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Nikon (Nippon Kogaku K K) Nikkor-P.C 1:2.5 f=10.5cm (105mm f/2.5)
Medium Telephoto lens for Nikon S-Mount Rangefinder cameras - Part I

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Introduction:- The 105mm (10.5cm) focal length seemingly was uniquely Nikon. One of the main reason is being, most of the other major camera brands* would prefer a standard 100mm than choosing this slightly odd focal length. Similarly, adopting a f/2.5 maximum aperture for the lens was equally odd where market often prefers a more standard form of f/2.8 aperture. The f/2.5 maximum aperture was only had been shared twice in two lenses within the entire Nikkor lens series, the first was the UW-Nikkor 35mm f/2.5 for the NIKONOS. The UW-wideangle was introduced in 1963 has remained as one of the longest serving Nikkor lens which lasted 37 years). Another Nikkor lens with a similar lens speed of f/2.5 was the Nikon RF Nikkor 1:2.5 f=18cm (180mm f/2.5) featured in another section. I wasn't sure if the timing was coincidental, as both 10.5cm f/2.5 and 18cmf/2.5 were introduced sequentially within a month towards end of 1954. Although the f/2.5 maximum aperture lens speed was not** entirely a Nikon proprietary, but when it combines with a unique focal length of 105mm focal length, it makes this Nikkor very Nikon.

LEICA Ernst Leitz Wetzlar ELMAR f=10.5cm 1:6.3 Hugo Meyer Makro-Plasmal LINK Canon 135mm f/3.5 rangefinder version -LINK Canon 135mm f/2 rangefinder version -LINK
 P. Angenieux 90mm f/2.5 ('50~'60) - LINK
* Other info:- Leica used to offer a similar focal length with Ernst Leitz Wetzlar ELMAR f=10.5cm 1:6.3 "Mountain ELMAR" telephoto lens long before Nikon did. But the slow speed ELMAR was sold during a short spell between 1932~1937; others such as Rodenstock had an old Leica screw mount version with an exact focal length of 10.5cm but its maximum aperture is a rather slow f/4.5; in comparison, Hugo Meyer's Leica screw mount version (LSM) 1:2,7/10,5cm Makro Plasmal comes very close in basic focal length/aperture spec. with the Nikkor.
Also check versions of Canon RF 100/3.5 & 100mm/2.0 versions. I wasn't sure why, the two mighty German market players (Leitz and Zeiss) were not too keen in re-introducing any equivalent focal length lenses to counter Nikon act. Probably they were the market leaders during those pre-Nikon dominance era and find it no purpose to follow path of the Japanese.

** Although the maximum aperture diaphragm (f/2.5) wasn't that popular those days; but some examples of the MF RF/SLR oldies such as the nickel Leica f: 2.5 Hektor 50mm (1931~1948), Vivitar 28mm f/2.5, M42 P. Angenieux 90mm f/2.5 ('50~'60), Pentax SMC Takumar 135mm / 200mm f/2.5 and a few 3rd party 90mm focal length Macro series by Vivitar, Tamron, Tokina etc. but RECENTLY, series of f/2.5 lenses are beginning to emerge in favor over f/2.8 by a few major camera brands. Some of these recent examples are: Leica Summarit-M 35mm/ 50mm /75mm and Summarit-M 90mm f/2.5; Canon EF 50mm f/2.5 Macro; Voigtlander Color Heliar 75m f/2.5. However, other than the few newer ones that may take time to see their sustain-ability and/or popularity, most of the earlier mentioned older lenses were not in truly regarded as time proven mass market optic that were produced in big volume (sorry folks - if I had ever offended anyone here with this statement). Other alternate references: Carl Zeiss BIOTAR 10cm 1:2, Leitz options @ 90mm.

A beautifully captured photo of the Nikkor-P 1:2.5 f=10.5cm taken by Jon Mitchell¨ª
Part One - Nikon (Nippon Kogaku K.K.) Nikkor-P 1:2.5 f=10.5cm (RF Nikkor-P 105mm f/2.5) medium telephoto lens for Nikon Bayonet S-Mount Rangefinder cameras

Year Introduced: 1954#; Discontinued: no info # Nikon indicated date in their official web site. Other sources: Nikon RF illustrated History also suggested Dec. 1953; but it was mentioned as August, 1954 (Nikon hand book).

There are a few interesting points that relate to this rangefinder version Nikkor-P 1:2.5 f=10.5cm medium telephoto lens.
There are 2 different versions available, the one first started with this focal length in 1954 has a faster lens speed of f/2.5; the second model with a slower maximum aperture of f/4.0 was introduced after the reflex Nikon F was announced in 1959. There wasn't a Bellow-Nikkor 105mm for Nikon rangefinder system for purpose of close-up, scientific and/or duplicating works as Bellow-Nikkor for rangefinder system was only offered at 135mm. Although the Nikkor lens family do has a 105mm f/4.0 Bellow-Nikkor-P with similar focal length/aperture, but it was only being introduced in 1970 and remains itself as a F-mount specific Nikkor special application lens.

Credit: Image copyright 2008 Jon Mitchell® from Australia. Image Copyright 2008. All rights reserved. You can access Jon's portfolio at Flickr for more creative visual. Please respect the visual property of the contributing photographer.

Between the two available options (f/2.5/f4.0) at 105mm focal length, most of you may only see an available options but I think that was a very careful, thoughtful planning by Nikon as each of the lens type carries with different purpose, price/budget caters for different market users as well as meeting certain business objectives. In particular, after the successful release of the Nikon S2 onwards; initial effort with timely releases of both 105/f2.5 / 180/2.5 which had a touch of originality in their design, I think Nikon was partly aimed to dispel the shadowy image of often being labeled as an oriental "copycat" from the German counterparts. This 105/2.5 was the first Nikkor lens that has started adopting a 52mm filter attachment size - which has been made as standard filter size for the next generation reflex F-mount Nikkor series. In fact, standardization of filter size has always been given a priority in lens designing by Nikon. If I can recall correctly, up to the mid '70, virtually all the fixed focal length Nikkor lenses from 20mm to 200mm share a same 52mm filter thread. This was first done with this Nikkor-P 105/2.5 during the rangefinder days. We must acknowledge this was an amazing feat, considering series of amazing fast lens speed Nikkor prime lenses such as f/1.2 (50mm, 58mm f/1.2); f/1.4 (Nikkor 35mm f/1.4, 50mm standard lenses) etc. Standardization of filter size has enabled photographer easier/cheaper to maintain/interchange same series of filter accessories among the lenses collection.

Nikon bayonet S-mount version  of the Nikkor 1:2.5 f=10.5cm (105mm f/2.5) medium telephoto lens  SIDE VIEW with various lens features and data on the lens barrel
NOTE:- A rough Guide for built-in Bright-Line Frames:-

Nikon SP: 28/35/50/85/105/135mm; S3:35/50/105mm; S4: 50/105mm; S3M: 35/50/105mm. This probably give us a clue what an important place the 105/2.5 focal length had in a Nikon system during those days.

Credit: Image copyright 2008 Jon Mitchell® from Australia. Image Copyright 2008. All rights reserved. You can access Jon's portfolio at Flickr for more creative visual. Please respect the visual property of the contributing photographer.

The 105mm lens group can be considered as quite "clean" (Unlike the 135mm lens group which have quite a few variations that often create confusion for lens collectors). Other than a basic lens version that carries with Nikon bayonet S-mount, other known 105/2.5 variations in the mount systems are:- Contax and Leica M39 screw-mount (or other possible camera brands sharing LSM). Most of the NIkkor-P 105mm f/2.5 are believed to carry a Nikkor-P.C encoding on its lens data inscription which indicates they are all coated optic in this series. The first S-series Nikon rangefinder cameras that was supplied with a built-in bright-line frame of 10.5cm was the 1957's Nikon SP which actually was introduced a few years later after 105/2.5 was released. So, to enable use of the 105/2.5 lens for Nikon cameras prior to the Nikon SP, Nikon had designed an optional Optical Finder for 10.5cm (subsequent accessory finders that followed also had included this focal length) for ease photo composting. In fact, the immensely popularity it had enjoyed had made Nikon to decide making it as a standard built-in bright-line frame (at the expense of the 135mm focal length) for all the post -SP Nikon camera models such as Nikon S3, S4 and even it was offered on the last of S-series Nikon, a odd 18 x 24 format, 72 exp. Nikon S3M.

Front view of the lens element of Nikkor-P.C 1:2.5 f=10.5cm (105mm f/2.5) Telephoto lens for rangefinder Nikon cameras

reflection of  the front lens element of Nikkor-P.C 1:2.5 f=10.5cm (105mm f/2.5) Telephoto lens for rangefinder Nikon cameras

The colorful reflection of the front / rear lens element
in the coated Nikkor-P.C 10.5cm f/2.5 telephoto lens.

I guess when the vastly improved Nikon S2 (1954) could well had boosted Nikon confidence to prepare for another strike to the German dominated market. Overall, development of cameras was in-line with the entire Nikon system where many system accessories were also being updated in all aspects. The Nikkor lens group, which forms as the nucleus of the Nikon RF system, which was long been cast by the shadow of the German optical excellence has been given special attention to revert the situation. In general, it may be acceptable by most people that Contax's Zeiss has slight edge on the optical section while Leica has a better overall built quality across their product line. This was one of the reason why many of the early Nikkor lenses were carried with a strong Zeiss flavor. Between the two lenses tele-lenses of 180/2.5 and 105/2.5 introduced in late '53, in comparison, the 105/2.5 has a more of an original idea as both focal length/maximum aperture used was not found in a similar package on both the prevailing Leitz and Zeiss lens family during that stage. NOTE:- In 1954, Leica released also had released a bayonet mount LEICA M3 (many Leitz lenses from here onwards, changed from screw mount to the bayonet mount). On the other hand, Zeiss does has an impressive 180/2.8 Olympia Sonnar where most often people like to compare the 180/2.5 Nikkor with). Anyway, when we track back to the historical trail, it was quite smart for Nikon to adopt a focal length / aperture combination which was different from the German lens breed. Although it still has a color tint of Zeiss design within but it has successfully met the objective of not being totally making replicas. I guess this probably was part of a rebranding exercise for the Japanese maker - except they probably didn't realized along the way, they had also produced an instant hit commercially as well as creating one of the classic medium range telephoto lens of all time in 35mm photography.

Optical design, diaphragm, illustration on a rangefinder version of the Nikkor-P.C 1:2.5 f=10.5cm (105mm f/2.5) telephoto lens for Nikon rangefinder cameras   NOTE:- Basing on an article by Sato, Haruo published in 1999 Nikon Club magazine. The optical design of the early Nikkor-P 1:2.5 f=10.5cm telephoto lens was a work of art by Japanese optical designer, WAKIMOTO, Zenji (1924~1996), who had also designed the original Micro-Nikkor / Ultra-Micro-Nikkor lens series. The 105/2.5 shares almost identical optical formula with the RF Nikkor 1:2 f=8.5cm telephoto lens in the same 5E/3G design.

Comparing new the and old Optical design, diaphragm, illustration on a rangefinder version of the Nikkor-P.C 1:2.5 f=10.5cm (105mm f/2.5) telephoto lens for Nikon rangefinder cameras   The same formula has been replicated to the F-mount version until another Nikon optical designer, SHIMIZU, Yoshiyuki revised the design for the version that was appeared in the early '70. The original 105/2.5 has a Gauss design following the Carl Zeiss Sonnar optical principle (5E/3G). The revised model in '70 was using slightly different German's Schneider Xenotar (5E/4G) optical formula.

CLICK HERE | for SATO, Haruo original written content.

The successful debut of the Nikkor-P.C 105mm f/2.5 commercially had also brought a significant impact to Nikon financial during that time. Other than the standard lens (Nikkor-S 1:1.4 f=5cm) and W.Nikkor 1:2.5 f=3.5cm, the 105/2.5 can easily fit within top 5 best seller in total quantity sold. The 50/1.4 which out sold the 105/2.5 almost by a fold was partly it was a companion lens for any new Nikon S-body purchase. While the 35mm was like a standard wideangle lens during those days. Whatever it is, the 105/2.5 has remained as the best selling Nikkor telephoto lens ever**. Incidentally, the 50mm f/1.4 Nikkor-S was also a 1953's produce. Together with Nikon S2 which also tops as the best selling Nikon S-model, hence, 1953 was quite a year for Nikon.

* Based on figures presented in some reading references, the Nikkor-P 1:2.0 f=8.5cm had sold almost in the same quantity with the 10.5cm Nikkor-P. However, 85/2.0 was first introduced in 1948, which is 5 years ahead of the 10.5cm Nikkor-P. **Although we don't have any official figures to refer to, it may not be a wild guess. The 105/2.5 has its entire product cycle lasted more than half a century ! So, when we combine all the updated models sold for the last 50 years, this could easily rank it to be one of the best selling fixed focal length telephoto lens ever in the history of 35mm photography too.

Various lens data, DOF scales and distance indexes on  a rangefinder ( RF ) version of he Nikkor-P.C 1:2.5 f=10.5cm (105mm f/2.5) Telephoto lens for rangefinder Nikon cameras Lens view B with smaller aperture scales  marked on a rangefinder ( RF ) version of he Nikkor-P.C 1:2.5 f=10.5cm (105mm f/2.5) Telephoto lens for rangefinder Nikon cameras
Credit: All images courtesy of Mr. Kelvin Li from his popular gokelvincameras @ Ebay Store which retails for many hard-to-find Nikon, canon, Contax oldies. Image Copyright © 2008. All rights reserved. Please respect the visual property of the contributing photographer.

Lens features/characteristic:- One way or another after the S2 was introduced, some of the Nikkor lenses seemingly had adopted a new standard appearance. I am not too sure if all these was part of a general lens updating program or simply case to case basis. Typically, the popular series of mid range telephoto group use a black paint barrel at the mid section, a combination of metallic chrome/brass for the front rim, rear lens mount as well as the lens mounting ring. The focusing, aperture control rings as well as lens barrel are usually has a standard resin-coated black paint with the rings with a thinly ridge pattern design. Another feature found on lenses during this stage are series of excellently well illustrated depth of field scales printed near the focusing Index. Similarly, with the distance scales also marked into very detailed numerals. For an example, except for f/5.6 - ALL available apertures from f/32 ~f/2.5 are literally provided ! A feat Nikon has never be able to replicate this good feature on the modern autofocus Nikkor lenses (they are either stupidly selected in aperture selection, as well as aimlessly be there just to make this up as a lens feature for marketing, what a pity..).

NOTE:- The 105/2.5 RF Nikkor has the distance scales display in FEET only. Metric scales equivalent are very rare and highly desired by collectors. However, during this stage, despite all their effort in making the lenses better. DOF scales in all the prevailing RF Nikkor lens group have not been color coded yet. This was further refined in the F-mount lenses later and all those series that followed (between '60~mid '80) were regarded as having the BEST visual references in this specific area.

An An
<<<--- Unlike many of the 13.5cm Nikkor telephoto lenses which has gone through a transitional stage of change in the political environment, which had resulted in a few variation such as "Nippon Kogaku Toyko", "MIOJ" etc.; due to relatively late debut, the Nikkor-P 105/2.5 was less congested with those marking or inscriptions, here is a version which has an "EP" mark. NOTE:- An "EP" marked item was just to differentiate mechanize / goods that sold during the post war Japan era. EP engraved items were distributed via military "duty-free" outlets or sometimes referred as PX distribution system during the period. Technically, you can refer them as the same with "MIOJ" (Made in Occupied Japan) products except EP extends longer period for the US troops in Japan after quoted "MIOJ" on products were expired.
Credit: Image courtesy of camera$@EBAY®. He also operates a popular EBAY STORE where he often lists many used RARE pieces of Nikon, Leica and other old classic photo equipment, Images are also well taken for visual confirmation for buyers - he is also one of my favorite bookmark Ebay dealer. Image copyright © 2006. All rights reserved. Please respect the visual property of the contributing photographer.

A side view of the  rangefinder version Nikkor-P.C 105mm f/2.5 with the rare, early version of the  bayonet snap on metal lens hood Nikon bayonet snap on metal lens hood (early model) for rangefinder (RF) Nikkor-P.C 105mmm f/2.5
This looks like a normal picture, EXCEPT the lens hood may suggest a way for verification. The hood shown here is a bayonet type, used on most early series. Subsequent units produced were supplied with Snap-On type. Either way, both series can be stored inversely at the front end. Please take notice the filter size is 52mm and this was the first Nikkor lens that had adopted this standard.

Personally, I enjoy the many series within the Nikon 105mm focal length lenses. I had owned many versions/ lens type which include bare basic spec MF/AF telephoto to virtually all the models in the Micro-Nikkor series and I had even used to own a Bellow unit 105/4). In fact, my second lens was a 105/2.5 Nikkor. Perhaps, the only lens that I had never used before is the UV-Nikkor 105mm f/4.0s. Except for the MF Nikkor 105mm f/2.8s where I do have some reservation on its performance near its largest aperture(s), most of the Nikkor 105 telephoto lenses delivers incredibly SHARP pictures with high contrast across all apertures. The only short fall is the slightly midrange focal length which might otherwise making it a broad base application telephoto lens. That was essentially why the Micro-Nikkor 105mm series do have a little slight edge over the standard telephoto version(s). In total, Nikon had released various 105/f4, 105/2.8, 105/4 Bellow, 105/2.5, 105/1.8S, DC-Nikkor 105/2.0D, UV-Nikkor 105/4, AF 105/2.8D and as at 04.2008, the current model is the AF-S VR105/2.8G (IF-ED). All these subsequent Nikkor prime tele-lens models are/were an evolved form which originated from the superbly crafted Nikkor-P 1:2.5 f=10.5cm lens that first appeared during the Nikon rangefinder days.

Additional information relates to
Nikon Optical Finders compatible to this Nikkor-P.C. 1:2.5 f=10.5cm Telephoto lens:-

As mentioned earlier, prior to the Nikon SP (1957) which has a built-in bright-line frame for 105mm focal length, all previous Nikon RF camera models can only make use of an optional optical finder for picture composing. As most of the subsequent Nikon camera models had included the 105mm as a standard for in-finder focusing aid system (
Nikon SP: 28/35/50/85/105/135mm; S3:35/50/105mm; S4: 50/105mm; S3M: 35/50/105mm) which eliminating further need for such add-on accessory (but some of the special finders developed at later stages do have their own strength over built-in bright-line frames guide esp. in terms of flexibility for use with multiple lenses). For an example, early 10.5cm version was joined in with another black model, where it has a built-in Bright-line frame as well as parallax correction); further, Nikon has also designed two Zoom finders with 10.5cm focal length included: Variframes Finder and Varifocal Zoom Finder. Where both also include other popular focal lengths from 35mmm~135mm. The main difference between the two is, Variframes Finder varies the frame size to conform to the field of view from 35-135mm; the Varifocal Finder changes the size of the image to correspond with the lens in place (from 35~135mm). The alternate Sports Frame Finder, if I am not mistaken, only provides outlines for 35m, 50mm, 85mm and 135mm focal lengths only, and it has omitted the 105mm focal length, So, it may not be compatible unless you use in-between frames as a rough guide.
Early chrome version of the Nikon 10.5cm Optical Finder Nikon Optical Finder 10.5cm Black version side view Nikon Variframes Optical Finder  side view - LINK Nikon Varifocal Zoom Optical Finder - LINK Nikon Sports Frames Finder - LINK
| All these variable Optical Finders will be featured on a separate section |

Nikon Optical Finder 10.5cm Black version with bright-line frame indicator Nikon Optical Finder 10.5cm Black version top view showing various date encodings and distance adjustments
The early chrome version of the 10.5cm-specific Optical Finder has a helical wheel at the rear end to adjust focusing. It has a small 10.5cm marking at the front. Like other older Finders for other focal lengths, it has a circular "Nippon Kogaku" company name that wrapped around the eyepiece at the rear end. The black version has both the "10.5/Nippon Kogaku" name re-allocated top the top section. It supplies a bright-line frame for 10.5cm and parallax correction. This is more popular than the earlier chrome version.

Credit: All images of the black version 10.5cm Finder courtesy of Mr. Kelvin Li which I have extracted from his popular gokelvincameras @ Ebay Store which retails for many hard-to-find Nikon, canon, Contax oldies. Image Copyright © 2008. All rights reserved. Please respect the visual property of the contributing photographer.
Nikon Optical Finder 10.5cm Black version base section with the mounting foot for Nikon RF cameras

Reflex F-Mount version fo the Nikkor-P 105mm f/2.5 - LINK
RELATIVE:- How this Nikkor-P telephoto lens evolved itself from here:- Both the Nikkor-P 105/2.5 and Nikkor-T 105/4.0 telephoto lenses had been replicated into F-mount version for the Nikon F/Nikkormat SLRs between 1959/1960. In 1970, the Nikkor-P was started to use a new scallop focusing ring design. The version appeared in 1973 was the work of Mr. SHIMIZU, Yoshiyuki where the traditional 5E/3G was first changed to a new formula of 5E/4G formation. The Pre-Ai version in 1975 with the same revised optical design has use a new hard-rubberised covering. The Ai version of the same lens was introduced in 1977 which was followed by the Ai-S 105/2.5 model in 1981. An anticipated AUTOFOCUS 105/2.5 has never been realized despite its huge success all these years.

Bellow Nikkor 105mm f/4.0 was introduced much earlier in 1970 but it was not popular other than serving bellow/close-up usage. While the Micro-Nikkor has also extended to 105mm range, it was first seen in the Micro-Nikkor 105mm f/4.0 back in 1975 as a non-Ai Nikkor. It went through two further rounds of updates (first as an Ai-spec in 1977 and followed by Ai-S in 1981). The 105/4 model was eventually was being replaced by the last of the manual focus version, Micro-Nikkor 105mm f/2.8S in 1984.

From here, the Nikkor had turned its lens development program to Autofocus. The first among the series, AF Micro-Nikkor 105mm f/2.8S was introduced in 1990 with an AF-D spec model was followed in 1994. The current version, AF-S VR Micro-Nikkor 105mm f/2.8G IF-ED seemingly has the best spec among all autofocus versions. The special application UV-Nikkor 105mm f/4.0S was first introduced in 1984 and has remained as the only model that didn't has any update so far. For the fast lens speed version of f/1.8 for 105mm, it was introduced as a native Ai-S telephoto lens in 1981. The Autofocus DC-Nikkor 105mm has chosen a different maximum aperture of f/2.0, further, it carries a native D-spec as it was introduced quite late in 1993. Please refer to the THE 105mm INDEX PAGE for more info.

Basic Technical Specification for Nikkor-P.C 1:2.5 f=10.5cm (105mm f/2.5) medium telephoto lens:-
Nikon SP with 105mm f/2.5 RF Nikkor-P.C
Lens Mount: Nikon Bayonet S-mount for RF models
Compatible Models: Nikon S-Series rangefinder models
Focal Length: 105mm (10.5cm)
Angle of View: 23
° 20' (Diagonal; 13° /19° 50' (Horizontal/Vertical)
Maximum / Minimum Aperture: f/2.5 / f/32
Optical Construction: 5 elements in 3 groups
Minimum Focusing Distance: 1.2m (approx. 4 ft) ~
(Marked values: Feet ONLY fro most models:-
OO 100, 50, 30, 20, 15, 12, 10, 9, 8, 7, 6, 5 ... ); European Model in metres (RARE): 50, 20, 10, 7, 5, 4...
Infra Index: Provided (

A lovely photo captured by Kelvin Li on the reflection of the lens coating on Nikkor-P.C 105mm f/2.5 Rangefinder version
Depth of field Tables for RF Nikkor 105mm f/2.5 telephoto lens

Depth of Filed Scales: f/32, f/22, f/16, f/11, f/8, f/4, f/2.5. (download Depth of Field tables above (185k Jpeg)
Magnification ratio: 2.1X; Filter Attachment Size: 52mm (P=0.75) Snap-On, Screw-in type / Series VII
Dimension: no info / Weight (body only): 510g (approx. 18.5oz); Leica Screw mount version (SM): approx. 18.-7/8oz

Standard Accessories: Front/Rear lens cap*, Lens hood** as standard accessories. Optional: Optical Finders (varifocal/variframes); leather lens case, optical filters etc. * Early version slip-on metal lens cap, later use plastic cap ** early version bayonet type, later version Snap-On type, both provide reversible storage.

Other Information: There is no known version so far that was having a preset diaphragm mechanism on this RF Nikkor-P.C 105/2.5 yet (Please send me some pictures if yours is having this information to update/correct the info that appears in this site). Original listed/Suggested retail price in Japan: 31,200 Yen. This lens was also made available in Contax bayonet mount as well as in Leica Screw mount (M39). Serial Numbering References:- Early versions starts from 812000 ~ 821000. Followed up units could had been started from 912000~924900. Total Number: approx. 22,000 units. Ref:
Mr. Robert Rotoloni, author of An Illustrated History of Nikon Rangefinder Cameras.

Leica M39 LSM version of the Nippon Kogaku KK / Nikon's NIKKOR-P.C 1:2.5 f=10.5cm telephoto lens
Leica / LSM Nikkor-P.C 1:2.5 f=10.5cm coupled to Leica. Shown with metal lens hood in black & 10.5cm Optical Finder, approx. year 1957

Credit: Image courtesy of Mr. Peter Coeln from LEICA Shop®, Austria who also operates a popular Westlicht Auction House. Image Copyright © 2008. All rights reserved. Please respect the visual property of the contributing photographer.

NOTE:- THIS SITE REQUIRES A CONTAX-MOUNT Nikkor-P.C 105/2.5 for illustration purposes, anyone can contribute some pictures ?

previous | NEXT | 1/2 a little odd offering by Nikon that followed:- The Nikkor-T 1:4.0 f=10.5cm telephoto lens
Part One (105/2.5) - Part Two (105/4)

W-Nikkor-O 1:4 f=2.1cm | W-Nikkor.C 1:4 f=2.5cm | W-Nikkor.C 1:3.5 f= 2.8cm | W-Nikkor.C 3.5cm lens Group (3.5/2.5/1.8) | Stereo-Nikkor 1:3.5 f=3.5cm | 5cm (50mm) lens group | RF Micro-Nikkor 1:3.5 f=5cm | Nikkor-P.C 1:2 f=8.5cm lens group / Nikkor-S.C 1:1.5 f=8.5cm lens group | Nikkor-P.C 1:2.5 f=10.5cm lens group / Nikkor-T 1:4 f=10.5cm | Nikkor-Q.C 13.5cm lens group: 135/4, 135/3.5 Early / Last Version, 135/4 Bellow lens | Nikkor-H 1:2.5 f=18cm | Nikkor-Q 1:4 f=25cm | Nikkor-T 1:4.5 f=35cm | Nikkor-T.C 1:5 f=50cm | Reflex-Nikkor 100cm f/6.3

System Accessories for Nikon Rangefinder cameras
Optical Finders (4 parts):-
Fixed Focal length Finders (index page): 2.1cm, 2.5cm, 2.8cm, 3.5cm, 35cm Stereo, 5cm, 8.5cm, 10.5cm, 13.5cm | Variframe / Varifocal / Sport-frames | Nikon Reflex Housing

Nikon S36/S72/S250 Motor Drives / S36 Manual | light meters | Nikon RF Flash/Speedlights | Close-up photography / Repro Copy Outfit / Nikon Bellow Focusing Device (in progress) | Cases/Compartments | Lens & body caps, Lens Hoods/shades, Original Price Lists | packaging/boxes

Instruction Manuals

Related info:- Main index page for Leica/Leitz | Contax/Carl Zeiss | Seiki Kogaku (Canon)

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Nikon Auto Focus Nikkor lenses:- Main Index Page
Manual Focus Nikkor lenses:- Main Index Page

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