Nippon Kogaku Nikkor-P·C 105mm F/2.5 LSM

Short telephoto prime lens • Film era • Discontinued

  • Announced:
  • · December 1953
  • Production status:
  •  Discontinued
  • Country of design:
  • · Japan
  • Original name:
  • · Nippon Kogaku NIKKOR-P·C 1:2.5 f=10.5cm
  • Class:
  • · Fast full-frame short telephoto prime lens
  • System:
  • · Nicca/Yashica (1942)

Abbreviations

P The lens consists of five elements.

Specification

Optical design:
35mm full frame
105mm
F/2.5
5 elements in 3 groups (Sonnar)
Leica screw mount
23.3° (35mm full frame)
Diaphragm mechanism:
Diaphragm type:
Manual
Aperture control:
Aperture ring
10 (ten)
Focusing:
Coupled to the rangefinder:
Yes
4 ft. (~1.2m)
Focusing modes:
Manual focus only
Manual focus control:
Focusing ring
Physical characteristics:
570g
<No data>
Accessories:
Series VII
AS-52 - Snap-on round

Source of data

  • Combining high speed with high resolution. Nikkor lenses for Nikon cameras, and other fine 35's booklet.

Manufacturer description #1

This intermediate telephoto is one of the most popular long-focus Nikkors. Its 2.1x magnification (23.5° angle of view), high speed, and unusual resolution, make it the first choice of many who seek their first telephoto lens. Features 5 elements; click stops to f/32. Accepts 52mm screw-in (or Series VII) filters.

Manufacturer description #2

Picture angle: 23"20'. Click-stops to f/32. Focuses to 4ft. or 1.2m in meter calibration. Attachment size: Slip-on outer diameter 54mm. Screw-in diameter 52mm, P=0.75. Tripod socket provided. Supplied with snap-on front cap 52mm, screw-on rear cap L, snap-on hood AS-52 and leather case.

From the Nikon Journal (Vol. 4, No. 1, September, 1986)

The five element three group formula of this lens was derived from the 8.5/2. Introduced in 1953, the 10.5/2.5 quickly gained a well deserved reputation for outstanding sharpness and resolution. Its popularIty was such that large quantities were sold with an adverse effect on the sales of the concurrent 8.5/2. The lens is thus commonly available in collector condition at a modest price. The 10.5/2.5 was the first NIKKOR to bear the now standard 52mm accessory size. Click stops to f32 were provided. Two production runs are recognized: 812XXX and 912XXX. The basic design of the lens mount remained unchanged in both batches. Minor cosmetic changes were introduced with the second batch: lugs for the early bayonetting lens hood were dropped, the chrome tripod socket was replaced with a black socket and the INF infinity marking was replaced with the greek symbol. Three different lens hoods were shipped with the lens at various stages of production. The fIrst was a glossy black metallic reversible bayonetting hood with "Japan" engraving similar to that on the 8.5/1.5. This was supplanted by an unmarked black plastic reversible snap on hood. The final version was a black plastic reversible snap on hood with focal length, f stop and N-K logo markings. The bayonetting hood came with a black metallic front cap designed to push over the reversed hood. The black plastic hoods had a 52mm black plastic snap on cap embossed with the N-K logo. A full line of 52mm filters was available. The lens was sold with a fitted brown leather case. A chrome tubular 10.5cm optical finder was initially available. This was supplanted by a black 10.5cm ALBADA style reflecting viewfinder; both had parallax correction to the four foot near focus point of the lens.

From the editor

6086 units with the Leica screw mount were produced.

Lenses with similar focal length

Leica screw mount (6)
Canon 100mm F/2 LSMM6 - 41.00m⌀58 1959 
Fuji Photo Film Fujinon 100mm F/2 LSMM6 - 43.5 ft.⌀58 1956 
Sankyo Kohki Komura 105mm F/2 LSMM5 - 41.50m⌀58
Sankyo Kohki Komura 105mm F/2.8 LSMM5 - 41.50m⌀48
Sankyo Kohki Komura 105mm F/2.5 LSMM6 - ?1.50m⌀48
Yashica Super Yashinon 100mm F/2.8 LSMM? - ?1.00m 1959 

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