----- Original Message -----
From: "Joe Gwinn" <joegwinn@xxxxxxxxxxx>
> >
> >I'm not in this field, if not the amplifer, not the sensor then what? So
far
> >I didn't see the 10D is sacrificing the resolution for noise, it's
> >resolution is better than E-1.
>
> I didn't mean the pixel size or number of pixels. By "tonal
> resolution" I mean the ability to differentiate shades of gray (in
> monochrome) without quantization noise or contours. In color, the
> individual tonal resolution of the three colors together is one
> component of color fidelity. The other component is the equations
> mapping input tricolor brightness values to output values. If these
> equations aren't right, the output will suffer.
>
May be we should come back to here again:
10D with Zuiko 35-70/3.6 at 35mm F8, ISO100 ~2.7MB.
http://www.accura.com.hk/IMG_8381.JPG
E1 14-54 at focal length simulate the hight of the above picture, F8 ISO100
~3MB.
http://www.accura.com.hk/P5150376.JPG
<snip>
> below that average. For instance, what were the exposure values
> (EVs) of the brightest spot and darkest spots in the scene?
>
Sorry, I didn't measure it.
> >All E-1 shots in my web site are JPEG, no color correction, only contrast
> >adjusted.
> >
> >http://www.accura.com.hk/OM/E1.htm
>
> The photos and the colors look very good. If you put the photos next
> to the originals, how accurately do the photos capture the colors of
> the real flowers? This was a classic test with film, and often
> showed that internal consistency or compatibility of the colors in an
> image was more important than scientific accuracy in making an
> appealing image.
>
By memory the colors are very close.
>
> I guess the test would be to photograph the same flowers (and
> buildings) using both methods, and compare the results. Why did you
> choose the one method for flowers and the other for buildings?
>
The flower shots were earlier one for general performance, color and OM lens
on E-1 test.
The building shots were for testing the RAW convertion function of Olympus
Viewer and how much I can gain with RAW on D-range. Unfortunately I got not
so good result, the Olympus Viewer is slow, whenever you change a setting
you have to wait for a few seconds for screen udpated (PhaseOne need less
than half a second) and I can only save less than 0.5 stop on the highlight
which was not impressive.
C.H.Ling
>
> Joe Gwinn
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