Re: Upgrading from 300D - to 40D or 5D??

BD <robert.drea@xxxxxxxxx> wrote in news:1182788366.411427.58160
@o61g2000hsh.googlegroups.com:

Aside from the incompatibility with my EF-S lenses, and the cost, are
there any downsides to the 5D over, say, the 30D/40D?

Can't speak of the 40D, as we don't know if a camera by that number will
ever exist, and even if it does, what its specs will be, but the 5D is
basically a 30D with more pixels, bigger pixels, and of course, a bigger
total sensor area.

The 5D will have less spatial subject resolution with the same lens, shot
from the same distance. That's because the pixels are spaced further
apart. If you crop a 5D image to the same size as it would be with a 30D
and the same lens, distance, and subject, the 5D image will be more
pixelated and more noisy. It also will rely on the sometimes dodgy focal
plane edge areas of some lenses, where the optical quality drops of
rapidly in the edges and corners.

On the positive side, the 5D has a bigger sensor, so when you do use the
entire frame, and use a quality lens to fill the bigger frame with your
subject, you will have more detail from the extra pixels, and less total
image noise, as the pixel noise characteristics are almost identical to
the 30D, but there are more of them, yielding a finer grain for the
entire image.


--

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John P Sheehy <JPS@xxxxxxx>
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