Sony Alpha A9 Review

Overall Score

90

Main Features

  • 24 MP Full frame BSI-CMOS Sensor
  • 100 - 51200 ISO
  • 5-axis Sensor-shift Image Stabilization
  • 3" Tilting Screen
  • Electronic Viewfinder
  • 3686k dot Electronic viewfinder
  • 20 fps continuous shooting
  • 4K 3840 x 2160 video resolution
  • Built-In Wireless
  • 127 x 96 x 63 mm, 673g.
  • Price Category:
  • Replaced by: Alpha A9 Mark II

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Sony Alpha A9 Overview


First introduced in April, 2017, Sony Alpha A9 is a 24 MP Mirrorless with a Full frame (35.6 x 23.8 mm) sized BSI-CMOS sensor.

Sony replaced Alpha A9 with Sony A9 II. Follow the link to read our detailed comparison of these models:

Compare Sony A9 with Sony A9 II


Sony A9 comes with a Full Frame sensor - 35.6 x 23.8 mm BSI-CMOS sensor, which has a diagonal of 42.82 mm

- Full Frame, approximate the actual size shown above

Sensor resolution of Sony A9 ~ 6000 x 4000 pixels.

Sony A9 has Crop Factor: 1.01

The sensor has a surface area of 847.3 mm².

There are approximate 24,000,000 photosites (pixels) on this area.


Proc and Cons of Sony A9


Get to know this camera closer. Let's look at the features and characteristics of this model. Compare Sony Alpha A9 with competitors in pro mirrorless cameras.

Pros
Built-in Wireless
NFC Connectivity
Tilting Screen
3840 x 2160 (4K) Max Video Resolution
AF Face Detection
24MP High Resolution Sensor
1440k dots Screen Resolution
1/8000s Max Shutter Speed
Manual Focus
1/8000s Electronic Shutter Speed
Microphone Port
Environmental Sealing
693 Focus Points
±5 AE Bracketing Range
Focus Bracketing
Bluetooth Connectivity
5-axis Sensor-shift Image Stabilization
Touch Screen
External Flash
RAW Support
51200 Max Native ISO
20.0 fps Continuous Shooting
650 shots Long Battery Life
Manual Exposure Mode
UHS-II Memory Card Support
Headphone Port
3686k dot Viewfinder Resolution
2 Storage Slots
Flash Sync Port
Remote Control with a Smartphone
Cons
No Articulating Screen
Weight: 673g
Type Scores

Sony Alpha A9 has an Overall Score of 90/100 and ranked #11 out of 195 in Mirrorless cameras, and ranked #14 out of 1201 in all cameras.

Sony A9 Scores
Imaging score
78
Features score
92
Value for money score
92
Portability score
78
Overall score
90
Average Scores in Pro Mirrorless
Imaging Score
69
Features Score
74
Value For Money Score
80
Portability Score
74
Overall score
76

Physical Dimensions of Sony A9


Sony Alpha A9 weighs 673g and has external dimensions of 127 x 96 x 63mm (5.0 x 3.78 x 2.48"). Considering that the average weight of Pro Mirrorless cameras is 675g, Sony A9 is 2 grams less than the average weight of cameras in this category. Sony A9 is less by 10mm more than the average length in Pro Mirrorless.

Weight Comparison
Pro Mirrorless Cameras


Sony A9
673g
Average weight
675g
Min weight
465g
Max weight
1320g

Thickness Comparison
Pro Mirrorless Cameras


Sony A9
63mm
Average Thickness
64mm
Min Thickness
37mm
Max Thickness
97mm

Here is the front and top view image of Sony Alpha A9 with the dimensions:

Sony Alpha A9

Size Compared to Major Competitors


Model Weight Alpha A9 Dimensions Alpha A9
Sony Alpha A7R III Sony A7R III 657 g 673 g 127 x 96 x 74 mm 127 x 96 x 63 mm
Sony Alpha A7R II Sony A7R II 625 g 673 g 127 x 96 x 60 mm 127 x 96 x 63 mm
Sony Alpha A7 III Sony A7 III 650 g 673 g 127 x 96 x 74 mm 127 x 96 x 63 mm
Nikon D850 Nikon D850 1015 g 673 g 146 x 124 x 79 mm 127 x 96 x 63 mm
Canon EOS 5D Mark IV Canon 5D MIV 890 g 673 g 151 x 116 x 76 mm 127 x 96 x 63 mm
Canon EOS-1D X Mark II Canon 1D X II 1530 g 673 g 158 x 168 x 83 mm 127 x 96 x 63 mm
Nikon D5 Nikon D5 1415 g 673 g 160 x 158.5 x 92 mm 127 x 96 x 63 mm
Sony Alpha A7 II Sony A7 II 599 g 673 g 127 x 96 x 60 mm 127 x 96 x 63 mm

Specifications of Sony Alpha A9


General
Brand Sony
Model Alpha A9
Announced April, 2017
Body Type SLR-style mirrorless
Lens
Lens Mount Sony E
Manual Focus
Focal Lens Multiplier 1
Number of Lenses 116
Macro Focus Range n/a
Screen
Screen Size 3"
Screen Type Tilting
Screen Resolution 1440k pixels
Touch Screen
Live View
Viewfinder
Viewfinder Electronic
Viewfinder Resolution 3686
Viewfinder Coverage 100%
Viewfinder Magnification 0.78
Autofocus
AF Touch
AF Continuous
AF Single
AF Tracking
AF Selective
AF Center
AF Multi Area
AF Live View
AF Face Detection
AF Contrast Detection
AF Phase Detection
Number of Focus Points 693
Number of Cross Focus Points 0
Photography Features
RAW Support
Min Shutter Speed 1/30 sec
Max Shutter Speed 1/8000 sec
Continuous Shooting 20.0 fps
Shutter Priority
Aperture Priority
Manual Exposure Mode
Exposure Compensation
Custom White Balance
Image Stabilization
Built-in Flash
Flash Range no built-in flash
Flash Modes Flash off, Autoflash, Fill-flash, Slow Sync., Rear Sync., Red-eye reduction, Wireless, Hi-speed sync
External Flash
AE Bracketing
AE Bracketing Range ±5 EV
WB Bracketing
Sensor
Sensor Size Full frame
Sensor Type BSI-CMOS
Sensor Dimensions 35.6 x 23.8 mm
Sensor Area 847.3 mm²
Sensor Resolution 24 MP
Max Image Resolution 6000 x 4000
Max Native ISO 51200
Min Native ISO 100
Max Boosted ISO 204800
Min Boosted ISO 50
Video Features
4K
Max Video Resolution 3840 x 2160
Video Formats MPEG-4, AVCHD, H.264
Timelapse Recording
Microphone Port
Headphone Port
Exposure Modes
Multi-Segment
Average
Spot
Partial
AF-Area
Center Weighted
Connectivity
GPS None
Wireless Connectivity Built-In
Bluetooth
HDMI
USB USB 2.0 (480 Mbit/sec)
Battery
Battery Life 650 shots
Battery Type Battery Pack
Battery Model NP-FZ100
Physical
Weight 673 g
Physical Dimensions 127 x 96 x 63 mm
Environmental Sealing
Water Proof
Dust Proof
Shock Proof
Crush Proof
Freeze Proof
Shock Proof
Storage
Storage Type Dual SD/SDHC/SDXC slots (UHS-II compatible)
Storage Slots 2
Other Features
Self Timer
Selfie Friendly

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