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Article #443Re: Banding Issues with GeForce 8800
From: Neil_Keller
Date: Sat, 21 Feb 2009 01:14
Date: Sat, 21 Feb 2009 01:14
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Well, one thing I notice is that attempting to open the linked .png in Photoshop, it has an embedded "SyncMaster" profile. Opening it in Photoshop CS4, maintaining that profile, I see banding (although very subtle in the second (bottom) example). The top example exhibits a stippled effect at the band edges at 100% scale. Opening it and converting it to Adobe RGB 1998, I see almost no sign of banding in that example. Opening it as is in Preview, I see the banding again. Creating a new radial gradient in Photoshop CS4, 1300 pixels wide, #666666 to #000000, at 100% scale, it is a smooth transition with a bare hint of banding. Also, my #666666 is noticeably lighter than in your example. Offhand, I'm not sure which factors affect your workflow. But I doubt it is your video card unless it is set for, say 16 bit or 8 bit... Neil
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X-Google-Thread: 1effee,7dc56f452fa952fb X-Google-Attributes: gid1effee,domainid0,public,usenet X-Google-Language: ENGLISH,ASCII-7-bit From: Neil_Keller@adobeforums.com Path: arc1-ca.pugleaf.net!g2news2.google.com!news2.google.com!newshub.sdsu.edu!webcrossing Newsgroups: adobe.creative.suite.mac Subject: Re: Banding Issues with GeForce 8800 Message-ID: <59b7fc33.17@webcrossing.la2eafNXanI> Date: Fri, 20 Feb 2009 17:14:08 -0800 References: <59b7fc33.-1@webcrossing.la2eafNXanI> Lines: 21 MIME-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 8bit