| Question on bit depth and Cosmigo Pro Motion
 
 Printed From: Pixel Joint
 Category:  The Lounge
 Forum Name:  Resources and Support
 Forum Discription:  Help your fellow pixel artists out with links to good tutorials, other forums, software, fonts, etc. Bugs and support issues should go here as well.
 URL: https://pixeljoint.com/forum/forum_posts.asp?TID=25726
 Printed Date: 30 October 2025 at 7:28pm
 
 
 Topic: Question on bit depth and Cosmigo Pro Motion
 Posted By: SynPDX
 Subject: Question on bit depth and Cosmigo Pro Motion
 Date Posted: 27 April 2017 at 9:03pm
 
 
        
          | So I bought a book to learn more about pixel art. Just a warning, I am an EXTREME beginner, but pixel art fascinates the heck out of me and I'd really like to become good at this new hobby. So, back to my point. I bought this:
 
 https://www.amazon.com/Pixel-Game-Developers-Daniel-Silber/dp/1482252309/ref=sr_1_1?ie=UTF8&qid=1493179049&sr=8-1&keywords=pixel+art+for+game+developers - https://www.amazon.com/Pixel-Game-Developers-Daniel-Silber/dp/1482252309/ref=sr_1_1?ie=UTF8&qid=1493179049&sr=8-1&keywords=pixel+art+for+game+developers
 
 My question might be basic, but it's this:
 http://imgur.com/a/jDqQl
 This picture I took from the book is referring to Graphics Gale, I decided based on some research that I would like to go with Pro Motion. To my question: Note near the bottom of the page, the book instructs the reader to create a new file and choose a 4bit color depth to restrict the colors to 8.
 When I try to do this in Cosmigo Pro Motion, the software wants to restrict color depth on a per-channel basis.
 Here is what I get in Pro Motion:
 http://imgur.com/a/xy9V0
 Note that when I set the bit to 2 on each channel, I still get quite a few colors.... How do I restrict to 8 colors, or, maybe I should ask this way, "how do I set the bit depth to 4 'globally' and not on a per-channel basis"
 I hope I'm conveying my question properly here...
 Thanks ahead of time!
 |  
 
 Replies:
 Posted By: surt
 Date Posted: 28 April 2017 at 12:41am
 
 
        
          | 4-bit is 2^4 colours so sixteen. Pro Motion only supports 256 colour palettes.
 The channel bit depth limits affect the size of the colour space that you get your palette values from.
 If you want to limit yourself to sixteen colours, just don't use more than sixteen, or one row of the palette.
 The only disadvantage is that you can only fit one pixel in each byte rather than two (ignoring compression), but I imagine your storage isn't so tight that it'll be a problem.
 EDIT:
 Ignore that last sentence. I tested saving a 16 colour PNG in Pro Motion and opening in Graphics Gale it shows a 16 colour rather than 256 colour.
 
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