Archived posting to the Leica Users Group, 2005/09/03
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]I was trying to understand if there was something more that I did not understand ..... questioning MY knowledge. My suspicion is that the sensor is not either planar with the optical film plane or not flat. Either is possible, but detectable with any other lens, not Leica only.. Frank Filippone red735i@earthlink.net Frank I had thought the out-of-focus effect might be caused by the sensor/light acceptance issue. But I'm not shure, finally. Didier I understand the issues of light transmission and, in reality, light acceptance by the sensor... But the original posting complained of out of focus areas....???? I do not see a connection for the plane of focus and the angle of acceptance. Frank Filippone I'm not an expert on it; but I know that film grain has much more tolerance concerning the angle of the incoming light, than sensors usually have. In the centre of the sensor, the light is captured in the ideal 90 degrees angle, but the more you go to the corners, the more this angle is increasing, and the quality too (like a kind of softness-vignetting). _______________________________________________ Leica Users Group. See http://leica-users.org/mailman/listinfo/lug for more information