I first read about the use of Foveon sensors for digital color infrared when I encountered an open access publication a couple of years ago (Fent and Meldrum, “A Foveon Sensor/Green-Pass Filter Technique for Direct Exposure of Traditional False Color Images”, Journal of Imaging, 2016, 2, 14.). What interested me about the authors's method was the fact that it was dead simple, at least for pictorial (artistic) applications, and reversible. With lovely Spring weather and bright sunshine the other day, I was in the mood to give this method a try for myself. I followed the steps described in the paper without modification: (1) remove the IR cut filter on the camera (easy on the Quattro), (2) set the ISO to 400 and the white balance to 4100 K, and (3) shoot through a green filter (Hoya X1). I decided to slightly modify the color balance of the out of camera images to suit my taste. Overall, I was delighted with the results. They are close enough to color IR film for my purposes, and a good use for my old green filters.
Hope your weekend is filled with good light.
