Difference between revisions of "Collinear"
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− | The '''Collinear''' is a lens designed and made by [[Voigtländer]] (also spelled '''K'''ollinear on some lenses). It is a symmetrical double [[Anastigmat]] comprised of six elements in two groups.<ref>The technical drawing is taken from Photo-Sport (Paris) Catalogue 1930, p44.</ref> | + | The '''Collinear''' is a lens designed and made by [[Voigtländer]] (also spelled '''K'''ollinear on some lenses).<ref>Based on dating some camera models, such as the [[Alpin]], it would appear that the spelling '''K'''ollinear is the late 1920s spelling.</ref> It is a symmetrical double [[Anastigmat]] comprised of six elements in two groups.<ref>The technical drawing is taken from Photo-Sport (Paris) Catalogue 1930, p44.</ref> |
Revision as of 21:29, 22 October 2012
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Voigtländer Collinear f/6.3 image by Dirk HR Spennemann |
The Collinear is a lens designed and made by Voigtländer (also spelled Kollinear on some lenses).[1] It is a symmetrical double Anastigmat comprised of six elements in two groups.[2]
Table 1 Coverage of the Voigtländer Collinear f/6.3[3]
Focal Length |
Covers Wide Open |
Covers Fully Stopped Down |
Compur Shutter |
75mm | 4½ x 6 | 6 x 6 | 00 normal |
90mm | 6½ x 9 | 9 x 9 | 00 normal |
105mm | 8½ x 10 | 9 x 12 | 0 normal |
120mm | 9 x 12 | 10 x 15 | 0 normal |
132mm | 10 x 13 | 13 x 18 | 0 normal |
150mm | 12 x 15 | 15 x 20 | I normal |
165mm | 12 x 16½ | 16 x 21 | I R3 |
180mm | 13 x 18 | 18 x 24 | I R 3 |
200mm | 15 x 10 | 21 x 27 | II R 4 |
250mm | 18 x 24 | 21 x 27 | II R 5 |
310mm | 24 x 30 | 27 x 35 | III R 8 |
370mm | 27 x 35 | 30 x 40 | IV R 10 |
440mm | 30 x 40 | 35 x 45 | |
520mm | 35 x 45 | 45 x 55 |