Re: CFD: eXIF 2017-0207

> From: John Bowler <[email protected]>
> Subject: Re: [png-mng-misc] CFD: eXIF 2017-0207
> Date: February 12, 2017 at 8:52:09 PM EST
> 
> $ pngdumpmeta --exif <Alaska.png >/dev/null
> Warning: Directory OlympusCs, entry 0x0101: Strip 0 is outside of the
> data area; ignored.
> $ pngdumpmeta --exif <BigelowLakes.png >/dev/null
> Warning: Directory NikonPreview, entry 0x0201: Data area exceeds data
> buffer, ignoring it.
> 
> Neither "exif" nor "exiftool" output any messages however I don't
> think either default to outputting those specific directories,
> pngdumpmeta just iterates though the whole set of EXIF data.  The
> *original* JPEG images are here:

By default, ExifTool doesn't copy the PreviewImage (like pngdumpmeta).

However, pngdumpmeta is getting the wrong offset for the Olympus 0x0101 tag (SerialNumber) -- it has a perfectly good relative offset inside the makernote data area.

- Phil
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