jorkata wrote:
Andrew Krend wrote
Maybe this has been covered already (though I didn't see it) but for me, the huge striking difference (on the imaging-resource site) between the 7D and the 50D samples was the NR muddiness/smearing... it's significantly reduced (almost gone!) in the 7D shots. I noticed the same thing too.
The 7D seems to have a weak AA filter, so detail at low ISOs is very crisp.
For high ISOs they must be using some new NR technique because as noise increases, detal stays pretty much the same - without the usual mushiness associated with NR.
Thanks to jorkata, garyvot, keithreeder, and Daan B for the replies... In summary the theories about why the 7D appears to have much less NR muddiness then either the 50D or the 5dm2 are:
1) weaker AA filter
2) different JPEG NR processing
3) something about the sensor design
4) some combination of those
As Daan B points out, to really know about the quality of the new sensor (and any other physical aspect of the camera) we need to see some RAWs. I agree completely, but without those, comparing the out of camera JPEGs still shows us something about canon's approach to image quality.
Because the 1dm3 JPEGs have a similar quality in terms of NR mudiness, I'm wondering if anyone knows whether the AA filter in the 1dm3 is weaker then that of the 50D and 5dm2? I read that the anti-aliasing filter in the 7D was split into two panes of glass (or whatever it is), but this was part the revision to the anti-dust system, with no mention of a change in the optical quality. I'd call it a big win for the 7D if it means less smeary effects.
If canon did something different with the NR processing, I would hope that they'd push that change (assuming it's something fixed in firmware) out to the other digic 4 cameras. Even though it's "just jpegs" it would be a welcome improvement to my 50D.
Andrew