I modded an old Canon EOS 1000D camera, hoping to add IR 'night vision' to it but during testing I noticed that it doesn't capture the IR illumination at all despite the room being lit by two powerful IR LED arrays.
The mod procedure is described here: http://dslrmodifications.com/rebelmod450d4.html In there they instruct to add a clear glass piece in place of the IR filter but I din't as I don't have such glass available, so I left the "low pass filter 1" in place without any other glass or filter. But I dont see how not adding a clear glass could affect the result like this.
I have an old webcam that I removed an IR filter from too and it can capture the IR light illumination in complete darkness as expected.
What am I missing here? I thought removing the IR filter would work the same way as it did for the webcam.