"Matt McKay" <nospam@nospam.com> wrote in message news:jGJ1b.54601$bo1.43909@news-server.bigpond.net.au...

> Does anyone know if the 1000nm Infrared (x-ray) filter comes in a 52mm size?

> The closest I've see is 58mm.

>

> I can use a step-up ring to fit it, but then if I want additional lenses or

> filters then I need to step it down again :(

Use it as the outer filter (and it is likely that accessory lens converters will not work well

used on top of a thick filter set). You can also look into Kodak gels - these can be cut

to drop in behind another filter or a lens converter...

--

David Ruether

d_ruether@hotmail.com

http://www.David-Ruether-Photography.com