Dan Fromm
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- Joined
- Mar 23, 2005
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- Multi Format
So if 150mm covers (I'm guessing roughly) 280-300mm, instead of their claimed 189mm, then (theoretically, assuming AoV doesn't change like Apo-Ronars do) a 355mm might cover 650-700mm.
That's well enough to cover 12x16" (500mm) with movements, 12x20" (600mm) should work stopped down, if you're lucky you might get 16x20" (650mm) out of it (maybe with slightly vignetting and/or soft corners).
Eh? Wot? Schneider claims 64 degrees for the 150/9 plasmat type G-Claron. A 150 that covers 280 - 300 mm at infinity cover 86 - 90 degrees. That's a considerable stretch. Considerable. Why do you believe its possible?
What to you mean by "AoV doesn't change like Apo-Ronars do?" Fixed focal length lenses don't change angle of view as focused distance changes. Why do you believe they do?
LJM, the threads you reference aren't that convincing. But I have to admit that some mention simply contact printing, which needs much less image quality than enlarging does. So perhaps with the right subject -- no fine detail towards the edges -- and contact printing ...