Dave Wooten said:
I am considering nikon m 450 9.0 and the compact fugi 450 12.5, will be used on 7 x 17.
Does anyone have experience with these lenses and opinions etc.
Both the 450 f/9 Nikkor-M and the 450 f/12.5 Fujinon-C are outstanding lenses with more than adequate coverage for the 7X17" format, even with movements. I doubt that anyone would be able to tell a difference between the two in terms of image performance on this format in normal use.
They differ in the following ways.
1. The Fujinon-C is smaller slightly and more compact and is mounted in a smaller shutter, the Copal #1. The Nikkor is mounted in a Copal #3.
2. The Nikkor-M has a much larger circle of illumination, and when stopped down gives much better performance than the Fujinon-C at the corners of the image on 12X20 and larger formats.
3. The Nikkor-M has a slightly wider aperture and the view on the ground glass is therefore marginally brighter. But having compared the two lenses on the same camera in the same conditions the difference between the two lenses in this regard are in my opinion inconsequential.
BTW, the Nikkor-M is of Tessar design (Commercial Ektar, etc.), the Fujinon-C of dialyte design (Artar, etc.). Both designs are capable of outstanding performance in the center of the field, but tessar type lenses appear to improve more on the margins of the field on stopping down than dialyte type lenses.
Just for the record, Apo-Nikkors are process lenses of different design than the Nikkor-M.