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Old 05-09-2008, 04:13 PM
Ian Robinson
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Ian Robinson is offline
 
Join Date: Jan 2007
Location: Gateshead
Posts: 2,205
Quote:
Originally Posted by dugnsuz View Post
Update…
Managed to do a quick test last night.
Flipped the filter over so that the filter glass was now about 3mm further back from the rear lens element.
Attached pic shows the effects of the filter in its 2 different positions.

Left hand pic – filter closer to lens
Right hand pic – filter further from lens

The vignetting/reflection effect seems to be less defined and demarcated in the right hand pic – looks more like a vignetting effect that could be dealt with by flats.

I’m too lazy for flats though!!!
That's a very big difference in the observed effect.

How would flats fix it ?
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