This may sound stupid to some of you, but does anyone know what the filter threa d is for this lens? I measured what I thought was 40mm, so natch - I think 40.5 mm right? No. A 40.5 seems to want to be the right size, but it will not thread on. So I assume (there I go again!) that it must be 39mm, and purchase my filter in 39mm. Wrong again. But I have never seen a 40mm filter. Does anyone know for a fact what it is? Any 240 Dagor owners?......
Bookmarks