Re: dangerous users, misleading camera manufacturers
Re: dangerous users, misleading camera manufacturers
- Subject: Re: dangerous users, misleading camera manufacturers
- From: Chris Cox <email@hidden>
- Date: Tue, 7 May 2002 22:52:59 -0700
At 10:07 PM -0700 5/7/02, email@hidden wrote:
So the desktop uses "sRGB" and iPhoto uses "sRGB". Even worse,
Photoshop 7 wants to use sRGB and
depending on your configuration, it may automatically do a rather
disastrous conversion:
P it opens the picture with an embedded sRGB profile (instead of the
profile of your input device)
and converts it to your working space, e.g. Adobe RGB 1998, with the
result that your picture is
oversaturated and possibly gets a color cast, the color space is shrunk.
Photoshop does no conversion in that case -- it's just assigning the
profile that the camera vendor said to associate with the image data.
If you don't think your camera is really sRGB (and none of them are),
then please complain to the camera manufacturer.
Again, this does not harm your data - it just mislabels it because
the camera manufacturer mislabeled it.
If you assign the correct profile for your camera, all is fine.
The only possibility for damage is if you automatically convert to
your working space -- and the possibility for damage ALWAYS exists
that way. Set it to "ask".
As for not having an embedded profile - that is true.
But there are several other places in the image file that can specify
the name of a profile that should be associated with the image. The
most common of these is the EXIF data embedded by all consumer
digital cameras. And almost all EXIF compliant digital cameras say
that the image is sRGB (when it really isn't). Again, this is the
fault of the camera manufacturer.
Chris
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