Main
Model
Price
Advantages
launch
Announced
Body type
Camera subcategory
Sensor
Effective pixels
Max resolution
Sensor size
Sensor type
Processor
Image ratio w:h
Other resolutions
Sensor photo detectors
Image
ISO
Boosted ISO (minimum)
White balance presets
Custom white balance
Image stabilization
Uncompressed format
JPEG quality levels
Boosted ISO (maximum)
Photography features
Minimum shutter speed
Maximum shutter speed
Aperture priority
Shutter priority
Manual exposure mode
Subject / scene modes
Built-in flash
External flash
Continuous drive
Self-timer
Metering modes
Exposure compensation
AE Bracketing
WB Bracketing
Screen / viewfinder
Articulated LCD
Screen size
Screen dots
Touch screen
Screen type
Live view
Viewfinder type
Viewfinder coverage
Viewfinder magnification
Viewfinder resolution
Videography features
Resolutions
File Format
Videography notes
Microphone
Speaker
Optics & Focus
Autofocus
Digital zoom
Manual focus
Number of focus points
Lens mount
Focal length multiplier
Physical
Weight (inc. batteries)
Dimensions
Environmentally sealed
Battery
Battery details
Battery Life (CIPA)
Storage
Storage types
Connectivity
USB
HDMI
Microphone port
Headphone port
Wireless
Wireless notes
Remote control
Other features
Orientation sensor
Timelapse recording
GPS
Samples
Videos
Summary
The Canon EOS 5DS maximum resolution of 8688 x 5792 pixels (51 megapixels) is better than the Alpha 7R highest resolution of 7360 x 4912 pixels (36 megapixels). The Canon EOS 5DS has more focus points than the Alpha 7R: 61 vs 25. More number of focus points means less risk of losing focus lock during following a moving object.
The Sony Alpha 7R has tilting display which will allow the photographer to make images from any interesting perspective. The Alpha 7R display is better as it has more screen dots 1,230,000 in comparison to 1,040,000 dots of the Canon EOS 5DS screen. The higher dot count display is better for reviewing photos on your camera.
The Canon EOS 5DS battery life is better in compare to the Alpha 7R battery life. According to CIPA standards the photographer will be able to capture 700 shots with the EOS 5DS and only 340 with the Alpha 7R. The Sony Alpha 7R weighs 465g that is 465g less than the weight of the EOS 5DS.
Considering the above differences the EOS 5DS will be the best buy. Get the lowest price on Amazon.