On Apr 21, 2006, at 2:40 AM, Thibouille wrote:
I'm really lost now. Could someone tell me how to convert between those formats and 35mm? 35mm -> *istDx is 1.5x 35mm -> 645 ?? 645 -> 645D ?? (I think it is 1.3x but not sure). 35mm -> 645D ?? 35mm -> 67 ??
The quick-and-dirty measurement for 6x7 to 35mm is to divide in half -- a 6x7 105mm lens is approximately equivalent to a 50mm lens on a 35. My 75mm is slightly wide, comparable to a 35mm lens on 35.
-Aaron

