This lens was tested 10/76 by Modern Photo. The list price was $822.50!! Wt.
is 3 lb. 5 oz. Size: 3.75 inches long x 4.175 inches wide. Minimum focus is
23 feet. Focal length was 571mm and distortion was 1%. Resolution at f/8 was
acceptable/34 and good/27 (center and corner). Contrast at 15 lines/mm was
medium/38 and high/36 (center and corner). It takes 35.5mm filters at the
rear and there are 4 air filters to keep the air clean when changing focus.
There should also be a rotable tripod socket attaches. I hope this helps.
Warren Kato
wkato@xxxxxxx
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