I have a 600D/T3i and want to get the infrared effect I used to get with infrared film way back... I can't afford to get a camera just for this, and get it specially converted. I've bought a couple of 720mn filters from E-bay to try and get the effect I want.
I've used custom white balance, long exposures etc, on sunny days but am not seeing any typical effects e.g. white grass. One of the filters, a Green L, has just been reviewed in Digital SLR magazine, and was considered to work.
I haven't tried messing around in software yet as, according to the article, it should be possible to see the basic effect, in camera, on the LCD.
Although I did the test with a TV remote control to assess whether my 600D, could see IR wavelengths, and it could, I don't seem to be getting anywhere with this!
Has anyone had success with a normal, rather than converted, 600D?
I used to use a Hoya R72 filter on my 5D2 (now I have a converted 40D) and I never experienced any problems. What I found was it was best to shoot in manual to get the correct exposure. Also, I set the White Balance to 2700k, it makes it easier in post processing. Be prepared for longer exposure times, even if you up the ISO settings.
Here is an out of the camera (5D I), no post-processing, example of using an R72 filter:http://www.gregoryferdinandsen.com/Images/SAV2009/Savannah_Forsyth_Park_R72_Jul09_005.jpg