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Old 21-10-2018, 10:32 AM
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Joshua Bunn (Joshua)
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Joshua Bunn is offline
Join Date: Oct 2011
Location: Albany, Western Australia
Posts: 1,093
Hi Tony.
A clear aperture of 38mm would heavily vignette a full frame chip, considering it's diagonal length is 43mm... and based on that, I highly doubt the flattener would flatten the whole field as well.

Regards Josh
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