Compare Sony a7R III vs Nikon D850 vs Nikon D6

Sony a7R III / a7R IIIa (A7R3) Full-Frame Mirrorless Camera (2017)

Nikon D850 Full-Frame DSLR Camera (2017)

Sony | Cameras

Nikon | Cameras

Connectivity

Ports

HDMI + Headphone + Microphone + Remote Control + USB 3.2 Gen 1

HDMI + Headphone + Microphone + Remote Control + USB 3.0

HDMI + Headphone + Microphone + Remote Control + USB 3.2 Gen 1

Wireless Connectivity

802.11b/g/n + NFC + Bluetooth

802.11b/g + NFC + Bluetooth 4.1 LE

802.11ac + Bluetooth

Construction

Form Factor

Mirrorless camera

DSLR camera

Image Size

Full frame (35.9 x 24 mm)

Full frame (35.9 x 23.9 mm)

Lens Mount

Sony E-mount

Nikon F-mount

Microphone

Stereo

Sensor | Resolution

42 MP (7952 x 5304)

45 MP (8256 x 5504)

21 MP (5568 x 3712)

Sensor | Type

BSI-CMOS

CMOS

Speakers

Mono

Dimensions

Size | Depth

74 mm / 2.91 in

79 mm / 3.11 in

92 mm / 3.62 in

Size | Height

96 mm / 3.78 in

124 mm / 4.88 in

163 mm / 6.42 in

Size | Width

127 mm / 5.00 in

146 mm / 5.75 in

160 mm / 6.30 in

Weight

657 g / 23.22 oz

1005 g / 35.51 oz

1450 g / 51.24 oz

Display

Display Diagonal

3 inch

3.2 inch

Display Type

Tilting TFT LCD

Fixed TFT LCD

Resolution

1,440,000 dots

2,359,000 dots

Viewfinder | Coverage

100%

Viewfinder | Magnification

0.78x

0.75x

0.72x

Viewfinder | Resolution

3,686,400 dots

Viewfinder | Type

Electronic

Optical (pentaprism)

Function

AE Bracketing

±5 (3, 5 frames at 1/3 EV, 1/2 EV, 2/3 EV, 1 EV, 2 EV steps)

±5 (2, 3, 5, 7 frames at 1/3 EV, 1/2 EV, 2/3 EV, 1 EV steps)

Autofocus

399 focus points

151 focus points

105 focus points (105 cross type)

Crop Factor

1.0

Exposure Compensation

±5 (at 1/3 EV, 1/2 EV steps)

±5 (at 1/3 EV, 1/2 EV, 1 EV steps)

Exposure Mode

Auto / Aperture Priority / Shutter Priority / Manual

Flash Sync Speed

1/250 s

GPS

Yes

ISO Range

100 ~ 32000 (expands to 50 ~ 102400)

64 ~ 25600 (expands to 32 ~ 102400)

100 ~ 102400 (expands to 50 ~ 3280000)

Image Stabilization

5-axis (5.5 stops)

Intervalometer

Yes

Processor

Bionz X

Expeed 5

Expeed 6

Touch Screen

Yes

Video Codecs

MPEG-4, AVCHD, XAVC S

MPEG-4

MPEG-4, H.264

Video Recording

4K 30p, FHD 60p

Weather Resistance

Yes

Performance

Battery Life

650 shots

1840 shots

3580 shots

Max Burst Rate

10.0 fps

7.0 fps

14.0 fps

Shutter Speed

1/8000 - 30 s

Storage

Two SD/SDHC/SDXC slots (UHS-II support on one)

SD/SDHC/SDXC (UHS-II supported) + XQD

Dual XQD/CFexpress slots

Production

Battery

NP-FZ100 lithium-ion battery and charger

EN-EL15a lithium-ion battery & charger

EN-EL18c lithium-ion battery & charager

Debut

2017-10-25

2017-07-25

2019-09-04

Made In

Japan

Model Name

ILCE-7RM3

Reviews

Neofiliac score

74%

73%

Pros

Long battery life
5.5 stops of IBIS
Good 10.0 fps burst rate
Rather compact
High 42 MP resolution
Weather-sealed
Supports both WiFi and Bluetooth

Exceptional battery life
64 base ISO
High 45 MP resolution
Weather-sealed
Supports both WiFi and Bluetooth
Exceptional ergonomics

Exceptional battery life
Built-in GPS functionality
Good 14.0 fps burst rate
Weather-sealed
Supports CFExpress card
Supports both WiFi and Bluetooth

Cons

Viewfinder with low 0.78x magnification
Lacks intervalometer for timelapse

Low 7.0 fps burst rate
Very heavy
Viewfinder with low 0.75x magnification

Very large in size
Very heavy
Viewfinder with low 0.72x magnification

Price

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