(note that I *intentionally* dim the lighting when I take the measurements. Not pitch black, but quite dim. I've been toying with the idea of using a light to light up the target & colorimeter during placement, and turning it off during the measurement. I guess the PC monitor could be used as the illuminant, really) -----Original Message----- From: argyllcms-bounce@xxxxxxxxxxxxx [mailto:argyllcms-bounce@xxxxxxxxxxxxx] On Behalf Of Greg Sullivan Sent: Friday, 7 October 2005 23:19 To: argyllcms@xxxxxxxxxxxxx Subject: [argyllcms] Re: using a digital camera as a colorimeter Alastair wrote: > Indeed - it really depends what you're trying to achieve. 300 patches > is more than enough for pleasing photographic output, providing your > printer driver is "well-behaved". With colour adjustments disabled, > Gutenprint seems to fit this description very well... Ok. (I'm using the Epson ill-behaved RGB driver. :) I don't know anything about Gutenprint yet - I'd love to have a method of bypassing the Epson driver without having to fork out lots of money - if Gutenprint provides a very simple "RIP" I'm interested to learn about it....... > I took me about 15 minutes last night to measure 144 patches, pressing > the button each time, and with patches just under 12mm square. The > light in my office isn't good enough to use auto-pickup mode... FWIW, I find it trivially easy to place the puck when the patches are printed in random order, with very dim lighting. I have set the inter-patch time to one second. Greg.