Brilliant! This worked. Thank you Steve. Light was dim and I conclude this Gary Honis mod at the min has an IR cut filter. Now here is the surprising part:
1. I was able to compare it with an astromodded T3i with LPF2 removed. The light was bright. I imagine the LPF1 IR cut should have blocked the light. Makes me wonder if this camera is actually full spectrum.
2. Also compared with unmodded 60D. The brightness was in-between the Gary Honis mod and the astro modded T3i. I would have expected the unmodded to have the same or less brightness than the T2i. Not sure what's going on.
Wavelength cut off filters have specific cut-off points.
But do you know the wavelength range of the IR LED in the remote? It seem you are operating on the assumption that the LED light in the remote is only producing wavelength above _nm, say 720 or the like. But is this true?
Many IR LEDs leak visible light as well.
If you had an IR pass filter with a know cut-off spectral chart,
then you could put it in front of the remote,
point it at your cameras,
and then research the hotmirror transmittance spectrum graphs of your cameras/filters and determine more accurately "what's going on."