[Reisefoto]

DXO vergleicht die Sensoren der Sensoren Canon EOS5Ds & r, Sony A7r und Nikon D810. Das Ergebnis fällt (nicht unerwartet) nicht sonderlich gut für die Canon aus.
http://www.dxomark.com/Reviews/Canon...10-vs-Sony-A7R

Sitting outside the top 20 in the rankings, the headline scores for the EOS 5DS suggest that it’s far behind the best sensors we’ve tested. The Nikon D810 and the Sony A7R, for example, both offer around two-thirds of a stop better image quality, with overall scores of 97 and 95 points, respectively, compared to 87 for the 5DS.

For Color Sensitivity, the D810 and the A7R are also two-thirds of a stop better than the 5DS at base ISO, with scores of 25.7/25.6 bits, respectively, compared to 24.7 for 5DS. For screen results, the Nikon/Sony advantage for color is maintained as sensitivity is increased, although the gap narrows marginally. For print results, however, the difference between the three sensors is much closer, with the EOS 5DS sensor only fractionally behind the Nikon/Sony competition.

For Dynamic Range, however, there’s a much bigger difference among the three sensors at base ISO, where the Nikon D810 and Sony A7R sensors are far ahead. Landscape scores of 14.8Ev for the D810, compared to 12.4Ev for the 5DS, put the Nikon over two stops ahead, and the A7R just under two stops ahead with 14.1Ev. Despite this wide gap at base ISO, however, the gap narrows significantly as sensitivity is increased and by ISO800, all three sensors offer the same Dynamic Range. So the D810 and the A7R have an advantage for Dynamic Range only between ISO50 and ISO400, but this two-stop advantage will be significant for photographers shooting at the lower ISO sensitivities.