[sane-devel] bubblegum colours from Umax Astra 600S

[Oliver Rauch]

Please enable debug output of the backend by setting the environment
variable SANE_DEBUG_UMAX to 12, then do a preview and a real scan and
the the debug output to me (not to the list).

Oliver

Am Die, 2005-01-04 um 18.46 schrieb Robert Persson:
> I am having trouble with the quality of scans from a Umax Astra 600S and would 
> be very grateful if anybody could tell me:
> (a) how to solve the problem
> (b) whether I can be confident that I won't have the same problem if I buy a 
> new budget-priced scanner that is supposed to be supported in Sane.
> 
> The scanner is connected to a Power Mac 8600 running Ubuntu Warty.
> 
> The problem is that, while the previews look OK (or perhaps a little dark) the 
> scans are way too bright, to the point of being washed out.  The discrepancy 
> between the preview and the scan is so great that, in order to get a 
> tolerably accurate scan the preview has to be darkened until it is too black 
> to see.
> 
> The problem is definitely with the backend because I can reproduce it when I 
> scan over the network into Photoshop running on my wife's OS X Powerbook.
> 
> The problem does not occur when using Umax's own drivers in Mac OS 9.  In 
> other words the colours of the preview are the same as the colours of the 
> scan.
> 
> Many thanks
> Robert
> -- 
> Pigsh*t is the new bullsh*t.