Description:

CinePaint is a free open source painting and image retouching program
designed to work best with 35mm film and other high resolution high
dynamic range images.

The 32-bit per channel color range of CinePaint appeals to 35mm
cinematographers and professional still photographers because film
scanners are capable of greater color bit-depth than can be displayed
on an 8-bit per channel monitor or can be manipulated in typical
programs. However, CinePaint is a general-purpose tool useful for
working on images for motion pictures, print, and the Web. CinePaint
supports many file formats, both conventional formats such as JPEG,
PNG, TIFF, and TGA images -- and more exotic cinema formats such as
Cineon and OpenEXR.