What is linear tiff data. What does it record?
Generally when someone refers to linear TIFF data, they are saying that the image data (normally RGB) is encoded linearly with respect to the amount of light in the scene (be it real or synthesized). Since most displays are nonlinear, it is common for image data to be nonlinear to compensate. Thus normal images are nonlinear, but in some applications it is more useful to have linear image data.