Policar
11-Oct-2010, 16:13
I recently purchased a lightly-used 90mm f6.8 Grandagon-N with a high serial number (green ring). The lens looks as new, but it has a weird problem. Wondering if it really is a problem.
Basically, there's virtually no resistance when I move the aperture blades. I have other, similar lenses in Copal 0 and Copal 1 shutters and there's always some resistance. Is this just because the lens is so close to new? I mean it's almost inertial, like I can tap the dial and it keeps moving a tiny bit. Is this simply due to a lack of wear? It's a very substantial difference.
Also, should I expect soft corners and major fall-off (when shooting chromes) with this lens? I've heard it's not very good, after I bought it, of course, but the 90mm Schneider XL is twice the price... I may split the difference and buy a center filter, though that wouldn't help with softness. Thanks!
Basically, there's virtually no resistance when I move the aperture blades. I have other, similar lenses in Copal 0 and Copal 1 shutters and there's always some resistance. Is this just because the lens is so close to new? I mean it's almost inertial, like I can tap the dial and it keeps moving a tiny bit. Is this simply due to a lack of wear? It's a very substantial difference.
Also, should I expect soft corners and major fall-off (when shooting chromes) with this lens? I've heard it's not very good, after I bought it, of course, but the 90mm Schneider XL is twice the price... I may split the difference and buy a center filter, though that wouldn't help with softness. Thanks!