When comparing Canon 5DS / R vs Nikon D850, the Slant community recommends Nikon D850 for most people. In the question“What are the best full frame DSLR cameras?” Nikon D850 is ranked 8th while Canon 5DS / R is ranked 9th. The most important reason people chose Nikon D850 is:
When using manual focus lens, you can turn on focus peaking to see which parts of the picture in in focus, as there will be a colour (by the default settings red) "painted" to tell you that that part of the picture is in focus
Specs
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Pros
Pro Flicker detection
The camera can detect flickering light sources and sync up with them to shoot at peak brightness in order to avoid underexposing the image by accident.
Pro Good autofocus system
61-point autofocus system with 41 cross-type points that performs well in low light. In addition, 5 central autofocus points turn into dual-cross-type points with fast (f/2.8 or faster) lenses increasing the precision even further.
Pro In-camera timelapse
Pro Excellent build quality
The 5DS/R has a magnesium alloy shell that makes it durable.
Pro Programmable Auto ISO
Pro Natural skintones
Pro High resolution
50.6 MP compared to 22.3 MP for the 5D Mark III.
Pro Focus peaking in live view
When using manual focus lens, you can turn on focus peaking to see which parts of the picture in in focus, as there will be a colour (by the default settings red) "painted" to tell you that that part of the picture is in focus
Pro Focus Shift stacking
Also know as focus stacking, this camera is able to do focus shift photography on its own after the set up, thus it will not be so tedious in terms of capturing the photo.
Cons
Con Limited video capabilities
No HDMI output, no headphone socket.
Con Dynamic range could be better
According to tests performed by DxOmark 5DS / R has 12.41 stops of dynamic range in print and 11.08 stops on screen for images taken at 100 ISO while cameras in this price range commonly push 14 in print and 13 on screen.
Con Low max ISO
The cameras go up to 6400 (or 12800 in extended) ISO.
Con AF subject tracking could be better
Con Low-light performance could be better
Con Images at base ISO nosier than competition
Con Expensive to get "faster" frame rate
While it ships with a standard frame rate of 7fps, to get to its full functionality of 9fps, you will need the hand grip, as well as the D5 grip battery and charger, which cost a lot more extra.
