Originally Posted by
Oren Grad
Schneider's specification is 96 degrees coverage and 110mm image circle at full aperture, 120 degrees coverage and 166mm image circle at f/22.
Linear distortion is very well corrected for such an extreme wide - generally less than 0.5% - but of course apparent stretching of peripheral objects in the field - what many people mean by "distortion" - will be as extreme as the extraordinary field of view.
Desperately needs a center filter unless you want obvious vignetting as a special effect.
There is no other lens this wide for 4x5.
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