On Mon, 05 Dec 2005 11:56 , Tethys <sta296@astradyne.co.uk> sent:
>"Andrew Farnsworth" writes:
>
>>I am not a graphics or photo professional so there are probably nuances
>>I am not aware of but I would like to hear your oppinion on why SCSI is
>>better for scanners.
>
>Performance, and, errr, performance! The first is obvious. In my experience,
>SCSI scanners are faster. Secondly, though, they seem to impose a much lower
>overhead on the machine doing the scanning. Scanning via USB slows down the
>host machine much more than via SCSI, and this can be quite noticable on
>higher resolution scans.

Tet, and all other who replied,

This was helpful.  I mainly new most of it, but had not visited the subject in a long while.  It seems to me that for many users USB is fine but for the professional who spends much of their time scanning SCSI is better.  I recall that under SCSI it used to take a significant amount of time to get the scanner scanning while under USB it seems to start fairly quickly.  Note that I am comparing my SCSI scanner experience of 10 years ago with my USB scanner experience from last year.  I presume they have managed to improve the time it takes to start scanning under SCSI.

Andy


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