positive exposure shift may be non-linear (highlights compression), while auto-bright is linear.
BTW, LibRaw's dcraw_process() is only 'sample' processing. It is not ideal and not in development. We hope developers will implement own processing on top of LibRaw::open_file/unpack.
positive exposure shift may be non-linear (highlights compression), while auto-bright is linear.
BTW, LibRaw's dcraw_process() is only 'sample' processing. It is not ideal and not in development. We hope developers will implement own processing on top of LibRaw::open_file/unpack.