikon NIKKOR-H Auto 50mm F/2 • ⌀52||1964 ●|
|Nikon NIKKOR-H[·C] Auto 50mm F/2 • ⌀52||1967 ●|
|Nikon NIKKOR 50mm F/2 • ⌀52||1974 ●|
|Nikon AI NIKKOR 50mm F/2 • ⌀52||1977 ●|
|Nikon AI NIKKOR 50mm F/1.8 • ⌀52||1978 ●|
|Nikon Series E 50mm F/1.8 [I] • ⌀52 • Pancake lens||1979 ●|
|Nikon AI-S NIKKOR 50mm F/1.8 • ⌀52||1980 ●|
|Nikon AI-S NIKKOR 50mm F/1.8 • ⌀52||1981 ●|
|Nikon Series E 50mm F/1.8 [II] • ⌀52||1981 ●|
|Nikon AI-S NIKKOR 50mm F/1.8 • ⌀52||1985 ●|
|Nikon NIKKOR-S Auto 50mm F/1.4 • ⌀52||1962 ●|
|Nikon NIKKOR-S[·C] Auto 50mm F/1.4 • ⌀52||1966 ●|
|Nikon NIKKOR 50mm F/1.4 • ⌀52||1974 ●|
|Nikon NIKKOR 50mm F/1.4 • ⌀52||1976 ●|
|Nikon AI NIKKOR 50mm F/1.4 • ⌀52||1977 ●|
|Nikon AI NIKKOR 50mm F/1.2 • ⌀52||1978 ●|
|Nikon NIKKOR-S Auto 55mm F/1.2 • ⌀52||1965 ●|
|Nikon NIKKOR-S[·C] Auto 55mm F/1.2 • ⌀52||1967 ●|
|Nikon NIKKOR 55mm F/1.2 • ⌀52||1974 ●|
|Nikon AI NIKKOR 55mm F/1.2 • ⌀52||1977 ●|
|Nikon NIKKOR-S Auto 58mm F/1.4 • ⌀52||1959 ●|
|Nikon AI Noct-NIKKOR 58mm F/1.2 • ⌀52||1977 ●|
|Nikon AI-S Noct-NIKKOR 58mm F/1.2 • ⌀52||1981 ●|
|Cosina Voigtlander ULTRON 40mm F/2 Aspherical SL II • ⌀52 • Pancake lens||2007 ●|
|Cosina Voigtlander ULTRON 40mm F/2 Aspherical SL • ⌀52||2002 ●|
|Cosina Voigtlander ULTRON 40mm F/2 Aspherical SL II S • ⌀52||2017 ●|
|Cosina Voigtlander ULTRON 40mm F/2 Aspherical SL II N • ⌀52 • Pancake lens||2012 ●|
|Irix 45mm F/1.4 • ⌀77||2020 ●|
|Samyang 50mm F/1.4 AS UMC (Bower, ROKINON, Walimex Pro) • ⌀77||2014 ●|
|Carl Zeiss Classic Planar T* 50mm F/1.4 ZE / ZF.2 / ZK / ZS • E58||2006 ●|
|ZEISS Milvus Distagon T* 50mm F/1.4 ZE / ZF.2 • E67||2015 ●|
The AI-S line was created by Nikon in 1982 when the aperture mechanism of AI lenses was enhanced to feature automatic aperture control. This feature was to be used with cameras such as the FA, FG and F301 and allowed Program or Shutter Priority (FA only) modes to be incorporated into these cameras when used with AI-S lens. The AI-S mechanisms allows the aperture increments of an AI-S lens to be controlled more precisely by the camera than with an AI lens.
The orange-colored minimum aperture value marking, and a milled semi-circular notch in the bayonet ring distinguish AI-S lenses. The notch is designed to inform Nikon cameras that employ a mechanical automatic aperture control for different exposure modes, that lens with a linear aperture mechanism is attached.
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Cannot compare the lens to itself.
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.
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 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 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),
CF – crop-factor of a sensor,
FL – focal length of a lens.
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 – 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.
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.
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.
The minimum distance from the focal plane (film or sensor) to the subject where the lens is still able to focus.
The distance from the front edge of the lens to the subject at the maximum magnification.
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".
The diaphragm must be stopped down manually by rotating the detent aperture ring.
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.
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.
The camera automatically closes the diaphragm down during the shutter operation. On completion of the exposure, the diaphragm re-opens to its maximum value.
The aperture setting is fixed at F/2.8 on this lens, and cannot be adjusted.
For Programmed Auto or Shutter-priority Auto shooting, lock the lens aperture at its minimum value.
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.
Excluding case or pouch, caps and other detachable accessories (lens hood, close-up adapter, tripod adapter etc.).
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.
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.
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.
Lens filters are accessories that can protect lenses from dirt and damage, enhance colors, minimize glare and reflections, and add creative effects to images.
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 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.
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.