> From: David Dyer-Bennet <dd-b@xxxxxxxx> > . When you use > an R87 in *front* of the lens, it's fighting with the "hot mirror" > inside the camera body. > I used to know that, but I completely forgot about it when I ordered the filter. All things considered, my next idea is to give a try to removing the internal blocking filter of the Rebel XT myself and then use the filter (I know I will have to set up the picture first and then install the filter to shoot). I wouldn't do it to the T3i, since its brand new, but I tried to sell the XT and nobody wanted it, so heck. Its all for Science! Somebody mentioned articles in digital IR - I remember professor Davidhazy also has an article about IR experimenting with an Agfa camera! Tina, I said I was rich, but "conceptually", as in learned and cultivated ;) But I would love a brand new M8, for sure. Perhaps I can get someone to buy it for me! **************** Alberto Tirado