Re: dpi vs ppi
Re: dpi vs ppi
- Subject: Re: dpi vs ppi
- From: "Terence L. Wyse" <email@hidden>
- Date: Mon, 17 May 2004 10:13:02 -0400
I've got the SD-9 w/ Foveon sensor and all I can tell is that the thing
is amazingly sharp and has virtually no "interference" moiri typically
of the kind seen in fabrics unlike what I've seen with the Bayer
sensors. As you enlarge these images (I've gone 180dpi with no issues)
they simply tend to get soft and eventually you'll start to see the
pixels themselves but it's never revealed any sensor artifacts.
Personally, I think if Sigma/Foveon were to come up with a 6-8 mp
sensor, they'd own the world but that's just coming from a very pleased
Sigma/Foveon end-user! Downside to the sensor? It seems to struggle a
bit with yellow, rendering a sort of greenish-yellow fleshtone that is
disturbing but relatively easy to correct.
Cheers,
Terry
On May 17, 2004, at 5:42 AM, Bob Rushing wrote:
Has anyone been able to see a comparison between the Sigma camera
using the Fovian sensor. Sigma advertises an image sensor somewhere
from 3 to 4 megapixels But this is the array size because each pixel
counts for an individual R, G nd B because they line up vertically.
Now the Bayer CCD is a checkerboard like array that my Kodak has. In
the highest resolution - which I very rarely use is something like
13.7 megapixels. So I'm wondering; does the Sigma send 3 bytes of data
for each advertised pixel due to the image sensor design whereas the
Kodak sends one byte for each pixel?
_____________________________
WyseConsul
Color Management Consulting
email@hidden
704.843.0858
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