Justin Thyme wrote:
"George Preddy" wrote in message
om...

3MP Bayer image (0.75 Foveon MPs)
http://www.pbase.com/image/30338213/original

3MP Foveon image (13.72 Bayer MPs)
http://www.pbase.com/image/23256593/original


Yup, you proved that the Sigma takes a significantly better photo than a
compact P&S that (in Australia at least) costs 1/6th the price of the Sigma.

What it shows is that a small-sensor digicam will produce results which
are dominated by noise if you run it at high iso. The image at:

http://www.pbase.com/image/30968764/original

was taken with a similarly cheap compact P&S. It's by no means a
technically flawless shot but it's in a different league to the
Sony picture George referenced.

The picture of the SD9 contains a useful illustration of why blur
filters should be used even when sampling with full colour at each
location. Simply view the picture at 50% with an application that
does not do proper antialiasing for generating such a view (eg GIMP) -
artifacts are very visible in the filter threads. Similarly my
own picture shows a mess of artifacts at 25%

- Len