Re: Photoshop 7 lies?
Re: Photoshop 7 lies?
- Subject: Re: Photoshop 7 lies?
- From: Doug Broussard <email@hidden>
- Date: Wed, 10 Jul 2002 00:01:59 -0700
on 7/9/02 7:58 PM, email@hidden at
email@hidden exposited thusly:
>
Forgive me if this have been covered, and it probably has.
We did cover this a while back - but here's the executive summary:
Photoshop 7 honors EXIF information (the info your camera writes to the
file) the same as it would an ICC tag in the file. I wish I could turn this
off, and so do you.
even if your camera writes no ICC tag to the file, Photoshop thinks the file
is in an sRGB color space because of the EXIF tag that indicates the file
should be viewed in this color space. I can't disable EXIF on my camera when
I use jpeg mode. This leads to headaches and a blizzard of annoying dialog
boxes when I try to look at a Microdrive worth of photographs.
This sRGB EXIF tag is part of the printer image management (PIM) initiative
that Epson began awhile back and that everyone from Nikon to Adobe seems to
be gung-ho for. Essentially, digital camera image workflow is being
shoehorned into an sRGB sized-box so that Joe Motorhome can get relatively
accurate prints on his home inkjet printer. Professionals get
inconvenienced in the meantime.
Photoshop 6 didn't honor EXIF information, so no dialog box about sRGB with
that software. It's making me wish there was a Carbon version of PS6!
Normally, I just convert right into my working space for photographs (Joseph
Holmes' EktaSpace). Discarding the 'profile' (which isn't really a profile
at all) tends to lead to really nuclear-looking files - at least from my
Nikon E5000.
>
>
I seem to remember something like this happening with iPhoto. Doesn't
>
it assume an sRGB space? Why is PS7 doing it? It is seeing some info
>
that PS 6 couldn't, or is it just making an assumption based on
>
missing data? Obviously, I can get around it, but it's at least one
>
more step for each image. I guess I could use one of the Applescripts
>
to embed my working space in all my fresh images, but anyway, what
>
the... ???
Iphoto is lacking in this respect. It's annoying to me that Apple did not
build in any discernable color management to iphoto - but at least 1.1.1
displays EXIF tags. Unfortunately, the user can't turn off or strip EXIF
tags without an AppleScript.
As far as I can tell iphoto doesn't honor color space information at all
when displaying or printing, aside from letting the user know that a file is
tagged with or has been saved with the intent (EXIF) of a particular color
space. If I'm mistaken in this assumption, I'd love to be set straight or
told what I'm doing wrong.
Perhaps this is a feature left out of iPhoto on purpose, to urge users to
more professional-level applications for color managed image database
applications.
-D
--
Doug Broussard
Instructor, PhotoClassroom
http://www.photoclassroom.com
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