On 31 Mar 2004, Frits [ISO-8859-1] Wüthrich wrote: > I just ran a test and I can NOT confirm the USB2 speed for the *ist D > connected to a PC. > This is what I did: > I connected the *ist D with my PC by means of the Pentax supplied USB > cable, and copied all 15 RAW images that I had on the flash card to a > folder on a drive of my PC. > That took about 3 minutes and 30 seconds. > Then I removed the flash card and put it in a USB2 6 in 1 card reader, > and now using the same 15 images to copy to the same drive in another > folder, I found a time of 1 minute and 2 seconds. So the reader was 3.5 > times faster. > I have the firmware version 1.11 on my *ist D.
Having a USB 2.0 port in the camera doesn't mean that the camera is going to be as fast as a USB 2.0 reader. In particular the chipset for managing the compact flash card might not be as fast as reading as a USB 2.0 reader would be. Your test shows that the camera did about 0.92mbps over the USB cable. That is faster than most USB 1.1 readers, but I think still slower than the USB 1.1 available bandwidth (1.1mbps, but I don't know how much overhead is taken up by the system). If you have a USB 1.1 hub and plug in a USB 2.0 device you should get a popup from Windows XP which tells you that it woudl be faster to use a USB 2.0 high speed port. I haven't seen this popup with my *ist D, and used to see it all the time with my DSC-F717, so I think that the camera is USB 1.1. alex
