Image quality:

   As Andrey indicated, on typical color lasers and inkjets, you need 300 dots 
per final printed inch (~120 pixels/cm) for maximum quality .  A small 4"x3" 
illustration would need to be 1200x900 pixels ("ray 1200,900").  Full page 
11"x8.5" (ray "3300,2550").   

Since rendering those images takes forever and the files get really huge, I 
tend to trade quality for time and space, and stick with 150-200 pixels per 
inch (~60-75 pixels/cm) for draft/in-house printouts.

Cheers,
Warren

-
mailto:war...@sunesis.com
Warren L. DeLano, Ph.D.
Informatics Manager
Sunesis Pharmaceuticals, Inc.
341 Oyster Point Blvd.
S. San Francisco, CA 94080
(650)-266-3606  FAX:(650)-266-3501



> -----Original Message-----
> From: Andrey Khavryuchenko [mailto:akh...@kds.com.ua]
> Sent: Tuesday, April 30, 2002 9:30 AM
> To: Chris Rife
> Cc: pymol-users@lists.sourceforge.net
> Subject: [PyMOL] Re: image quality
> 
> 
> Chris,
> 
> "CR" == Chris Rife wrote:
> 
>  CR> I'm using Pymol to make some images for a paper and a 
> poster, and I've
>  CR> run across a problem. I can generate images that are 
> beautiful on my
>  CR> screen (when ray traced and then viewed as the png 
> file), but when I
>  CR> print them out they become extremely grainy. I've tried 
> viewing and
>  CR> printing from different programs, but with no luck. Any 
> suggestions?
> 
> Create image with high (I mean really High) resolution.  
> 
> Printers have much better resolution (at least 300dpi) and to 
> print your
> low-resolution screen image, they have to scale it.  So, the grains...
> 
> -- 
> Andrey V Khavryuchenko          http://www.kds.com.ua/
> Offshore Software Development
> 
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