matt_t__brooklyn_ Posted December 31, 2005 Share Posted December 31, 2005 I remember reading a few months back a thread about IR photography that had a link to a place where you could purchase materials to make your own IR filters. I have done a search for this thread, but haven't been able to find it at all. Does anyone remember this thread and can they direct me to it or to the site directly? Thanks. Link to comment Share on other sites More sharing options...
paddler_b Posted December 31, 2005 Share Posted December 31, 2005 Are you talking about processing unexposed slide film? That is one chip way of doing it. You get the effect but images will be fairly soft. Of course, none of these methodes really replace an IR glass. koorus Link to comment Share on other sites More sharing options...
lex_jenkins Posted December 31, 2005 Share Posted December 31, 2005 Here's an article from the RIT site that might be of some interest: http://www.rit.edu/~andpph/text-infrared-filter.html You can buy a Wratten gel filter and cut it to fit over the rear lens element or in the window between the shutter and film plane. I'd put it behind the lens, tho', because the closer an additional surface is to the film or sensor plane, the more difficult it becomes to control dust spots and scratches that will show on the photo. Link to comment Share on other sites More sharing options...
matt_t__brooklyn_ Posted December 31, 2005 Author Share Posted December 31, 2005 Lex: I think that's what I'm remembering...a link to a place where you can buy the gel filter...it was much cheaper than spending upwards of $100 for a proper IR filter. Is it necessary to fit the IR gel to the rear lens element, or is it possible to fit it to a UV filter thereby creating a do-it-yourself IR filter? Link to comment Share on other sites More sharing options...
david_h._hartman Posted December 31, 2005 Share Posted December 31, 2005 Matt, To use a gel filter with a Nikkor lens just buy a Nikon AF-1, 2, 3 or 4 gel filter holder. The AF-1 and AF-2 are 52 and 72 millimeters respectively and accept 75x75mm (3x3") gels. If you buy used they will probably need cleaning and refoaming. The AF-3 and AF-4 gel filter holders require accessory rings. The AF-3 holder accepts 75x75mm gels and the AF-4 accepts 100x100mm gels. The AF-3 with accessory ring fits 52mm to 77mm lenses. I'm not sure what the AF-4's maximum size is as the information at B&H doesn't make sense, maybe 82mm? Call Nikon. Regards, Dave Hartman. Link to comment Share on other sites More sharing options...
vivek iyer Posted December 31, 2005 Share Posted December 31, 2005 Matt, This is what you are looking for, I think: http://www.edmundoptics.com/onlinecatalog/displayproduct.cfm?productID=1918 I can't find my earlier posting either. It is a *real* IR filter and works excellently. Now that your question has been answered, I think this thread also will disappear! Good luck! Link to comment Share on other sites More sharing options...
lex_jenkins Posted January 1, 2006 Share Posted January 1, 2006 I played around today with the tips on the RIT site. I found a bit of unexposed, developed leader from a roll of E-6 film and cut it for a rough fit inside the rear of one of my lenses on my D2H. The effect is interesting. It has that soft glow and wacky colors typical of IR. I haven't yet converted the pic to monochrome but I suspect it'll resemble a b&w IR photo pretty closely. Link to comment Share on other sites More sharing options...
matt_t__brooklyn_ Posted January 1, 2006 Author Share Posted January 1, 2006 Vivek: Yes, that's the link I was thinking of but couldn't find. Thank you so very much. So if my understanding is correct, I can slide a piece of that plastic filter in a Nikon gel filter holder and I will have what amounts to an IR filter? Link to comment Share on other sites More sharing options...
vivek iyer Posted January 1, 2006 Share Posted January 1, 2006 Matt, Yes, it will work fine. One enterprising soul on eBay is selling them mounted on various (size) filters. Old (still valid) IR techniques and a very resourceful site: http://www.a1.nl/phomepag/markerink/mainpage.htm Eric Boutilier-Brown' page on the IR modified D70: http://www.ebb.ns.ca/general/tech/infra-red.htm How D70 compares with D2X (won't work well) on someone who has tried the very same filter (Laurie) and links to pics taken with a D70. http://www.photo.net/bboard/q-and-a-fetch-msg?msg_id=00DDS5 Link to comment Share on other sites More sharing options...
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