Question, where are you getting 1.15x crop? 2 x 0.64 = 1.28, or about aps-h. The image circle in DCI doesn't change the crop factor, its still 2, same for 4/3 or 3/2, the diagonal is alway the same - the diameter of the circle. The m43 diagonal in all aspect ratios isĀ 21.63mm, that never changes, right? You can see from the image below, all the aspect ratios are still within the m43 image circle, so they all have the same diagonal. Unless I'm looking at this wrong, but people seem to be calculat