The blending mode “Color Dodge” creates realistic results.
Simulate Infrared Images
Open a photo in Camera Raw; you can do this either in Bridge, using the
right mouse key and clicking “Open in Camera Raw,” or directly in
Photoshop, by selecting File → Open as Smart Object. Apply basic
adjustments to optimize your image (for example, with the “Recovery” and
“Fill Light” slides), then switch to the “HSL/Grayscale” tab. Check “Convert to
Grayscale,” and set the Blues down to around -85. Set the Greens to +90
and the Yellows to +20.
Tre e s a n d b u s h e s s h o u l d n o w s h i n e i n t h e t y p i c a l w h i te , a n d t h e s k y s h o u l d
appear almost black. If you want to go on and simulate some grain, switch