I am looking at buying my first wide angle lens for my 4x5. I noticed that Niko n has two different 90mm's. One is a 4.5 and the other is an f/8. Both of them have what appears to be the same image circle of 235mm. Is this correct? I re alize that brightness is different but for right now price has to be my biggest concern. This may sound like a silly question but I would assume that the image circles would be different, however here that does not seem to be the case. Th ank as always for all the help. RJ
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