On 1/1/04, [EMAIL PROTECTED] disgorged: >I think a 20 stop filter would be dangerous to use for solar photgraphy. >It might block 20 stops of visible light, but let through enough other >wavelengths to fry your eye through the viewfinder. Even if you can't see >the sun at all. > >I would strongly discourage anyone from using any filter for solar >photography unless the filter is explicitly designed as a *solar* filter, >not just a very dark filter.
Peter is spot-on here. Couldn't endorse those words enough. I would only ever point a lens at the sun while using my own eye to frame it up *if it was an electronic ( non-optical) viewfinder* - and only then if it wasn't mine. I routinely get shots if the sun (setting/rising/high noon) for whatever story requirement demands it using 25 grand's worth (£) of Sony Betacam that belongs to the company I work for. No way would I do that if it was mine. If the 3 CCDs melt or whatever, it gets repaired by a very nice man with elbow-patches and tweakers in his breast pocket :-) Cheers, Cotty ___/\__ || (O) | People, Places, Pastiche ||=====| www.macads.co.uk/snaps _____________________________ Free UK Mac Ads www.macads.co.uk
