Reading this made me appreciate again the specialness of the human eye.
One sensor for b&w and movement, and another for full spectrum color.
Wonder what it would cost to manufacture, and how big it would be if
manmade?
Gregg
Phillip Franklin wrote:
>
> Tim Hughes wrote:
> "Does anybody know if the current cameras quote pixels in terms of RGB
> pixels
> or "full spectrum" pixels? Maybe current specs are for RGB pixels not
> full spectrum."
>
><snip>
It's not the size of the chip nor the pixel density that produces good
color. It's the quality of the design of the ccd array. There are many
other factors to consider such
> as digital noise, power consumption and data transfer rates. Creating a
> large ccd is really not that important. Right now the Kodak DCS660
> (Nikon Body) or the DCS560 (Canon Body) can produce a 6 mega pixel image
> from it's 3 ccd (3040x2008) design which comes out to a 18 mb file. Of
> course this camera costs around $25,000. The reason it is so expensive
> is not it's ccd size. It is it's ability to capture at a data rate
> necessary to make this an effective tool for modern photography. It can
> capture images at 1 frame per second with a 3 frame burst rate. The
> electronics & power requirements design along with the features required
> make this an expensive device to manufacture. As the image capture area
> enlarges the problem of data transfer rates become a serious issue along
> with reasonable portable power requirements. It is the opinion of most
> industry observers that these data transfer rates & power requirements
> will determine the design of the ccd array and capture size area.
> Certainly as we see improvements is wafer manufacturing we will see more
> dense and powerful chips, not bigger chips. Larger & faster data buses
> along with lowered power requirements due to the smaller more dense
> chips will be the solution for newer ccd cameras. Bigger sized chips
> would be going backwards. So waiting for a chip size that would be equal
> in physical size to a 35 mm image area may not be the future of hand
> help ccd cameras. Some experts feel that lens design will eventually
> change to take on this new format. So who knows? Olympus may redesign
> a series of lenses to accommodate a standard sized ccd array when a
> standard becomes a reality. Right now I think the industry is at a
> cross roads where the analog standards are starting to give way to
> digital standards ( which basically says smaller is better and less
> power requirements equal faster performance). Performance is Everything
> not old standards. Why use a new modern tool if it can't perform as
> good as the older tool?
>
> Phillip Franklin
>
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