Images taken with a modified Nikon D90. The original IR blocking filter was replaced with a special filter that passes Near Infrared and Blue, blocking all other visible light. The images were white balanced to yield a neutral grey on true grey objects. Some were converted to B&W in Lightroom.
Foliage has a high reflectance in IR, so the normal dark green in visible becomes very bright. By adjusting the white balance, greens in IR can be rendered as white, yellow or bright yellow-green. These false colors give IR its unique appearance.
The special “Super Blue” filter renders very deeply saturated blue skies, with contrasty clouds. By adding a yellow filter, the blue will be blocked and the effect is the same as a pure traditional IR filter. (Click on a thumbnail to enlarge).