Difference between revisions of "Industar-51"
m (moved Industar I-51 to Industar-51: The I (or backwards-N) stands for Industar; you need one or the other, but not both.) |
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The '''Industar 51''' is a 210mm f/4.5 lens for [[large format]]. It was made by [[KOMZ]] in Kazan, often found on [[FKD 13x18]]cm large format [[Reisekamera|travel camera]]s. It has 20 aperture blades to stop down from f/4.5 to f/32 with round opening at all sizes. The name [[Industar]] was used for all similar 4-element/3-group lens constructions of the whole [[Soviet Union|soviet]] photo-optical industry. | The '''Industar 51''' is a 210mm f/4.5 lens for [[large format]]. It was made by [[KOMZ]] in Kazan, often found on [[FKD 13x18]]cm large format [[Reisekamera|travel camera]]s. It has 20 aperture blades to stop down from f/4.5 to f/32 with round opening at all sizes. The name [[Industar]] was used for all similar 4-element/3-group lens constructions of the whole [[Soviet Union|soviet]] photo-optical industry. | ||
+ | Optical formula <!-- derived from OPAL database --> | ||
+ | <pre> | ||
+ | RAD THIC GLASS DIAMETER | ||
+ | 57.68 8.4 LZ_TK16 46 | ||
+ | inf 9.3 AIR 22 | ||
+ | -129.42 4 LZ_LF5 41.5 | ||
+ | 52.97 5.5 AIR 39.5 | ||
+ | STOP 6.7 AIR | ||
+ | -407.4 3 LZ_OF1 40 | ||
+ | 54.080 11.2 LZ_TK20 41.5 | ||
+ | -83.56 41.6 | ||
+ | </pre> | ||
==Links== | ==Links== |
Revision as of 20:02, 5 March 2016
image by Uwe Kulick (Image rights) |
The Industar 51 is a 210mm f/4.5 lens for large format. It was made by KOMZ in Kazan, often found on FKD 13x18cm large format travel cameras. It has 20 aperture blades to stop down from f/4.5 to f/32 with round opening at all sizes. The name Industar was used for all similar 4-element/3-group lens constructions of the whole soviet photo-optical industry.
Optical formula
RAD THIC GLASS DIAMETER 57.68 8.4 LZ_TK16 46 inf 9.3 AIR 22 -129.42 4 LZ_LF5 41.5 52.97 5.5 AIR 39.5 STOP 6.7 AIR -407.4 3 LZ_OF1 40 54.080 11.2 LZ_TK20 41.5 -83.56 41.6
Links
- discussion on APUG [1]
- military version on USSRPhoto.com [2]