advantage, but time moves on and todays DSLR from major mfr are
just as capable and more in producing quality images
I surf around flickr eventually and get to see a lot of pictures
done with present major brand gear. From my impression, the quality
is still not the same, if you leave out the obviously better high
iso/long exposure performance and things like higher frame rates
and advanced functionality. When I look at the "original" size of
posted images that look nice as thumbnail, I am often disappointed.
I dont intend to "bash" any other particular gear here but if you
compare (100 percent-crop-wise) the Sigma @ iso 100 and with decent
glass with major brand cams in the original price range of the SD,
the colours of other cams often look weird and the images usually
look softer. THis gets most obvious in HDR imaging. Even IF the
image quality was the same, I would not really mind since I am
happy with the SD's. But it still isnt. They can release a 20MP
bayer camera and, up to a certain size, it will still be worse than
the SD.
But that's only my subjective impression and I have neither the
will nor the know-how to scientifically prove that. I mean, it's
also possible that all 30d users are conspiring and use
post-processing to make lesser people believe that the sky is full
of purple particles. ;P