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Flattener/filter conflict
Hi guys,
I really need some advice here. I have a problem with my field flattener when I introduce a filter into the optical chain. The flattener works great when used on it's own but when I place a filter between the flattener and my T ring adapter the results look as if the flattener wasn't even there. It is frustrating me because I want to use my LP filter with the flattener to get those pin point stars to the edge of the field. I'm using a modded 550d on a SW f 5.5 Esprit 100. Any suggestions to solve this problem would be greatly appreciated.
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