Click image for larger view.
Hoya R72 filter. ISO 800, 1.6sec exposure and I think it was about f/8.
No modification to image other than convert to B&W and minor levels adjustment.
I even left in the stuck hot pixels of my Canon 1D Mark III to remind Canon that perhaps they could take the lead of Olympus and add a pixel mapping functionality to their cameras to eradicate this issue.
Interestingly, other IR images with this 100mm f/2.8 lens showed a rectangular central hotspot which presumably arises from light bouncing off the rear lens element and a shadow being cast by the camera’s mirror box as I can’t explain it any other way. This central rectangular hot spot is subtly visible to the right of this image as a lightening of the sky.