Philip Pemberton wrote: > I'm wondering what's involved in density measurement... though to be > fair, I still have an XRite 890 autoscan densitometer for that. Just > can't do spot readings with it... :-/ You need to meet the spectral filter requirements of whatever status you are trying to measure. With a spectrometer, the filter shape can be anything you want. With the 1005, the LED's would have to be at wavelengths to match the desired filter characteristics. > Though I'm curious - what are you using instead of libusb? The native API's + libusb-win32 system driver for MSWin. I've simply cut out the middle man. Graeme Gill.