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On Friday 30 March 2007 14:59, Adrian Midgley wrote: > >> Have you made one yet? The guide indicates to me the film should be > >> overexposed colour film - eg the places where the negative is black. > > There are proper filters for it - eg Wratten *#87* or *#89* - opaque to > visible light, passes IR. > > Might be overspecified to use one, espec if it is 50-60mm wide, but some > of them are made as sheets and there used to be Cokin filters, probably > still are. > Are those not designed for cameras, rather than webcams? Not come across the items you mentioned specifically, but I know you can get IR filters - and even IR full conversions - for SLR type digital cameras. Sadly, a little out of my price range. In the mantime, I will see what Google turns up regarding the filters you mention Adrian. Mark -- The Mailing List for the Devon & Cornwall LUG http://mailman.dclug.org.uk/listinfo/list FAQ: http://www.dcglug.org.uk/linux_adm/list-faq.html