Kip Kubin Posted March 3, 2010 Share Posted March 3, 2010 The back focus is now off on my zoom. What should I expect to pay for the back focus to be adjusted on a Cooke 9-50 zoom? Can anyone tell me if this is a simple adjustment or a complicated ordeal for a lens tech. I'd like to know this information before I talk to anyone who repairs lenses. Thanks Kip Kubin Link to comment Share on other sites More sharing options...
Seamus Mulligan-Ferry Posted March 3, 2010 Share Posted March 3, 2010 It can depend on the lens, but generally it is just a matter of popping off the lens mount, adding or subtracting shims and checking on a bench collimator. With a Cooke 9-50mm, since it is an older lens (Std16), I imagine you may run into a problem of a lens technician not having shims that fit that lens on hand--so you may want to verify they have some that will work. Cost-wise, should take about an hours labor + the cost of shims. Link to comment Share on other sites More sharing options...
Premium Member John Sprung Posted March 3, 2010 Premium Member Share Posted March 3, 2010 What should I expect to pay for the back focus to be adjusted on a Cooke 9-50 zoom? Where are you? Perhaps someone here can recommend a place to do the work. -- J.S. Link to comment Share on other sites More sharing options...
Tom Jensen Posted March 3, 2010 Share Posted March 3, 2010 It can depend on the lens, but generally it is just a matter of popping off the lens mount, adding or subtracting shims and checking on a bench collimator. With a Cooke 9-50mm, since it is an older lens (Std16), I imagine you may run into a problem of a lens technician not having shims that fit that lens on hand--so you may want to verify they have some that will work. Cost-wise, should take about an hours labor + the cost of shims. What he said but if you have loose elements it may take a little more time. If in LA Paul Duclos is very good. It's not that big of an issue. To fix that is. Link to comment Share on other sites More sharing options...
Kip Kubin Posted March 4, 2010 Author Share Posted March 4, 2010 I'm in Nashville TN Duclos works on my anamorphic lenses but I was looking to find someone closer. Link to comment Share on other sites More sharing options...
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