2006/3/8, Godfrey DiGiorgi <[EMAIL PROTECTED]>:
> Most of my exposures are in .DNG format. Bridge shows the lens info
> in the "Camera Data (Exif)" panel ... for instance:

[...]

> I am not exactly sure why this is so important. I don't think I've
> ever actually looked at the lens info other than to respond to this
> thread.
>
> Godfrey

It is important to me. I'm currently working on a small tool that does
essentially the same as PTLens, but on DNG files:

* scan a folder of DNG files and for each:
* identify the lens used, the focal length, the focus distance, the aperture
* use (some of) these info to determine Adobe Camera Raw's Chromatic
Aberration settings from some sort of lens database (user-definable)
* set these correction values directly into each DNG file (so next
time I open it I got the right correction automagically!)

(and possibly do other things, like recover edges from raw, apply
Author and copyright informations, extract the JPG preview image into
a separate folder, start a custom PS action, and so on).

Of course, for those who have ONLY top-notch lenses with NO C.A at
all, this might not be really useful. To me it is ;-)

What mostly annoys me today is that 3rd party lenses are not
identified correctly (e.g my Sigma 18-125 is seen as a Pentax 28-80).
In a better world I would have only Pentax lenses, but I'm in real
life now :-( so I will need to setup some 'alias' function, where one
can say "hell, I don't have a 28-80, let's say it's a 18-125", or
"This 28-80 is used with f=125mm!!! (which shows in the EXIF!) It must
be the 18-125".

This tool will be protected by tens of patents filed in most countries
in the world, with a street price somewhere between US$ 150 to US$ 200
(I'm willing to buy all pentax lenses) ;-)

A discount price might be available to list members, under conditions ;-)

Patrice

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