dcraw vs Exposure

dcraw is a free utility for decoding camera RAW photos, displaying metadata, and extracting thumbnails. The maker’s page reports support for 731 cameras, with documented examples of camera-specific formats including CRW, CR2, MRW, NEF, and RAF. Its four interpolation methods are bilinear, VNG, PPG, and AHD. Output color-space choices include sRGB, Adobe RGB, ProPhoto RGB, XYZ, and ACES. By default, dcraw writes PGM, PPM, or PAM; the -T option writes TIFF with metadata. The maker provides C source and Linux build instructions, including a gcc command, and says a self-contained DCRAW.EXE can be built for DOS or Windows from a source file in the directory. A basic plugin loads RAW files into GIMP, while the manual lists gphoto2 and Netpbm utilities among related command-line tools. The maker describes using it to process camera images after downloading them to a Linux PC. One important format limit: dcraw cannot decode JPEG files. It is free for all uses and is listed for Linux and Windows.

Exposure has no write-up on Specifiction yet; its figures are above.