Howto check to see if your digital camera can use an infra-red (IR) filter
From Wikihowto
Some digital cameras use infra-red or IR for range finding so their lenses block IR. These cameras will not be able to take IR photography.
[edit] Test you camera
Before you buy an IR camera filter, test you cameras ability
- Aim a remote control with the button pressed directly at your camera, and take a picture. If you can see a light from the remote your camera will with IR photography.

