[Sunfish (Ray)]

Sorry the subject is a little dull but I have a limited view before the trees cut in and only three 40sec shots at f8 mean stacked in PS.

Worthwhile persisting with a non ED lense.?
I wonder if you can correct the fringing with a corrector rather than software?

This is a 400 6x7 F4 lense so required a lot of defringing to remove most of the bloodshot look. Surprising it works at all really but I am really only using the centre part of this huge lense on a small sensor. Really more like 600mm but I can still fit in the NGC 3293? in the corner with this lense rather than the ED 800 which is 1 kilo heavier and more like a 1200mm.