Quote Originally Posted by xkaes View Post
Fujinon image circles 135mm vs 150mm:

W f5.6 -- 228mm vs 245mm
NW f5.6 -- 206mm vs 224mm
CM-W f5.6 -- 214mm vs 223mm

Mean difference = 15mm or 7.5mm (~0.25") in each direction.

Significant for 4x5" work, where you have AT LEAST an inch of play in any direction with the SMALLEST image circle?
Guess you've never run out of coverage by 14.9mm....