Here is a Canon RF 100-400mm f/5.6-8 IS review. One of the less expensive lens…
The Canon EOS R has been DxOMarked and gets a score of 89.
A DxOMark of 89 puts the Canon EOS R behind the competition, with the Nikon Z 6 scoring a 95 and the Sony a7 III a 96. The EOS R’s score is very close to the one of the EOS 5D Mark IV, which is not surprising since these cameras have very similar image sensors.
From DxOMark’s conclusion:
While not possessing the low noise levels of the Nikon Z 6 and Sony A7 III, which have slightly lower pixel density and BSI architecture in their favor, the EOS R’s sensor is one of Canon’s best. It comes very close to the one used in the pro-level EOS 1Dx Mark II, particularly in its low light, high ISO capabilities.
With a low noise floor, the dynamic range of the Canon 30MP sensor greatly improves over its predecessors. The EOS R is much more capable of handling high-contrast scenes, thus allowing a photographer faced with protecting highlights at capture to lift shadows in post-processing without incurring some of the noise penalties.
With its first model in a new system, Canon has equipped the EOS R with one of its best sensors—and that, together with some very interesting lenses, signals that it’s taking “mirrorless” very seriously.Read the review…
Canon EOS R: