Sven Neumann ([EMAIL PROTECTED]) wrote:
> Robert L Krawitz <[EMAIL PROTECTED]> 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.

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