Difference between revisions of "Industar-51"
Line 12: | Line 12: | ||
Optical formula <!-- derived from OPAL database --> | Optical formula <!-- derived from OPAL database --> | ||
<pre> | <pre> | ||
− | RAD THIC GLASS | + | RAD THIC GLASS height |
57.68 8.4 LZ_TK16 46 | 57.68 8.4 LZ_TK16 46 | ||
inf 9.3 AIR 22 | inf 9.3 AIR 22 |
Revision as of 11:32, 14 July 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 height 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]