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p.1 #1 · p.1 #1 · Contax N to Canon conversion - initial results | |
OK. After a couple fits and starts, I finally got the conversion done. Intially, I wasn't sure if it was working, but I discovered that my uncertainty stemmed from a rather significant ignorance of the way Canon bodies worked (unlike Contax's they are not intuitively obvious). The lens converted was teh Zeiss Vario-Sonnar 24-85mm f3.5-4.5.
Using it on a Canon 5D, the lens works better than I anticipated. I see no issue in the operation of the lens at all. Autofocus and aperture control all work as if it were a Canon lens. If fact, I think the lens' autofocus might actually be faster than it was on the Contax N1. Other than a few impossible screws involved in the conversion process, I have no complaints. My hat's off to Conrus for get it done.
I set up a quick test shot -- a wall of boxes that I had in the area, arranged in a flat plane. lit with a pair of umbrellas, the camera set on autofocus, the lens at 85mm, and the test wall was about 4 feet from the film/sensor plane. The film/sensor plane was about a parallel to the test wall as I could arrange by sight (no doubt it wasn't perfect). Here is a test shot at f5.6 (half stop from wide open), followed by a center and a corner crop. Another shot at f14 appears to be a touch sharper along the left side, and shows a little less light fall-off. Raw conversion was done with the "standard" setting in the Canon software. Exposure isn't perhaps perfect but its good enough. No sharpening or any other image processing was applied after conversion.
http://gallery.photo.net/photo/4869919-lg.jpg
center crop:
http://gallery.photo.net/photo/4869914-lg.jpg
corner crop:
http://gallery.photo.net/photo/4869912-lg.jpg
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