On 20/08/07, Gregory Maxwell <gmaxwell(a)gmail.com> wrote:
We don't copy the EXIF today for good reason:
some jpegs have huge
blobs of data stuffed into the jpegs. A complete matrix+shaper ICC
profile is much larger than most of our thumbs. There are also thumbs
in the EXIF of a lot of images.
I was about to say just this - the [[:en:Casio Exilim]] throws about
30KB of crap into the EXIF of every photo.
Has anyone seen any written recommendations on exif
data that should
stripped for thumbnails?
The trouble with EXIF is that it's not actually a maintained standard,
just more of a tacit agreement between camera manufacturers. (And some
play fast and loose even then, notably Canon.)
We could put a cut-down set of EXIF data into thumbnails, and since we
can regenerate these from the original any time we like it shouldn't
permanently lose data if we realise there's a field we could really do
including with after all. Note that I'm not making suggestions here
for what data to include ...