Sven Neumann (sven@xxxxxxxx) wrote: > Robert L Krawitz <rlk@xxxxxxxxxxxx> writes: > > > I keep master copies untouched and rely on applications to show the > > implied rotation. > > You are aware that there's absolutely no good reason to do that? > Rotation of JPEG images using exiftran or jpegtran is a lossless > operation. iff the width and height is a multiple of 8 or 16 pixels (which usually is true for photos). jpegtran keeps the data intact for non-8-multiples but then the visible result is not exactly the expected rotation. Bye, Simon -- simon@xxxxxxxx http://simon.budig.de/