Anyone familiar with Rolleiflex Lenses & Barrel Distortion can comment on whether there is barrel distortion in images produced by the TLR Rolleiflex lenses? Are the 80mm and 75mm lens of a retrofocus designs (means likely barrel distortion) or are they of some other design. The shortest non-rangefinder lens for medium format that I have experienced without distortion is the 127mm Mamiya RB/RZ lens. There is even slight (but noticeable if you look closely) barrel distortion on the Gauss design RZ 110mm lens. But on te RZ/RB definitely on 90mm and below lenses.