Sony a7R III vs. Canon 5D Mark IV vs. Nikon D850

October 25, 2017

With the launch of Sony’s a7R III, full frame fans have plenty to agonize over. We’ve compiled a quick comparison of the three leading models to help guide you.


5D Mark IV Hands-on Review

Nikon D850 Lab Test

Nikon D850 Hands-on Review

Sony a7R III Lab Test

Image Sensor

Sony a7R III: 42-megapixel, no low-pass filter
Canon 5D Mark IV: 30-megapixel, low-pass filter
Nikon D850: 45-megapixel, no low-pass filter

ISO Range

Sony a7R III: 100-32,000 (50-102,400 expandable)
Canon 5D Mark IV: 100-32,000 (50-102,400 expandable)
Nikon D850: 64-25,600 (32-102,400 expandable)


Sony a7R III: 399 phase detect and 425 contrast detect AF points
Canon 5D Mark IV: 61 AF points w/ 45 cross-type points (plus Dual Pixel CMOS AF)
Nikon D850: 153 AF points

Continuous Shooting

Sony a7R III: 10fps (76 JPEGs and/or 28 RAW images)
Canon 5D Mark IV: 7fps (unlimited JPEGs or 21 RAW images)
Nikon D850: 7fps or 9fps with battery grip & D5 battery (51 RAW images)

Video Recording

Sony a7R III: 4K/30p (3840 x 2160) with Hybrid Log Gamma & Slog2/3
Canon 5D Mark IV: 4K/30p (4096 x 2160), CLog w/ $100 firmware update
Nikon D850: 4K (3840 x 2160)

Battery Life

Sony a7R III: 530 shots
Canon 5D Mark IV: 900 shots
Nikon D850: 1,840 shots


Sony a7R III: 23.2 ounces
Canon 5D Mark IV: 28.2 ounces
Nikon D850: 32.3 ounces


Sony a7R III: $3,200
Canon 5D Mark IV: $3,299
Nikon D850: $3,300

Video Comparison

Dan and Sally Watson at Learning Cameras have created this useful comparison video putting all three powerhouse cameras through their paces.