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Forum: Pentax SLR Lens Discussion 02-01-2019, 06:34 AM

DA* 60-250 mod for FF
Posted By normhead

Replies: 293
Views: 82,891

I suspect every few years having the focus group cleaned and lubricated will reduce SDM problems.

Forum: Pentax SLR Lens Discussion 05-28-2017, 03:21 PM

DA* 60-250 mod for FF
Posted By normhead

Replies: 293
Views: 82,891

I'm really curious, since the lens vignettes in the corners, and because of the construction of the lens you can't really extend the corner at all, if this has any effect. It would be nice to have a test before and after test image.

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