While we was on the LBC Ride Windsor Great Park & Virginia Water ride over the weekend I took my infrared camera out for the first time in a very long time.
I normally don't bring my Canon EOS Digital Rebel which has been converted to take photos in the Infra-red part of the spectrum. It is most effective in the summer with clear skies, bright sunshine & in bloom trees & flowers.
So in this case for trees and grass and other natural materials even some man made ones reflect the infrared part of the spectrum so in turn show up as a lighter colour or white.
InfraRed actually penetrates the human skin a few millimeters so can appear to be smoother and in some cases if you have very fair skin & veins close to the surface these may also be seen.