wrote in news:1178493072.610805.170880
@p77g2000hsh.googlegroups.com:
> How does the picture quality for this camera differ from other DSLR
> with smaller size sensor?
> I notice that Canon boasts this as the only full frame sensor (size of
> sensor - 36 mmx 24mm) in their camera line.
> Canon 1D has smaller size sensor (29x19mm). Other Canon DSLR (XT, XTi,
> 20D, 30D), as well as other DSLR cameras such as Nikon, Pentax and
> Sony all has smaller size sensor (typically 22x15mm). High end point
> and shoot cameras (such as Canon G7, Nikon P5000,etc) have much
> smaller size sensor (7x5mm)
> Is larger sensor a definite plus to produce much better quality
> pictures, considering the picture qualities of these cameras are
> generally close together?
A 5D is basically a 20D/30D with less pixels per unit of area in the
focal plane, but with more area and also, more pixels.
The great dividing point on which is better for a given situation, image-
quality-wise, is whether or not you have a good lens to fill your frame
with the subject the way you'd like to. If you have such a lens, then
the 5D is going to have a more detailed capture of the subject. If you
use the same lens, however, then the 5D is only better in that it has a
wider FOV; the capture of any area of the subject is going to be slightly
more detailed on the 20D/30D (and even further still, with the XTi), if
the lens is sharp enough and focus and diffraction allow.
At the pixel level (zoomed in to 100% pixel view), the 20D/30D and 5D are
nearly identical, noise-wise, except that the 5D is a little cleaner
around ISO 400, and the 5D has slightly more banding (line) noise at the
higher ISOs.
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John P Sheehy <>
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