How large of an image can I process with Power Mask?
Posted by Peter Moyer on 04 January 2008 12:23 AM
With your Photoshop Edit > Preferences > Memory & Image Cache > Maximum Used by Photoshop set to to 55% for Windows and 70% for Macintosh, you can use Power Mask with the following image sizes:

 System Ram
 Image Size
 1.0 GB
 8 megapixels
 1.5 GB
12 megapixels
 2.0 GB
16 megapixels

16 bit images will require slightly more memory.
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