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.
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 capture IR light.
This only means that the camera sensor can "see" a bigger light spectrum than the human eye can, but it will "see" the Infra Red (extreem Red light) like white light.