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Article #366Re: Difference between brightness and exposure?
From: Rags Gardner
Date: Fri, 27 Aug 2004 04:20
Date: Fri, 27 Aug 2004 04:20
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Mike, I know that I risk being severly chastized for chiming in, but this "linear space" also had me confused. I believe: I have also seen recent discussions about adjusting tonal information from camera raw image files in a "linear space". This terminology is a little confusing. I think that the "linear space" these discussions are making reference to is based on the fact that the raw color channels are not encoded as tones. They are encoded with normalized sensor voltage values. They are linear with respect to the voltage (amount of light) detected at the sensor elements. These do need gamma correction and demosaicing to create the RGB tones. I'm just trying to help. I could be totally wrong.
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X-Google-Thread: 16edff,bd7ba78462ed4802 X-Google-Attributes: gid16edff,public X-Google-Language: ENGLISH,ASCII-7-bit From: "Rags Gardner" <rags@compuserve.com> Path: arc1-ca.pugleaf.net!g2news1.google.com!news1.google.com!news.glorb.com!fr.ip.ndsoftware.net!newsfeed.freenet.de!easynews.net!easynet-isham!easynet.net!newsfeed01.sul.t-online.de!t-online.de!webx Newsgroups: adobe.photoshop.camera.raw.plugin.windows Subject: Re: Difference between brightness and exposure? Message-ID: <3bb4e545.38@webx.la2eafNXanI> Date: Thu, 26 Aug 2004 21:20:27 -0700 References: <3bb4e545.-1@webx.la2eafNXanI> Lines: 15 MIME-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 8bit