EXCERPT page containing first few paragraphs. 2021-09-20 18:57:11
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The Rollei APO-Symmar 90mm f/4 Makro PQS is a short telephoto macro lens equivalent to a ~60mm lens on a full frame sensor (as shot here on the Leaf back).
Shot on the Hy6 Mod2 using the 80-megapixel Leaf Aptus II 12 digital back utilizing a 53.7 X 40.3mm CCD sensor and producing 10320 X 7752 pixel images.
The sensor area is thus 2.5X as large as with a 35mm frame, but with a 4:3 aspect ratio. Using the frame diagonal, the format ratio to a 36 X 24mm sensor is 1.55X, or 1.49X if the long side of the frame is chosen instead.
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These systems are hugely expensive, so make the right choice for your own needs (full frame vs medium format).
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