Additional Information on
Nikkor lenses @ 45mm


Nikon (Nippon Kogaku) GN AUTO Nikkor 1:2.8 f=45mm "pancake" standard lens

There are only two interchangeable Nikkor lenses that were marked at 45mm focal length. The first was developed and introduced in 1969 called GN-Nikkor ("GN" Stands for Guide number). The GN lens can still be considered as a normal standard lens. As the name suggested, it was developed especially for flash photography as back in those days, automatic flash units weren't available yet and so Nikon developed a solution which actually make use of the lens to couple and provide photographer with an easy calculation for correct flash exposure based on guide number for different distance focused when using the lens. The guide number of older flash bulb being used was simply set on the lens scale and locked in. When it focuses, the lens will also automatically set the appropriate aperture for correct flash exposure. Nikon has also developed a special lens hood for this lens (unusual that lens data was also printed onto the lens hood, HN-4). Besides, it is probably the only Nikkor lens that focuses the other way to its infinity. As electronic flash was soon emerge and provided a wider scope in its application with so many other lenses, this lens with it primary fixed focal length soon find its way out of favor However, as this ultra-flat Nikkor lens is truly one original conceptual optic pioneered by Nikon and it is now very much favored by many collectors. There are two versions, both are non-Ai lenses, most are titled with Nippon Kogaku but later versions just replaced that with the name, Nikon. The lens has a very simple construction of a 4 elements in 3 group design. Focuses close to 80cm (2.6ft.) but as its main purpose as a lens for flash photography, the minimum aperture has extended down to f/32. It weighs only 150g and measuring only 31mm long. NOTE:- Some later versions may also bear a "C" which signifies the use of improved lens coating onto the lens.

MORE INFO and its Technical Specification on the early versions of GN-Nikkor in MIR. As a matter of a guide; early version may bear serial numbers from 710101 to 746389 (up to 1974); those may have been treated with NIC coating could have been bear with serial number from 760001.

New and lold compared Nikon  Manual Focus Nikkor 45mm f/2.8P Standard Lens with GN-Nikkor 45mm f/2.8 Thin dimension of a Nikon Manual Focus Nikkor 45mm f/2.8P Standard Lens
Nikkor 45mm f/2.8P standard lens

on the 02.2001 at PMA show, Orlando, Florida Nikon did sprung some surprises for the photo community by introducing another all metallic silvery 45mm standard lens again. The lens was followed by a black version in 18.09.2001 which supposedly for matching the colour of the black version of the hybrid (auto and mechanical) Nikon FM3A.

GN-Nikkor was originally only in non-AI, but later spare-AI-ring could be mounted (as in picture). There are 2 versions of GN-Nikkor (pancake-lens) 1. GN-Nikkor, 2. GN-Nikkor.C = both non-AI.

Nikon said "....The lens is targeted at advanced amateur-level photographers looking for a compact manual-focus lens that works well with manual-focus cameras like the Nikon FM3A SLR and was developed in response to popular demand for a black lens to match Nikon's black-bodied camera" in their press release. The MANUAL FOCUS Nikkor lens has removed the GN feature found on the older lens type introduced some 30 years ago with the GN-Nikkor. Replacing the missing feature was the incorporation of a chipset inside the lens where the "P" stands for which permits the tiny pancake size lens to act as the old MF-Nikkor 500mm f/4.0sP IF-ED super telephoto, relaying essential data from lens to camera for all the exposure and metering modes when with any of modern Nikon SLRs (including most Nikon AF and digital SLR cameras). Although I don't intend to compare it with the older GN-Nikkor (other than the focal length and the optical composition of 4 elements in 3 group design that both share); but rather, I would termed it as a separate lens type all together because for the last 30 years, things have changed a lot. The Nikkor 45mm f/2.8 P employs with a classic Tessar-type optical design which has resulted for its comparatively compact, thin dimension. The late birth of this lens has made it enjoyed many benefits though, for an example, Nikon Super Integrated Coating was treated, and it has a rounded diaphragm opening, which makes out-of-focus objects appear more natural. With the built-in CPU, the lens is compatible with all exposure modes of Nikon SLRs currently on the market, including the Nikon F6, Nikon F5, F100, F80, F65 and of course, the classic FM3A cameras where it was designed to compliment with. As most mentioned models herein have been discontinued but what about the newer models or Nikon Digital SLRs ? With a little restriction on choices of exposure and metering modes (simply locked your aperture to f/22), they should work fine as it is an Ai-S native lens - with the EXCEPTION for those Nikon SLRs which treats all those Manual Focus lenses like a non-compatible optic...

Birds, swan and evening... by Jeffrey Moreau, UK.
You have everything in this lovely photo - both for this 45mm f/2.8P as well as features offered by a Nikon FM3A and it takes a creative eye and skill to utilize them.

Credit: Image courtesy of Jeff M, UK, who prefers to stay anonymous. Image copyright © 2006. All rights reserved. Please respect the visual property of the contributing photographer.

The lens has some familiar, traditional Nikon manual focus Nikkor lens features of the old feel, the depth of field scales are colored with infra index as a red dot; the aperture ring is very well presented with a positive grip; but the manual focusing ring can be a disaster because it was so narrow. However, just when I thought Nikon has forgotten how their old Nikkor lenses looks like, this lens serves as a optical piece to remind you they still remembered It may look a little odd when mounted onto a sizable Nikon SLR but for those who may never experience how a GN-Nikkor feels like, this lens also serves to provide you a taste with the old days. Lastly, Nikon did published a series of charts which suggested the use of singular or in combination with many older system accessories where you can explore in such possibilities for your photography. Anymore ? it was priced rather expensive, just like a collector set.

Technical Highlights

* Ultra-compact, 17mm thin and 120g in weight - the lightest and most compact modern Nikkor lens todate.
* Compatible with all exposure modes of CPU-controlled Nikon SLRs
* Treated with Nikon Super Integrated Coating which claimed by Nikon offers superior color reproduction, while minimizing ghosting and flare

* Incorporating a 7 blades, rounded diaphragm which resulted in out-of-focus elements appear more natural
* Provided with a front and rear caps and lens hood (black/Silvery color)
* Although feels light in its weight but it has a rather high built quality
* Dedicated NC filter (black/Silvery color)
* Filter attachment does not rotate while focusing

Credit: Image of this comparison shot of a Nikkor 45mm and 50mm AF f/1.8 courtesy of 3stones from Texas, whose online PORTFOLIO can be accessed at PBase. Image copyright © 2006.

Nikon FM2N with Manual Focus Nikkor 45mm f/2.8P Standard Lens Nikon  Manual Focus Nikkor 45mm f/2.8P Standard Lens without lens hood HN-35

Nikon  Manual Focus Nikkor 45mm f/2.8P Standard Lens Side view of Nikon  Manual Focus Nikkor 45mm f/2.8P Standard Lens Front view with lens element for Manual Focus Nikkor 45mm f/2.8P Standard Lens

silvery lens cap for  Manual Focus Nikkor 45mm f/2.8P Standard Lens lens hood HN-35 mounted Manual Focus Nikkor 45mm f/2.8P Standard Lens Rear lens mount for  Manual Focus Nikkor 45mm f/2.8P Standard Lens silvery lens hood HN-35 for  Manual Focus Nikkor 45mm f/2.8P Standard Lens Side viewManual Focus Nikkor 45mm f/2.8P Standard Lens
Nikon FM2N with  Manual Focus Nikkor 45mm f/2.8P Standard Lens Nikon FM2N with  Manual Focus Nikkor 45mm f/2.8P Standard Lens filter removed Nikon FM2N with  Manual Focus Nikkor 45mm f/2.8P Standard Lens with dedicated filter

Technical Specifications for MF-Nikkor 45mm f/2.8P Standard Lens

Focal length: 45mm
Lens Type:- Standard lens with built-in CPU, Ai-S
Maximum/Minimum aperture: f/2.8 / f/22
Optical construction: 4 elements in 3 groups
Depth of Field Scales:- f/22 (orange); f/16 (blue) and f/8.0 (yellow)
Infra Index: provided by a red dot.
Picture angle: 50°
Entire setup of the MF-Nikkor 45mm f/2.8P Standard Lens by MC Lau
Focusing Range: 0.45m (18") to infinity
Max. reproduction ratio: 1/7.6
Aperture scale: f/2.8 to f/22
Attachment size: 52mm
Dimensions: Approx. 61.5mm (2.57") dia. x 17mm (0.7")
Weight: Approx. 120g (4.2oz)

System accessories (supplied)
: HB-35 lens hood; NC protective filter, matching colored lens (front and rear) caps.

Depth of Field Chart for Manual Focus Nikkor 45mm f/2.8P Standard Lens

Photographic range with Nikon close-up accesssories for Manual Focus Nikkor 45mm f/2.8P Standard Lens

Depth of Field Chart for Manual Focus Nikkor 45mm f/2.8P Standard Lens and reproduction ratio
CLICK here for focusing screen compatibility Chart with most Nikon SLRs

Original content written by long time collector for Nikkor lenses, Nico van Dijk® <E-mail:- nikon-nl (at)>, Holland, assisted by leofoo®. Nico van Dijk's own website can be accessed via

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| Index Page | Part I | Part II | Part III | Part IIIa | Part IV | Part V | Part VI | Part VII | Part VIII | Part IX | Part X |

Part 1

Part II

Part III

Part IIIa

Part IV

Part V

Part VI

Part VII


Part IX

Part X

Intro. by Host
Non-Ai Nikkor Auto 5cm 1:2

Non-Ai Nikkor 5cm 1:1.4

Nikkor-S(C) Auto 1:1.2 f=5.5cm
Noct-Nikkor 58mm f/1.2; Nikkor 50mm f/1.2

Special featured section
on Nikkor 50-55mm f/1.2 lens group by host, Nico

Ai-Nikkor 50mm f/1.4, f/1.8

Ai-Nikkor 50mm f/2.0, Series E 50mm f/1.8s

Nikkor 50mm f/1.2, f/1.4, f/1.8 Ai-S,

AF-Nikkor 50mm f/1.4s, f/1.8s

AF-Nikkor 50mm f/1.4D, f/1.8D

Nikkor 45mm lens group

Special 50mm Editions

NOTE:- A collector's overview of all standard prime Nikkor lenses in F-mount by a passionate collector for Nikkor lenses, Mr. Nico van Dijk from Holland. Nico van Dijk's own website can be accessed via

| Message Board | for your Nikkor Optics in a shared environment
| Message Board | Specifically for Dispose or Looking for new/used Nikon/Nikkor photographic equipment

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Nikon MF RF-Nikkor lenses for Rangefinder cameras:- Main Index Page
Nikon Auto Focus Nikkor lenses:- Main Index Page
Nikon Manual Focus Nikkor lenses:-
Fisheye-Nikkor Lenses - Circular | Full Frame | Ultrawides Lenses - 13mm15mm18mm20mm | Wideangle Lenses - 24mm28mm35mm | Standard Lenses - 45mm 50mm 58mm | Telephoto Lenses - 85mm105mm135mm180mm & 200mm | Super-Telephoto Lenses - 300mm 400mm 500mm 600mm 800mm 1200mm |

Nikkor Link.jpg   Special Application lenses:
Micro-Nikkor Lenses - 50mm~55mm -60mm 85mm -105mm 200mm Micro-Zoom 70-180mm
Perspective Control (PC) - 28mm 35mm PC-Micro 85mm
Dedicated Lenses for Nikon F3AF: AF 80mm f/2.8 | AF 200mm f/3.5 EDIF
Depth of Field Control (DC): 105mm 135mm
Medical Nikkor: 120mm 200mm
Reflex-Nikkor Lenses - 500mm 1000mm 2000mm
Others: Noct Nikkor | OP-Nikkor | UV Nikkor 55mm 105mm | Focusing Units | Bellows-Nikkor 105mm 135mm
Nikon Series E Lenses: 28mm35mm50mm100mm135mm | E-Series Zoom lenses: 36~72mm75~150mm70~210mm

MF Zoom-Nikkor Lenses: 25~50mm | 28~45mm | 28~50mm | 28~85mm | 35~70mm | 36~72mm E | 35~85mm | 35~105mm | 35~135mm | 35~200mm | 43~86mm | 50~135mm | 50~300mm | 70~210mm E | 75~150mm E | 80~200mm | 85~250mm | 100~300mm | 180~600mm | 200~400mm | 200~600mm | 360~1200mm | 1200~1700mm

Tele-Converters: TC-1 | TC-2 | TC-200 | TC-201 | TC-300 | TC-301 | TC-14 | TC-14A | TC-14B | TC-14C | TC-14E | TC-16 | TC-16A | TC-20E

Recommended links to understand more technical details related to the Nikkor F-mount and production Serial Number: by: my friend, Rick Oleson by: Hansen, Lars Holst

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A Nikkor lens Resource site Co-developed with Nico van Dijk , Holland Email Nico via:-<>; assisted by leofoo, Rick Oleson

Credit: To all the good people who has contributed their own experience, resources or those who are kind enough granting us permission to use their images appeared in this site Note:certain content and images appeared in this site were either scanned from official marketing leaflets, brochures, sales manuals or publications published by Nikon over the years and/or contribution from surfers who claimed originality of their work for educational purposes. The creator of the site will not be responsible for may discrepancies arise from such dispute except rectifying them after verification."Nikon", "Nikkormat", "Nippon Kokagu KK" & "Nikkor" are registered tradename of Nikon Corporation Inc., Japan. Site made with an Apple IMac.