Originally Posted by
Scott Davis
Would the ps945 cover whole-plate at portrait range? or just 5x7?
There is a quote from Mark Osterman on the Cooke website affirming that the PS945 covered whole plate at landscape distance.
"While I was told that this lens was designed with the 4"x5" format in mind I found that it had more than enough coverage for the 6 1/2" x 8 1/2" collodion plates I was making. The first thing I did after receiving the lens was to go into the field and try some landscape shots. With the lens stopped down to f.8 the image on the ground glass displayed great clarity. My assumption was that pushing the format would result in some falling off on the edges. In fact, they were remarkably crisp, and so I used camera movements to soften the upper portions of the negative."
from: http://www.cookeoptics.com/cooke.nsf...man_ps945.html
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