Digital BW, The Print

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "John Moody" 
<moodymz3@y...> wrote:
>
> They call it a spectro device, but it uses LEDs; so who knows what 
it really
> is.  I guess there are two units as well; the pro version has a 
different
> device that also uses LEDs.  It does not sound like something that 
measures
> the spectrum every 10nm though.  Maybe koloshor has some thoughts 
on this.
> It probably does not follow the 45/0 degree standard either, but if 
it makes
> great profiles who cares?
> 


I'll tell you what I know of the old device. It was a ColorSavvy 
ColorMouse CM2C. The CM2C uses many LEDs to generate combinations of 
different color light, in a 45/0 pattern, but the light rotates 
around the center as it changes from one color to the next. There 
were two "banks" of opposed LEDs, so each bank would rotate through 
180 degrees. There was somewhere between 6 and 10 combinations of 
colors coming out of the device, so it definitely did not sample 
every 10nm. What I think it did was to sample a couple blue, a green, 
and a couple red illuminations, and form a Lab value from that 
combination. If you really need to know, I might be able to dig it 
out and count. And I'm pretty sure that the new device isn't much 
different, except that now it has a USB connection, and gets power 
from the USB. It also looks like it is bigger and bulkier, and they 
claim it is faster than before.

The more important things come out when you read the description on 
their web site! See my comments here: (I'm too lazy to type them 
again)
http://forums.dpreview.com/forums/read.asp?forum=1003&message=16546764

When I used the CM2C with ProfilerPro (2.x and 3.0), it was ugly! 
When I used the CM2C with Monaco Profiler 4.5, I got good results on 
paper with no OBA. Paper with OBA had a yellow cast to the prints. 
When I went to using an Xrite DTP22 Digital Swatchbook with Profiler, 
I got better results(still problems with OBA). When I went to using 
an i1 spectro with Profiler, I got different results from the DTP22 
(again still problems with OBA). When I went to Printopen, I could 
cancel the OBA in the software. Since I've upgraded to Profiler 4.8, 
I've been using a UV filtered spectro, so no problems with OBA with 
any software. Most of the above was making CMYK profiles for my RIP, 
maybe the ProfilerPro software worked better with RGB, maybe...

If you want to read my commennts about the Colorvision Spectro suite, 
do a search on DPReview for "colorvision spectro suite"