> -----Original Message----- > From: Bob Blakely [mailto:Bob@Blakely.com] > > For a 4x5 image, 6.4 inches will give 1/3 stop fall off at > the corners. 3 > inches will give about 1 stop fall off. So the longer the focal length, the less noticeable the falloff. Also, the longer the exposure time. Good. If I use my 4x5 view camera with decent extension, I should be OK. Greg
