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 1-on-1 Comparison
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GENERAL
Model Sony Alpha A7 III Sony Alpha A7R III Sony Alpha A9 Sony Alpha A7S II Sony Alpha A7R II
Release Date 2018-02-27 2017-10-25 2017-04-19 2015-10-12 2015-06-10
Camera Type SLR-style mirrorless SLR-style mirrorless SLR-style mirrorless SLR-style mirrorless SLR-style mirrorless
Current Price $1,999.99 $3,198.00 $3,998.00 $2,398.00 $1,998.00
SENSOR COMPARISON
Sensor Resolution
24

Megapixel

42

Megapixel

24

Megapixel

12

Megapixel

42

Megapixel

Max Image Dimensions 6000 x 4000 7952 x 5304 6000 x 4000 4240 x 2832 7974 x 5316
Sensor Type BSI-CMOS BSI-CMOS BSI-CMOS CMOS BSI-CMOS
Sensor Size Full frame Full frame Full frame Full frame Full frame
Sensor Dimensions 35.8 x 23.8 mm 35.9 x 24 mm 35.6 x 23.8 mm 35.6 x 23.8 mm 35.9 x 24 mm
Sensor Area
852mm2
861mm2
847mm2
847mm2
861mm2
Max ISO

51200

32000

51200

102400

25600

Min ISO

100

100

100

100

100

RAW Support
SHOOTING FEATURES COMPARISON
Model Sony Alpha A7 III Sony Alpha A7R III Sony Alpha A9 Sony Alpha A7S II Sony Alpha A7R II
Max Shutter Speed 1/8000 sec 1/8000 sec 1/8000 sec 1/8000 sec 1/8000 sec
Min Shutter Speed 30 sec 30 sec 30 sec 30 sec 30 sec
Continuous Shooting 10.0 fps 10.0 fps 20.0 fps 5.0 fps 5.0 fps
Shutter Priority
Aperture Priority
Manual Exposure
Exposure Compensation 5 (at 1/3 EV, 1/2 EV steps) 5 (at 1/3 EV, 1/2 EV steps) 5 (at 1/3 EV, 1/2 EV steps) 5 (at 1/3 EV, 1/2 EV steps) 5 (at 1/3 EV, 1/2 EV steps)
Exposure Metering
  • MultiCenter-weightedHighlight-weightedAverageSpot
  • MultiCenter-weightedSpot
  • MultiCenter-weightedHighlight-weightedAverageSpot
  • MultiCenter-weightedSpot
  • MultiCenter-weightedSpot
Auto Exposure Bracketing 5 (3, 5 frames at 1/3 EV, 1/2 EV, 2/3 EV, 1 EV, 2 EV steps) 5 (3, 5 frames at 1/3 EV, 1/2 EV, 2/3 EV, 1 EV, 2 EV steps) 5 (3, 5 frames at 1/3 EV, 1/2 EV, 2/3 EV, 1 EV, 2 EV steps) 5 (3, 5 frames at 1/3 EV, 1/2 EV, 2/3 EV, 1 EV, 2 EV steps) 5 (3, 5 frames at 1/3 EV, 1/2 EV, 2/3 EV, 1 EV, 2 EV steps)
Custom White Balance
Image Stabilizer Sensor-shift Sensor-shift Sensor-shift Sensor-shift Sensor-shift
Built-in Flash
Flash Range no built-in flash no built-in flash no built-in flash no built-in flash no built-in flash
Max Flash Sync no built-in flash no built-in flash no built-in flash no built-in flash no built-in flash
Flash Modes no built-in flash Off, Auto, Fill-flash, Slow Sync, Rear Sync, Red-eye reduction, Wireless, Hi-speed sync Flash off, Autoflash, Fill-flash, Slow Sync., Rear Sync., Red-eye reduction, Wireless, Hi-speed sync no built-in flash no built-in flash
External Flash
AE Bracketing
WB Bracketing
VIEWFINDER COMPARISON
Viewfinder Type Electronic Electronic Electronic Electronic Electronic
Viewfinder Resolution 2,359k dots 3,686k dots 3,686k dots 2,359k dots 2,359k dots
Viewfinder Coverage 100% 100% 100% 100% 100%
Viewfinder Magnification 0.78 0.78 0.78 0.78 0.78
LCD DISPLAY COMPARISON
Display Type Tilting Tilting Tilting Tilting Tilting
Technology n/a n/a n/a n/a n/a
Screen Size
3'
3″
3″
3″
3″
Resolution 922k dots 1,440k dots 1,440k dots 1,229k dots 1,229k dots
Live View
Touch Screen
VIDEO COMPARISON
Model Sony Alpha A7 III Sony Alpha A7R III Sony Alpha A9 Sony Alpha A7S II Sony Alpha A7R II
Video Resolution 3840 x 2160 (30p, 24p) 1920 x 1080 (120p, 60p, 60i, 24p), 1440 x 1080 (30p), 640 x 480 (30p) 3840 x 2160 (30p, 25p, 24p), 1920 x 1080 (60p, 60i, 24p), 1440 x 1080 (30p), 640 x 480 (30p) n/a 4K (3840 x 2160 @ 30p/24p [60-100Mbps]), Full HD (1920 x 1080 @ 120p/60p/60i/30p/24p [50-100Mbps]), 720p (30p [16Mbps]) 3840 x 2160 (30p, 25p, 24p), 1920 x 1080 (60p, 60i, 24p), 1440 x 1080 (30p), 640 x 480 (30p)
Video File Format
  • MPEG-4
  • AVCHD
  • XAVC S
  • H.264
  • MPEG-4
  • AVCHD
  • XAVC S
  • MPEG-4
  • AVCHD
  • H.264
  • MPEG-4
  • AVCHD
  • XAVC S
  • MPEG-4
  • AVCHD
  • XAVC S
Microphone Type Yes Stereo Yes Stereo Stereo
Speaker Type Mono Mono Mono Mono Mono
External Microphone Port
External Headphone Port
PHYSICAL SPECS COMPARISON
Weight 650 g 657 g 673 g 627 g 625 g
Dimensions 127 x 96 x 74 mm 127 x 96 x 74 mm 127 x 96 x 63 mm 127 x 96 x 60 mm 127 x 96 x 60 mm
Body Sealing Yes Yes Yes Yes Yes
BATTERY and STORAGE
Battery Type Battery Pack Battery Pack Battery Pack Battery Pack Battery Pack
Battery Life

610 Shots

650 Shots

650 Shots

370 Shots

290 Shots

Storage Media SD/SDHC/SDXC, Memory Stick Duo/Pro Duo/Pro-HG Duo Two SD/SDHC/SDXC slots (UHS-II support on one) Dual SD/SDHC/SDXC slots (UHS-II compatible) SD/SDHC/SDXC, Memory Stick Duo/Pro Duo/Pro-HG Duo SD/SDHC/SDXC, Memory Stick Duo/Pro Duo/Pro-HG Duo
CONNECTIVITY COMPARISON
Wireless Connectivity Built-In Built-In Built-In Built-In Built-In
HDMI
USB USB 3.1 Gen 1 (5 GBit/sec) USB 3.1 Gen 1(5 GBit/sec) USB 2.0 (480 Mbit/sec) USB 2.0 (480 Mbit/sec) USB 2.0 (480 Mbit/sec)
LENS COMPARISON
Model Sony Alpha A7 III Sony Alpha A7R III Sony Alpha A9 Sony Alpha A7S II Sony Alpha A7R II
Lens Mount Sony E Sony E Sony E Sony E (NEX) Sony E
Focal Range(35mm) No Lens No Lens No Lens No Lens No Lens
Focal Length Multiplier 1x 1x 1x 1x 1x
Optical Zoom No Lens No Lens No Lens No Lens No Lens
Max Aperture No Lens No Lens No Lens No Lens No Lens
Macro Focus Range No Lens No Lens No Lens No Lens No Lens
Manual Focus
AUTOFOCUS COMPARISON
Number of Focus Points 693 425 693 169 399
Contrast Detection
Phase Detection
AF Modes
  • AF Touch
  • AF Continuous
  • AF Single
  • AF Tracking
  • AF Selective
  • AF Center
  • AF Multi Area
  • AF Live View
  • Face Detection
  • AF Touch
  • AF Continuous
  • AF Single
  • AF Tracking
  • AF Selective
  • AF Center
  • AF Multi Area
  • AF Live View
  • Face Detection
  • AF Touch
  • AF Continuous
  • AF Single
  • AF Tracking
  • AF Selective
  • AF Center
  • AF Multi Area
  • AF Live View
  • Face Detection
  • AF Continuous
  • AF Single
  • AF Selective
  • AF Center
  • AF Multi Area
  • AF Live View
  • Face Detection
  • AF Continuous
  • AF Single
  • AF Tracking
  • AF Selective
  • AF Center
  • AF Multi Area
  • AF Live View
  • Face Detection
Current Price $1,999.99 $3,198.00 $3,998.00 $2,398.00 $1,998.00