Re: DRAFT: eXIf 2017-03-02

Glenn Randers-Pehrson <[email protected]> Sat, 4 Mar 2017 18:01:13 -0500
Newsgroups gmane.comp.graphics.png.general
Message-ID <CA+PdXcuRgPBuJX3Vx7fPpj=4DY6pcV2J6Z1fV7vrD-K6V-=xnQ@mail.gmail.com>
On Fri, Mar 3, 2017 at 10:50 AM, John Bowler
<[email protected]> wrote:

> I also don't see why I shouldn't just put the EXIF tags into IFD[0];
> the level of indirection is of no benefit in a single-image format.
> Maybe CIPA2016 intends to mandate that they appear there, but I can't
> be sure and, anyway, CIPA may change the spec.

Interesting.  Are you suggesting that an Exif profile containing only
a TIFF header plus (for example) an Orientation tag, a WaterDepth tag,  and a
GPSAltitude tag (without any IFD0, Exif IFD, or GPS IDF tags) would be valid?
It would be nice if that were so.

Glenn

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