09-23-2018, 08:25 AM
The recommendation of the Gimp developers is that you use 32-bit floating point. This is the native format in which computations are done and is supposedly the fastest (it doesn't involve conversions). But of course it takes twice the RAM. For half that price, you have 16-bit integer or 16-bit floating point. I have yet to make up my mind about the benefits on one v.s. the other. The integer version could more accurately represent the values from a camera sensor but would be subject to round-off errors so this accuracy couldn't last.