Infrared photography

I was reading an English magazine announcing an Infrared Filter for digital cameras.
I think that using an IR filter, we can get infrared pictures without any modification of the camera.

I can remember I have done IR photography with slide film, but that was some 40 years ago...:wink
However, the magazine was saying that certain digital cameras have an IR blocking filter.
I have been googling for a while now and I could not find any information about this matter concerning the Canon 350 D the Canon 20 D or the Canon 5 D.

Using one of these cameras and an IR filter do I get IR photos ?

Thank you people !

AntonioCorreia,
I believe all the Canon cameras have an IR blocking filter over the sensor. However all that means is you need a longer exposure
I created this quick IR page that show what I use and the results I get with using a Hoya R72 IR filter <-- click to see

It should answer your questions

John_B wrote in post #5788239
AntonioCorreia,
I believe all the Canon cameras have an IR blocking filter over the sensor. However all that means is you need a longer exposure
I created this quick IR page that show what I use and the results I get with using a Hoya R72 IR filter <-- click to see

It should answer your questions

Thank you John !