nice_but_dim
newbie
Reged: 24/07/2008
Posts: 3
Loc: colchester
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hi been looking at infared photos on flickr and want to know can i do it with my d80 and which filter to use if i can 
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the wife knows it all?
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phiggy
Reged: 15/01/2002
Posts: 2438
Loc: Shropshire U.K.
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Check out this site and some of the links.
http://www.infrared-photography.co.uk/
Yes you can use the D80 but it is not as sensitive to I.R. as some older Nikon Dslr's
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Phiggy
Take nothing but photos leave nothing but Footprints
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El Sid
Going potty
Reged: 14/04/2003
Posts: 9477
Loc: Sussex-by-the-Sea
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You'll need a tripod and an IR filter such as the Hoya R72. Expect long exposure times too as I think the D80 has a very efficient 'hot' filter (one that blocks IR light) so it may be more insensitive to IR than some older/cheaper models.
If you have a remote control that operates with IR light you can get an idea how sensitive your camera is. In a dark room (preferably well after sunset) set the camera on a steady surface or tripod then operate and point the remote at the camera at the camera when the shutter is open. The longer the shutter time has to be before you see any kind of recorded IR trace the less IR sensitive the camera.
This way of doing digital IR is also one of the few photographic methods that really works well on hot bright days. For the best results try to keep the sun behind the lens otherwise it tends to dominate the exposure!
Shooting in RAW file mode seems to work best as you will need to do a fair bit of post production to get an effective -usually mono - image. I find that with images saved to JPEG the output quality can suffer enormously.
Be prepared to experiment in post production to see what gives you the result you want.
Here's a useful guide to digital IR and another...
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Nigel
Completely BSRIPN 
ElSid Gallery
A camera in the hand is more fun than one in the cupboard........
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LargeFormat
old hand
Reged: 24/10/2006
Posts: 1185
Loc: Buckinghamshire and Cumbria
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Yes you can is the short reply. You need to use an infra red pass filter on your lens. At this point your automatic exposure and, to a lesser extent, your automatic focus cease to work in the normal way. The autoexposure runs into trouble because the camera has an infra red stop filter in front of the sensor. The filter on your lens will pass infra red and stop most of the visible spectrum. The filter in front of the sensor will stop most infra red and pass visible light. The result is that very little light gets through to the sensor and long exposures are needed. As the wavelength of infra red is different from that of visible light its focus point is different. Some (manual) cameras actually have an infra red focus mark to compensate.
If you are really keen you can buy cameras without the infra red filter infront of the sensor. AP tested a couple by Fuji a few weeks back. You can also have the filter removed or even do it yourself. There are instructions on the web.
You will need to try out exposures and will need to use a tripod. Images will come our red and people usually convert to monochrome. You can also play about with false colour.
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BRIGHTSTAR
newbie
Reged: 11/07/2008
Posts: 22
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When taking a self portrait with my D40 using the remote, you can see the light from the remote in the photo, so I would suggest that the filters in the D40 might not be as strong as the D80 as you have stated.
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