Re: filmscanners: film vs. digital cameras - wedding/commercial photography

[Johnny Deadman]

on 8/17/01 6:00 PM, Soren Svensson (EUS) at [EMAIL PROTECTED]
wrote:

>> From: Austin Franklin [mailto:[EMAIL PROTECTED]]
>> 
>>> So from a photographic perspective, a Pixel, is the whole Quad -
>> 
>> I certainly disagree with that...
> 
> Well, I agree with it.
> 
> Lets see this from a basic perspective. Image a chip with just 4 sensors, two
> green, one red and one blue.
> 
> A camera manufacturer (and you I assume) would see this as a 4 pixel chip.
> 
> I (and Karl I guess) would see it as a 1 pixel chip. Anything else is a lie.

well, it is contributing 4 data points about luminance and 1 about
chrominance. Since luminance information is more critical than chrominance
that makes it worth (to me) rather more than 1 pixel and somewhat less than
4.

the problem with this stuff is that people look at the numbers and say
'blimey, my scanner will produce a 20 Mpx file from 35mm" and do a mental
comparison which is completely invalid.

-- 
John Brownlow

http://www.pinkheadedbug.com

ICQ: 109343205