« on: June 27, 2012, 11:04:17 AM »
No comparison is bad or good, they just serve different purposes. Downsizing a bigger image compares how a camera reacts to the *same* amount of light - which wouldn't be the case without downsizing (assuming the same (area) size sensors and shot setup). At the same time looking resolving power, a smaller image has to be uppsized because downsizing would just throw the extra info away - detail wise there is no difference between two 600x400 pixels image one being 80MP MF the other G1X. All comparison have meanings done and interpreted properly.
Yes, turn my 36mp body into a 22mp body in order to make it look better. Thats how DXO rationalizes the high per pixel noise into something usable. Maybe if they resized it to one pixel it would be perfect.
The point is that there is no holy grail, and all the posting being done by those who just read articles and have zero experience with either camera is not very helpful.
Obviously, my D800 can take some amazing images at ISO 100 - 400, but just like the OP notes with his 5D MK III, as soon as you get into shadows and the ISO gets up over 400, you have to be more careful with exposures, and at very high ISO's, the 5D MK III has more DR than the D800.