Digital BW, The Print

yes, but each film responds to different colors differently and with 
a CCD you get to choose (with all the inherent losses etc... I am not 
arguing on that score) which makes it much more flexible in your b&w 
rendition options.

As to film vs. digital for b&w I have gone back to shooting film... 
but that is more because I have some film cameras that I prefer to 
the available digitals.

mark

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, Truman Prevatt 
<tprevatt@m...> wrote:
> Black and white photography is about intensity - it throws away 
> frequency on purpose.  That's why we do it, if I cared about 
frequency, 
> I do color. However, a red filter (or green filter) change the gray 
> scale by changing the power to the sensor.
> 
> Truman
> 
> Clive Moss wrote:
> 
> >
> > ...
> > Consider another experiment. The image being recorded consists of 
two
> > halves -- one red, one green. The intensity of each half just 
happens to
> > be such the the power sensed by the B&W CCD or film being tested 
is the
> > same for each half. The resulting image will be an even shade of 
grey.
> > Information has been lost, because the sensor throws away all
> > information regarding the frequency of the photons. The RGB 
filter also
> > loses some of the frequency related information -- but not all of 
it.
> >
> > The information that the eye/brain needs to process an image 
includes
> > both power and frequency. The RGB filter loses some information 
related
> > to the total power over a given area -- but in return it gains 
some
> > information related to the frequency (color). A pure B&W capture 
loses
> > almost all information related to frequency -- the more so if the 
sensor
> > has flat response across the spectrum.
> > -- 
> > Clive
> > http://clive.moss.net
> >
> 
> -- 
> 
> We imitate our masters only because we are not yet masters 
ourselves, 
> and only
> 
> because in doing so we learn the truth about what cannot be 
imitated.
> 
>  
> 
> 
> 
> [Non-text portions of this message have been removed]