My conclusion was that the numbers are just a distraction! The subjective
results are what count for me. And that URL has a lot of good experimental
evidence.
Acer 2720 (2700 dpi) scans of a Velvia slide give me A4 (~8x11) prints on my
Epson 870 that my camera club can't tell from wet chemistry. But I'm sure A3
size would be a different story - I'd need Tom's 4000dpi scanner.
And an E-10 raw tiff file from CH Ling gave me a print that was almost as good
- but not quite. It was just one example, so I could be wrong.
So as with most new technology - wait for release 2.
br
jez
Please respond to olympus@xxxxxxxxxxxxxxx
To: olympus@xxxxxxxxxxxxxxx
cc: (bcc: Jez CUNNINGHAM/BE/ALCATEL)
Subject: Re: [OM] Scanner vs. E-10
Shouldn't it be that a 4 Megapixel scan is equivalent to a 16 megapixel camera
and
that an equivalent 3260 x 4472 pixel scan for 35mm would be 14.6 x 4 pixels
for an
equivalent 58.4 megapixel digital camera??
Mark H.
>
>
> Tom - it's worth saying it again, but pixel counting is hijacked by digital
> camera marketing
brochures! For digital cameras they count the total number of photosensitive
cells in the CCD - and
they are in groups of 4 with one for red, two for green and
> one for blue. (Don't ask me why - the answer is on the web - somewhere!).
> For scanners we count
one pixel as being able to represent any colour. So when you think about a
4megapixel camera
compare it to a 16megapixel scan...
>
> For a better explanation and loads of experimental examples, see:
http://www.users.qwest.net/~rnclark/scandetail.htm
>
> And to quote directly from this site: "Film is scanned with each pixel
> have a red, green and
blue value, so the 3260 x 4472 pixel scan of the 35mm film is 14.6
> megapixels. But these are not the same as the pixels in a digital camera.
> In a digital camera,
each pixel is ony a red, or a green, or a blue pixel. Digital cameras have 50
0reen, 25% blue and
25% red pixels (thus called RGBG). So a 1 megapixel digital
> camera has 1 million red + green + blue pixels. Thus, the 35mm scan has
> 14.6 * 3 pixels or 43.8
megapixels in digital camera equivalent pixels. "
>
> So, do we have to buy an E-10 yet? Yes, for fun, but keep the OM and the
> scanner for serious
stuff!
> best regds
> jez
>
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