Can the statement "......the pixel quality of [a] digital image is just
better...." be extended to the following statement ".....the pixel quality
of [a] digital image obtained by a sensor in a digital camera is just better
than the pixel quality of a digital image obtained by scanning a film camera
negative where the megapixel size of both digital files is the same."
The only givens are that both images capture the same scene, that the
lighting conditions are the same for both images, that the film ISO and the
digital camera ISO setting are the same, and that the film scanner is a high
end professional model capable of doing full credit to the negative.
jh
----- Original Message -----
From: "C.H.Ling" <ch_photo@xxxxxxxxxxxxx>
To: "Olympus Camera Discussion" <olympus@xxxxxxxxxxxxxxxxx>
Sent: Sunday, October 25, 2009 9:43 AM
Subject: Re: [OM] An old comparison of scanned film vs microphotograph of
film
> Film may have very high absolution resolution (for B/W lines) but the
> pixel
> quality of digial image is just better, see here a scan of RVP50 at
> 4000dpi
> with 4000ED and a 21MP 5D II capture, both taken with 24/2.
>
> http://www.accura.com.hk/temp/ST-10004.jpg (6.8MB)
>
> http://www.accura.com.hk/temp/IMG_0918.JPG (5.5MB)
>
> C.H.Ling
>
>
>
> ----- Original Message -----
> From: "Tim Hughes"
>
>
> A long time back C.H.Ling shared on list some of his comparisons of film
> scanner vs microphotographs of the film.
> This is is essentially the same, but is done at 2400dpi and 4000dpi, so
> gives an idea of what is lost at different scanner resolutions. Remember
> that film scanners have nominally a lot better resolution and lower
> artifacts than digi cameras, at same dpi, because they don't use Bayer
> sensor patterns, so resolution is same for all colors. (Bayer resolution
> is
> half for red and blue versus green).
>
> Contrast and AA filter also affect nominal resolution, so comparisons are
> always difficult.
>
> http://www.porteous.net/test/digi.html
>
>
> Tim Hughes
>
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