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[filmscanners] RE: Profiles



Thanks Tony.
If I get your point correctly, you claim that monitors cannot display wider
gamut then ordinary sRGB regardless of particular display qualities, which
mean, there is no point to scan and save in Adobe 98 RGB which is wider and
thus resulting in larger files.
Am I wrong ?

What about scanning for archive ? I would consider creating image archive
from my good and best images which are potentially can be printed in large
sizes in the future if needed.
Should I save them in wider then sRGB space like Adobe 98 RGB one or even in
this case sRGB is fine ?

Regards,
Alex Z

-----Original Message-----
From: filmscanners_owner@halftone.co.uk
[mailto:filmscanners_owner@halftone.co.uk]On Behalf Of
TonySleep@halftone.co.uk
Sent: Friday, April 19, 2002 4:36 AM
To: alexz@zoran.co.il
Subject: [filmscanners] Re: Profiles


On Fri, 19 Apr 2002 00:00:00 +0200  Alex Zabrovsky (alexz@zoran.co.il)
wrote:

> BTW, I compared the monitor's ICC profiles: one supplied with the monitor
> while another is created through Adobe Gamma utility.
> They seem not to alter the color interpretation of the pictures
> (I compared them using Assign Profile in Photoshop with Preview switched
> on
> going back and forth between monitor's ICC profile,
> my manually created profile, Adobe 98 RGB and sRGB.
> The only difference I noticed between these is in brightness which
> apparently relates to Gamma.

If your monitor is half-decent and came with a reasonably good profile, you
are unlikely to see much if any difference using the Adobe Gamma custom
profile, apart from overall gamma if you've set a non-native gamma in AG
(eg 1.8 for colourspaces which require it).

As for Adobe 98 vs sRGB, monitor space is sRGB, that's all a monitor can
display, and alternating these profiles only alters the way in which PS
maps the image values to working space to monitor space. You cannot ever
see the extra gamut of Adobe98, because the monitor phosphors can't
physically show it, sRGB (-ish) is the best they can do. And and of course
the image itself may not include any colours which require it. If the whole
image gamut fits within sRGB anyway, Adobe 98 is a waste of space [bad
pun].

Regards

Tony Sleep
http://www.halftone.co.uk - Online portfolio & exhibit; + film scanner info
& comparisons
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