Re: [CREATE] Lens correction database

On Fri, 11 May 2007, Pablo d'Angelo wrote:

[...]


> The problem is that the distortion parameters change with the focus. They
> are different for short distance (as in the test shots) and the far distance
> (where the camera is usually used).

Unfortunately, not all cameras store the focus distance in their
exif. For example for Canon EOS (20D ,300D, 350D, 5D, Digital Rebel XT,
1D, 1Ds) see,
  http://photo.net/bboard/q-and-a-fetch-msg?msg_id=00F5eG
the Makernote 0x0004: FocusDistanceUpper and FocusDistanceLower
always show 0.

Maybe it is still hidden somewhere in the  makernote ...

Arnd

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