Mike Hall said:
Hi, all!
I'm wondering if someone out there has tried the Nikon Coolscan V ED
on a USB 1.1 connection, instead of USB 2.0. Does the much slower USB 1.1
speed slow down the scan+transfer speed that much?
Thanks for any tips.
I'm using it on USB 1.1. Here are the timings I get for a whole 35mm
slide or negative.
2000 dpi Vuescan 1 min 06 sec. 2000 dpi NikonScan 3 min 22 sec.
4000 dpi Vuescan 3 min 43 sec. 4000 dpi NikonScan 4 min 04 sec.
For VueScan, those times include saving a 64bitRGBI raw file output
with scan and running IR cleaning while scanning. For NikonScan, I was
using ICE but not GEM or ROC. (GEM nearly doubles the time for
NikonScan).
I think the significance of USB2.0 versus 1.1 is overrated marketing
hype. On 35mm film, the speed is not limited by the data transfer rate
but by the speed the scan motor moves the scan head and also by the
capacity of your PC to handle any post processing done by the scanning
software. In other words, there is nothing that is sitting waiting for
data transfer, even if it is the "slow" USB 1.1. The speed of the
scanning software, I believe, depends largely on how much RAM you have
rather than the CPU speed or the transfer speed. I have 384MB, which
is the maximum my motherboard can support. I'm on W98SE.
