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Old 07-11-2021, 08:31 AM
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floyd_2 (Dean)
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Join Date: Dec 2009
Location: Cecil Hills (Sydney)
Posts: 557
Out of interest, what back focus are you using from the back of the reducer to your chip? There seems to be 2 schools on the correct distance. One being 85mm, and the other being 105mm. On my C9.25 I’m using 85mm and the results are great to the edge using a Sony A6000 (6000x4000px) as my camera.

Also, where in your image train is the reducer, as you didn’t specifically mention it with respect to your image train layout. You probably have it all spot on, but just in case there’s a problem there.
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