Re: Sell me your useless film cameras

[Robert Gonzalez]

That is incorrect.  There are only 3Mp in green, 1.5Mp in Red, 1.5Mp in 
Blue.  They are interpolated to create 6Mp in RGB.  That is why Foveon 
claims that they actually have a "9Mp" camera, because they have 3Mp in 
red, 3Mp in Green, and 3Mp in blue.  This is a slight exaggeration, but 
goes along with the marketing hype of Bayer sensor cameras.

J. C. O'Connell wrote:
Are you saying that each of the 2000X3000 pixels
in a typical 6mP image are not independent true color pixels?
I believe they are and there are a red, blue, and 2 greens sensors
for each of them for a total of 24mP
JCO
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   J.C. O'Connell   mailto:[EMAIL PROTECTED]   http://jcoconnell.com
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-----Original Message-----
From: John Francis [mailto:[EMAIL PROTECTED]
Sent: Tuesday, October 21, 2003 3:19 PM
To: [EMAIL PROTECTED]
Subject: Re: Sell me your useless film cameras



nope a 6Mp camera has 24M sensors not 1.5M
jco


Wrong again.
And in any case we weren't discussing the way marketing
counts each sensor as a pixel, even though it only senses
one colour component.
I was merely pointing out that the usual Bayer array has a
cell of four pixels, so the breakdown from th "6MP" cameras
such as the *ist-D, D100 and 10D is not evenly divided into
2M sensors of each colour, but instead is 50% G, 25% R, 25% B.


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  J.C. O'Connell   mailto:[EMAIL PROTECTED]   http://jcoconnell.com
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-----Original Message-----
From: John Francis [mailto:[EMAIL PROTECTED]
Sent: Tuesday, October 21, 2003 12:24 PM
To: [EMAIL PROTECTED]
Subject: Re: Sell me your useless film cameras


well, i suppose, for printing uncropped images at 8x10,
6M of RGB pixels is as goot as it gets. but i don't
now any digicam capable of that. yet.
Not yet.  The Foveon sensor in the Sigma XD-9 is only 3MP


6MP digicam has exactly 2M of pixels of each color
Not even that.  It's usually 1.5M R & B, 3M G