Digital BW, The Print

In a message dated 12/15/2004 9:31:43 AM Pacific Standard Time,  
DigitalBlackandWhiteThePrint@yahoogroups.com writes:

Subject:  Re: Black and white only digital camera


I agree. I have never been  overly convinced that a monochrome 6 
megapixil sensor would be noticably  sharper than an RGB-bayer-pattern 
6 megapixil sensor. The interpolation  that occurs for RGB sensors is 
performed to maintain color accuracy, and  shouldn't have a 
significant effect on sharpness. I.e., the effect might  be 
measurable, but I'll bet not  visible.

...Ben



Not true. Even Dr. Bayer, the inventor of the method that's used in all  
modern monnochip cameras (except the Foveon) says that the GREEN channel is used  
for the luminance/sharpness information, so a 6 Megapixel Color camera is 
really  only 3 for B&W. The Foveon is 3.5, but wait, there is NO Anti Aliasing  
filter to fuzzy things up to 1/2 to 1 additional pixel, making the 6 Mpx Bayer  
camera about a 1.5 Megapixel in terms of real sharpness vs. the Foveon's 3.5 
(2  1/3 times better, yes). BTW the Foveon/Sigma SD-10 interpolates to a 14  
Megapixel file in the RAW software, which Rivals the Canon 11 Megapixel and the  
Kodak 13.5 Megapixel in terms of B&W performance.
 
Claude


[Non-text portions of this message have been removed]

IIRC, that refers to our eyes, not the digital sensor.

I have enjoyed this discussion, but have lost track of why this 
colorblind person want's a monochrome digital camera.

What is it about a color camera that a monochrome one will "fix" for 
colorblind users?

john

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, claudej1@a... 
wrote:

> Not true. Even Dr. Bayer, the inventor of the method that's used in 
all  
> modern monnochip cameras (except the Foveon) says that the GREEN 
channel is used  
> for the luminance/sharpness information,

> From: John M. [mailto:moodymz3@...]
> 
> I have enjoyed this discussion, but have lost track of why this 
> colorblind person want's a monochrome digital camera.
> 
> What is it about a color camera that a monochrome one will "fix" for 
> colorblind users?

Only that it will be a tad sharper, I think.

-- 

Ciao,               Paul D. DeRocco
Paul                mailto:pderocco@...

John M. wrote:
> 
> IIRC, that refers to our eyes, not the digital sensor.
> 
> I have enjoyed this discussion, but have lost track of why this 
> colorblind person want's a monochrome digital camera.
> 
> What is it about a color camera that a monochrome one will "fix" for 
> colorblind users?
> 

I think they know that with colour photos, the colours would appear 
wrong, to a non colour blind person, perhaps the traditional method, has 
been to simply load up the film camera with b&w film, and be done with it.

Perhaps the new solution, is to shoot in colour, then use the 
hue/saturation adjustments, set the saturation to -100% and play with 
the hue/lightness settings until happy with the result.

W

No it won't.  

Actually all they have to do is always shoot in B&W mode.  Still 
kind of silly since there will ALWAYS be the time someone will 
offer,"Too bad it's not in color; it would be great."

Seth


> > From: John M. [mailto:moodymz3@y...]
> > 
> > I have enjoyed this discussion, but have lost track of why this 
> > colorblind person want's a monochrome digital camera.
> > 
> > What is it about a color camera that a monochrome one will "fix" 
for 

> > colorblind users?
> 
> Only that it will be a tad sharper, I think.
>

> From: Seth Rossman [mailto:seth@...]
> 
> No it won't.  

Yes it will. Other messages in this thread have detailed why.

-- 

Ciao,               Paul D. DeRocco
Paul                mailto:pderocco@...