When comparing Fujifilm GFX 50S vs Canon 5DS/R, the Slant community recommends Canon 5DS/R for most people. In the question“What are the best cameras for landscape photography?” Canon 5DS/R is ranked 2nd while Fujifilm GFX 50S is ranked 3rd. The most important reason people chose Canon 5DS/R is:
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.
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Pros
Pro Mirrorless
Pro Wi-Fi
Pro USB 3.0 port
Pro 1080/30p video
Pro Weather sealing
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 High resolution
50.6 MP compared to 22.3 MP for the 5D Mark III.
Pro Natural skintones
Pro Excellent build quality
The 5DS/R has a magnesium alloy shell that makes it durable.
Pro Programmable Auto ISO
Pro In-camera timelapse
Cons
Con Heavy
920 g (with EVF)
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.