Main
Model
Price
Advantages
launch
Announced
Body type
Camera subcategory
Sensor
Effective pixels
Max resolution
Sensor size
Sensor type
Processor
Image ratio w:h
Sensor photo detectors
Image
ISO
Boosted ISO (minimum)
Boosted ISO (maximum)
White balance presets
Custom white balance
Image stabilization
Image stabilization notes
CIPA image stabilization rating
Uncompressed format
JPEG quality levels
Photography features
Minimum shutter speed
Maximum shutter speed
Aperture priority
Shutter priority
Manual exposure mode
Subject / scene modes
Built-in flash
External flash
Flash modes
Continuous drive
Self-timer
Metering modes
Exposure compensation
AE Bracketing
WB Bracketing
Flash range
Screen / viewfinder
Articulated LCD
Screen size
Screen dots
Touch screen
Screen type
Live view
Viewfinder type
Viewfinder coverage
Viewfinder magnification
Viewfinder resolution
Videography features
File Format
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
Main
Model
Price
Advantages
SENSOR Effective pixels: 42 megapixels
SENSOR Max resolution: 7952 x 5304
SENSOR Sensor size: Full frame (35.9 x 24 mm)
SENSOR Sensor photo detectors: 44 megapixels
IMAGE ISO: Auto, 100-32000 (expands to 50-102400)
IMAGE Boosted ISO (maximum): 102400
IMAGE White balance presets: 10
IMAGE Image stabilization: Sensor-shift
PHOTOGRAPHY FEATURES Maximum shutter speed: 1/8000 sec
PHOTOGRAPHY FEATURES Continuous drive: 10.0 fps
SCREEN / VIEWFINDER Screen dots: 1,440,000
OPTICS & FOCUS Number of focus points: 425
Main
Model
Price
Advantages
PHOTOGRAPHY FEATURES Built-in flash: Yes
SCREEN / VIEWFINDER Articulated LCD: Fully articulated
SCREEN / VIEWFINDER Viewfinder type: Optical (pentamirror)
PHYSICAL Weight (inc. batteries): 453 g (1.00 lb / 15.98 oz)
Summary
The Alpha a7R III maximum resolution of 7952 x 5304 pixels (42 megapixels) is better than the Canon EOS Rebel SL2 (EOS 200D / Kiss X9) highest resolution of 6000 x 4000 pixels (24 megapixels). The Alpha a7R III is produced with larger sensor compared to the Canon EOS Rebel SL2 (EOS 200D / Kiss X9): Full frame (35.9 x 24 mm) versus APS-C (22.3 x 14.9 mm). This is the most important advantage of this model as large sensor lets the photographer to produce pictures of the more professional quality. The Alpha a7R III has a wider ISO range of 100-32000 than 100-25600 ISO range of the Canon EOS Rebel SL2 (EOS 200D / Kiss X9). Such ISO range allow the photographer to produce good quality pictures in low light conditions. The Alpha a7R III provides more presets of white balance - 10. It gives the photographer more control over colour. The Alpha a7R III has image stabilization which will allow the photographer to produce blur-free pictures when using telephoto lenses. The Alpha a7R III offers more focus points than the Canon EOS Rebel SL2 (EOS 200D / Kiss X9): 425 vs 9. More number of focus points means more convenience while attempting to focus on subjects that are not centred.
The Canon EOS Rebel SL2 (EOS 200D / Kiss X9) is produced with swiveling LCD that will allow the photographer to shoot amazing selfies. The Alpha a7R III screen is better as it has more screen dots 1,440,000 in comparison to 1,040,000 dots of the Canon EOS Rebel SL2 (EOS 200D / Kiss X9) screen. The higher dot count screen is better for reviewing photos on your camera. The Sony Alpha a7R III provides better maximum shutter speed - 1/8000 second.
The Canon EOS Rebel SL2 (EOS 200D / Kiss X9) has built-in flash. The Canon EOS Rebel SL2 (EOS 200D / Kiss X9) weighs 453g which is 204g less than the weight of the Sony Alpha a7R III.
Considering the above differences the Alpha a7R III is the best choice. Check the list of the best offers on Amazon