Technical specs for Rodenstock and Schneider LF lenses indicate angle of view and image circle diameter at f/22. Consequently, the lens displacements are given in mm (shift, rise & fall) for th e same aperture. What about specifications at full apertures ? Nikkor specs mentions both of them, at full aperture (i.e. f/5.5) and at f/22 me dium range. It seems easier to appreciate if a specific lens will cover the 4x5" format and the remaining displacements, not only at f/22, but also at 5.6, 8, 11 ...
Who knows if a formula allows to calculate the angle of view and image circle di ameter at full aperture for these lenses from Rodenstock and Schneider, as I've never found these indications anywhere ?
Thanks everybody.
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