Hi,
I don't have anywhere near enough knowledge to understand what you guys discussed so may I ask for a bit more basic info. I have a Hutech modded 40D plus a blue clip-in filter behind the lens. It is marked VLC-FF but Eric says, in another post, that it should be VLC-FF1 for the 40D. Do I need to worry?
Secondly, I have just bought a Canon 10-22 Lens which, of course, is an EF-S so I can't use the VLC-FF filter. Is there a screw-in equiv. filter for in front of this lens or does anyone have the colour curves etc that I can apply to the reddened, non-astro image resulting when I remove the VLC-FF?
Thx
Charles