hello,
i live in France,my nightsky is polluted,i buy a CLS filter (ASTRONOMIK) ,i test it
here are two pictures :CANON 350Da +Olympus Zuiko 50mm/f4 1mn 800iso
without filter
http://www.casimages.com/img.php?i=0...4045545132.jpg
with the CLS filter :CANON 350Da +Olympus Zuiko 50mm/f4 1mn 800iso
http://www.casimages.com/img.php?i=0...4045545137.jpg
im verry happy with this filter