Re: Exif makernotes not shown?

[Jef Driesen <jefdriesen hotmail com>]

Lutz Müller wrote:
> > Lutz Müller wrote:
> > > On Fri, 2006-08-04 at 08:57 +0200, Jef Driesen wrote:
> > When I run this command on my system, I get very different results:
> >
> > jef manta:~$ exif --show-mnote IMG_3485_small.jpg
> > (...)
> > Segmentation fault
> >
> > So there is certainly something wrong here.
>
> Already fixed in CVS (exif package). Get the CVS version if you plan to do
> some work on the library.

The version from CVS works fine here. Thanks!

> > Is there some documentation how to add extra MakerNote tags to libexif?
>
> As far as I know, Canon did not publish the specification of their
> MakerNote tags. Therefore, you need to reverse engineer the contents. The
> libexif source code that scans maker notes resides in
> libexif/libexif/canon. Have a look at the files - they are not difficult
> to read.

Seems not to difficult. Many tags are already documented from other 
projects (e.g. exiftools mentioned in the libexif), so reverse 
engineering is not always necessary.