Difference between revisions of "Aristostigmat"
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| image_text=[[Meyer|Hugo Meyer]] wide angle Aristostigmat f7.7, probably studio variant | | image_text=[[Meyer|Hugo Meyer]] wide angle Aristostigmat f7.7, probably studio variant | ||
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| − | The big brass lens in the image above is heavier than a modern SLR, it's sized for a big [[studio camera]]. | + | The big brass lens in the image above is heavier than a modern SLR, it's sized for a big [[studio camera]]. The image shows in its lower left corner a drawing of an Aristostigmat f6.8. Much smaller variants for [[hand camera]]s were available, fitting in [[Compur]] shutters. Intermediate sized focusable variants may have been the fastest like the Hugo Meyer Aristostigmat 180mm f4.4. The Aristostigmat was a commercial success compared to the poor success of [[Bausch & Lomb]]'s similar patented "Double-Gauss" lens of Alvan G. Clark. The Gauss lens was an achromatic doublet with a little air between the lens elements. The Aristostigmat was made as symmetrical pair of two such Gauss lenses. Only "meniscus" type lens elements were used to reduce reflections. The type of achromats reduced sperical abberation, and the paired achromats together reduced astigmatism as well as the 6-element [[Planar]]. |
==Links== | ==Links== | ||
*[http://photo.net/large-format-photography-forum/00RbKf Meyer Görlitz Weitwinkel Aristostigmat 8cm f/6,3] in photo.net [[Large format]] Forum [http://photo.net/large-format-photography-forum] | *[http://photo.net/large-format-photography-forum/00RbKf Meyer Görlitz Weitwinkel Aristostigmat 8cm f/6,3] in photo.net [[Large format]] Forum [http://photo.net/large-format-photography-forum] | ||
| + | *[http://de.wikipedia.org/wiki/Aristostigmat German Wikipedia] | ||
[[Category:German lenses]] | [[Category:German lenses]] | ||
Revision as of 18:24, 1 October 2010
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| wide angle Aristostigmat f8 in Pronto shutter |
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| Hugo Meyer wide angle Aristostigmat f7.7, probably studio variant |
The big brass lens in the image above is heavier than a modern SLR, it's sized for a big studio camera. The image shows in its lower left corner a drawing of an Aristostigmat f6.8. Much smaller variants for hand cameras were available, fitting in Compur shutters. Intermediate sized focusable variants may have been the fastest like the Hugo Meyer Aristostigmat 180mm f4.4. The Aristostigmat was a commercial success compared to the poor success of Bausch & Lomb's similar patented "Double-Gauss" lens of Alvan G. Clark. The Gauss lens was an achromatic doublet with a little air between the lens elements. The Aristostigmat was made as symmetrical pair of two such Gauss lenses. Only "meniscus" type lens elements were used to reduce reflections. The type of achromats reduced sperical abberation, and the paired achromats together reduced astigmatism as well as the 6-element Planar.
Links
- Meyer Görlitz Weitwinkel Aristostigmat 8cm f/6,3 in photo.net Large format Forum [1]
- German Wikipedia
