Digital BW, The Print

I think you could possible use CMY but not K.  How can one collect 'black' with
a sensor?  You're thinking in 4 color ink reproduction and not light waves.  And
I think the reason they use RGB is that it's tranmissive and not reflective
(would that be additive and not subtractive?)....

Harvey Ferdschneider
partner, SKID Photography, NYC

Austin Franklin wrote:

>  Hi Tim,
>
> I haven't really thought about that.  Obviously, you'd have to do color
> space conversion.  I remember a web article that outlined using CMYK, but it
> really doesn't give any detailed explanation:
>
> http://www.digitalcameras.com/howTheyWork2.asp
>
> I wish I knew more...and it is an interesting question.  I have a friend who
> is designing some consumer level digicams, and I'm sure he has people who
> work with him who could possibly answer that question, so I'll ask him.
>
> If you find out anything, I'd like to know!  What I would do, is make a
> filter/lense that is a quad prism that takes ALL the info for that 2x2 area
> and gives it to each sensor...that way there is NO interpolating, and you
> have TRUE color information...but then you get 1/4th the number of "pixels"
> (I use that term loosely here ;-) that the cameras that use interpolation,
> give you.
>
> Regards,
>
> Austin
>
>
> > -----Original Message-----
> > From: Tim Spragens [mailto:t.spragens@...]
> > Sent: Saturday, January 19, 2002 1:32 PM
> > To: dIgitalblackandwhitetheprint@yahoogroups.com
> > Subject: RE: [Digital BW] Shooting Digitally, for Austin
> >
> >
> > Austin,
> >
> > can you explain why more companies aren't using CMYK filters instead
> > of RGBG for single-chip cameras? Seems like there would be less light
> > loss, and it would avoid the redundant G.
> >
> > Tim
> >
> >
> > > The other issue that comes into play, is these one shot cameras aren't
> > > really true pixels...they interpolate the color data, which makes them
> > > really require 4x the number of sensors to give you TRUE color data.
> > --
> > Tim Spragens
> > http://www.borderless-photos.com
> > &
> > http://www.borderless-photos.de
>
>
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