most recent 30 from http://www.editinggeeks.com 2010-07-30T13:18:45Z http://www.editinggeeks.com/feeds/question/29 http://www.creativecommons.org/licenses/by-nc/2.5/rdf http://www.editinggeeks.com/questions/29/is-it-possible-to-limit-how-many-shades-of-gray-are-in-a-grayscale-image scraper 2009-10-21T19:56:28Z 2010-07-19T14:23:07Z

<p>I am using photoshop and I would like to know if there is a way to control the number of shades in a gray in the image? I want to create an image that has 32 shades of gray (i.e. 0, 7, 15, ..., 255). </p>

http://www.editinggeeks.com/questions/29/is-it-possible-to-limit-how-many-shades-of-gray-are-in-a-grayscale-image/47#47 Larry 2009-10-26T02:07:00Z 2009-10-26T02:07:00Z

<ol> <li>Open a grayscale image or convert existing image to grayscale (Ctrl + Shift + U)</li> <li>File > Save As...</li> <li>Choose to save the image as a gif</li> <li>When the Indexed Colors window pops up (see image below) <ul> <li>set the palette to 'Uniform'</li> <li>set the number of colors to a power of 2 (32, 64, etc...)</li> </ul></li> <li>If you want edit the image, close it, then re-open it. Photoshop will only let you use valid colors while editing.</li> </ol> <p><img src="http://i33.tinypic.com/3313sz4.jpg" alt="Indexed Color Dialog" /></p>