Help judging performance of my FE55z, FE35f2.8z horizon/infinity

Started Jul 5, 2016 | Questions thread
Nephi Contributing Member • Posts: 531
Re: Help judging performance of my FE55z, FE35f2.8z horizon/infinity

JimKasson wrote:

I've got a copy that has been fine. I can take a hard look at it.

Jim

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Perfect.  This will be a good test because you've tested it and did not see decentering.  In my experience the best way to see the decentering is to take a level infinity test with somewhat equal detail on each far side (i.e. same trees, or similar structures).  Obviously a test shot at 2.8 is the best way to see the issue.  Though to be clear, stopping down does not seem to help much.

You have Imatest.  Is there not a way to put up a test chart and measure sharpness left to right?  I would think that would be the ideal approach.  You'd be the guy I'd trust to get the test right.

I'm anxious to see what you find.

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