Post-Processing III – Image File Formats: They Matter
To come back to the accurate rendering of colours, we need to return to the format in which the image is taken. We can use the same example of the colour space for this purpose, although this time there’s another limitation we want to avoid. Recall earlier that it was suggested RAW and lossless formats such as TIFF were preferred over JPEG?
JPEG and other ‘lossy’ formats have two disadvantages:
They reduce file size by throwing away some data (worse still, that happens every time you re-save that file); and
They are 8-bit files, and that bit depth is nowhere near enough to accurately portray the colours you need for a good quality image.
If your camera cannot shoot in a RAW format, please set it to use TIFF as the format in which to save your files. Yes, the file sizes are much larger, but what price image quality?