I R Filters

[Pa]

i see robw25 [picture of the week] had his d70 converted to ir....
was wondering if it's possible to buy filters to do the same job...or a program that can be used to achieve a similar result..

[Matt. K]

Hi Pa
You can buy filters to place over the lens. These are normally very dark red or black depending on how much if any visible light you want to record. The D70 is usefully sensitive to IR but the D200 and D300 have very strong IR filters over the CCD, so are not that useful for IR. The Nikon Coolpix 950 and 990 were excellent for IR. True IR can't be done with software.
Cheers!

[digitor]

Converting the camera by changing the AA filter over the sensor as Rob did gives you the advantage of being able to see what you're taking a picture of!

Cheers

[robw25]

was wondering if it's possible to buy filters to do the same job

Pa
i believe if you use nd and ir filters on the lens you have to have longer exposures, which is shit when its windy !

cheers rob

[surenj]

I got myself an IR filter from the net for $25 but it's difficult to use as you can't see through the lens (you have to compose first on a tripod) and even on broad daylight the exposure can be several seconds which causes the trees to be blurred.

[adam]

Simply putting an IR filter (such as the R72) over the lens on your dslr may require long exposures (due to the IR blocking filter installed in the camera).
You can have your camera modified, then you can do shots handheld. I got my G2 done by David Burren at Khromagery and I think it was super worth it! but just saw his website, they stopped converting cameras to IR last week!

[Pa]

thanks for the advice...

[adam]

If you want filters,
Hoya R72 can let you do false coloured images (passes 720nm onwards).
Hoya RM90 for pure IR (black and white, passes 900nm onwards).
B+W 093 (87C) is another I can think of
or a Cokin P007 89B.

I think there are others but only those have come to mind so far.