Quote Originally Posted by 2F/2F View Post
Ditto. I have used this lens extensively for rail camera movements on 4x5, and never noticed any "weirdness" in my exposures on transparency film. With 6x7, I wouldn't even think to consider it an issue. If your negs are coming out underexposed, I would first look at your metering technique.
X4...

Agree, checking the metering technique, and ensuring it is really appropriate to the situation and camera setup, seems a first step. I have never had real issues with light fall off with my Super Angulon 75mm on my 4x5, which is a pretty wide angle on that format (equivalent to some 25mm on 35mm film).