Digital BW, The Print

dlruckus wrote:
>  If it is a white Led, some do have a continuous spectrum. Nichea Co.
> makes them for instance. 
>  If it is a Led array, it is also possible to cover the full spectrum
> given appropriate #s of color points,appropriate half bandwidths,
> techniques of multiples on at same time, and possibly manipulating
> multiple Led power outputs. It's not all that difficult to emulate
> some of the well known instruments as even they only sample slices of
> the spectrum and interpolate the rest in many cases. 
>  There is a great deal of activity going on in this area these days as
> witness the last few years patent literature on the topic. The gap
> between spectros,colorimeters etc is closing rapidly.
>  Even the Colorvision instrument(Datacolor 2005 I think?) seems to
> work well at it's task and it, if one of CD Tobys early comments when
> it was introduced is accurate, uses a rather small # of Leds(6 I think
> was mentioned).
> 
> Regards
> Duane


Makes me wonder why they more or less state that it consists 
of Eye One parts. Using LEDs and possibly not a full spectrum 
is quite a depart from the original Eye One Spectrometer. If 
it is more a colorimeter then the price could be much lower. 
Whatever white LED even based on 3 RGB LEDs internally and 
with the best fluorescents added to fill the spectrum line, it 
still will have a less continuous spectrum than a Xenon flash 
as used in my Spectrocam. And I also wonder how consistent a 
complicated lamp like that will be in time.

The information I gathered from several reviews so far 
indicates that it is UV filtered. Isn't strip reading but 
measures per patch. Measures the darker patches longer for 
better results. Compensates the readings on "wet" targets for 
at least the HP media in the software. Given the care in those 
details one may expect that they made the right decisions on 
the lamp too.

Ernst
                    --
           Ernst Dinkla


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