Archived posting to the Leica Users Group, 2012/03/15

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Subject: [Leica] B&W Leica?
From: Frank.Dernie at btinternet.com (Frank Dernie)
Date: Thu, 15 Mar 2012 07:22:53 +0000
References: <380-220123314222851536@M2W105.mail2web.com>

Which 2/3 Doug?
I understand the increase in sensitivity without the Bayer filter. I don't 
understand why every pixel wouldn't still be used for the luminance data. 
I.e. I get the loss of sensitivity to which you refer, but not the loss of 
resolution. What am I missing?
cheers,
Frank

On 14 Mar, 2012, at 22:28, wildlightphoto at earthlink.net wrote:

> Sonny Carter wrote:
> 
>>>> 
> On Wed, Mar 14, 2012 at 4:27 PM, wildlightphoto at earthlink.net <
> wildlightphoto at earthlink.net> wrote:
> 
>> To get B&W from an RGB digital camera you throw away 2/3 of the image
> data.
>> A B&W-only camera could be much more sensitive (higher ISO) and higher
>> resolution.
> 
> Um, if you change the mode to BW, that is true, but if you simply
> desaturate the image, the file stays the same size, and I presume all the
> information remains.
> <<<
> 
> And 2/3 of it is duplicate data, same as throwing it away.
> 
> Doug Herr
> Birdman of Sacramento
> http://www.wildlightphoto.com
> 
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Replies: Reply from richard at richardmanphoto.com (Richard Man) ([Leica] B&W Leica?)
In reply to: Message from wildlightphoto at earthlink.net (wildlightphoto at earthlink.net) ([Leica] B&W Leica?)