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Sony A9 vs Sony G3

Portability
65
Imaging
73
Features
93
Overall
81
Sony Alpha A9 front
 
Sony Cyber-shot DSC-G3 front
Portability
94
Imaging
33
Features
30
Overall
31

Sony A9 vs Sony G3 Key Specs

Sony A9
(Full Review)
  • 24MP - Full frame Sensor
  • 3" Tilting Display
  • ISO 100 - 51200 (Expand to 204800)
  • Sensor based 5-axis Image Stabilization
  • 1/8000s Max Shutter
  • 3840 x 2160 video
  • Sony E Mount
  • 673g - 127 x 96 x 63mm
  • Launched April 2017
  • Refreshed by Sony A9 II
Sony G3
(Full Review)
  • 10MP - 1/2.3" Sensor
  • 3.5" Fixed Screen
  • ISO 80 - 3200
  • Optical Image Stabilization
  • 640 x 480 video
  • 35-140mm (F3.5-10.0) lens
  • 185g - 97 x 59 x 22mm
  • Announced January 2009
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Sony A9 vs Sony G3 Overview

In this write-up, we will be contrasting the Sony A9 versus Sony G3, former being a Pro Mirrorless while the latter is a Small Sensor Compact and both are sold by Sony. There exists a large gap between the resolutions of the A9 (24MP) and G3 (10MP) and the A9 (Full frame) and G3 (1/2.3") feature totally different sensor dimensions.

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The A9 was revealed 8 years later than the G3 and that is quite a serious difference as far as technology is concerned. Each of the cameras offer different body type with the Sony A9 being a SLR-style mirrorless camera and the Sony G3 being a Compact camera.

Before delving straight into a in-depth comparison, below is a simple overview of how the A9 grades vs the G3 in the way of portability, imaging, features and an overall grade.

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Reasons to pick Sony A9 over the Sony G3

 A9 G3 
AnnouncedApril 2017January 2009More recent by 101 months
Screen typeTiltingFixed Tilting screen
Screen resolution1440k921kCrisper screen (+519k dot)

Reasons to pick Sony G3 over the Sony A9

 G3 A9 
Screen sizing3.5"3"Bigger screen (+0.5")

Common features in the Sony A9 and Sony G3

 A9 G3 
Manually focus More accurate focus
Selfie screen Neither contains selfie screen
Touch screen Quickly navigate

Sony A9 vs Sony G3 Physical Comparison

For anyone who is looking to lug around your camera, you have to take into account its weight and dimensions. The Sony A9 has got physical measurements of 127mm x 96mm x 63mm (5.0" x 3.8" x 2.5") accompanied by a weight of 673 grams (1.48 lbs) while the Sony G3 has dimensions of 97mm x 59mm x 22mm (3.8" x 2.3" x 0.9") and a weight of 185 grams (0.41 lbs).

Check out the Sony A9 versus Sony G3 in our completely new Camera plus Lens Size Comparison Tool. Camera Size Comparison with Lenses

Keep in mind, the weight of an ILC will differ based on the lens you use at the time. The following is the front view overall size comparison of the A9 versus the G3.

Sony A9 vs Sony G3 size comparison

Taking into consideration dimensions and weight, the portability score of the A9 and G3 is 65 and 94 respectively.

Sony A9 vs Sony G3 top view buttons comparison

Sony A9 vs Sony G3 Sensor Comparison

Typically, its tough to visualise the contrast between sensor measurements merely by reading technical specs. The graphic below will offer you a greater sense of the sensor sizing in the A9 and G3.

As you have seen, the two cameras enjoy different megapixels and different sensor measurements. The A9 with its bigger sensor will make achieving shallower DOF simpler and the Sony A9 will offer you greater detail because of its extra 14 Megapixels. Higher resolution will make it easier to crop pictures far more aggressively. The younger A9 is going to have an advantage in sensor technology.

Sony A9 vs Sony G3 sensor size comparison

Sony A9 vs Sony G3 Screen and ViewFinder

Sony A9 vs Sony G3 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Sony A9 Portrait photography factors
Sony G3 Portrait photography factors
83
has manual focus
decent MP (24 megapixels)
big sensor size (Full frame)
supports face detection focusing
supports RAW formats
26
manual focus
manual mode not possible
can't use external flash
megapixel count low (10 megapixels)
very small sensor (1/2.3")
lack of RAW support
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Street Comparison

Sony A9 Street photography info
Sony G3 Street photography info
79
screen tilts
image stabilization (Sensor based 5-axis)
big sensor size (Full frame)
supports RAW formats
provides focus via touch
environment sealing
great high ISO (51,200)
56
image stabilization (Optical)
fixed screen
very small sensor (1/2.3")
lack of RAW support
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Sports Comparison

Sports photography with Sony A9
Sports photography with Sony G3
86
high shutter speed (1/8,000 seconds)
silent shooting (1/32,000 seconds)
fast continuous shooting (20.0 frames per second)
image stabilization (Sensor based 5-axis)
decent MP (24 megapixels)
big sensor size (Full frame)
supports tracking autofocus
environment sealing
great battery pack (650 CIPA)
comes with phase detect AF
23
image stabilization (Optical)
low max shutter speed (1/1,000s)
slow continuous shooting (2.0 frames per second)
lack of shutter priority mode
megapixel count low (10MP)
very small sensor (1/2.3")
lack of phase detect autofocus
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Travel Comparison

Travel photography with Sony A9
Travel photography with Sony G3
73
great battery pack (650 shots)
environment sealing
has bluetooth
provides focus via touch
decent MP (24 megapixels)
screen is not selfie friendly
50
has built in flash
lack of Timelapse function
megapixel count low (10MP)
display is not selfie friendly
wide angle not the best (35mm)
slow max aperture (f3.5)
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Landscape Comparison

Sony A9 as a Landscape photography camera
Sony G3 as a Landscape photography camera
85
has manual focus
swap lenses (Sony E mount)
decent sized screen (3")
image stabilization (Sensor based 5-axis)
decent MP (24 megapixels)
big sensor size (Full frame)
great high ISO (51,200)
supports RAW formats
environment sealing
great battery pack (650 per charge)
2 card slots
36
manual focus
screen larger than average (3.5 inches)
image stabilization (Optical)
can't change lens (fixed lens mount)
wide angle not the best (35mm)
slow max aperture (f3.5)
manual mode not possible
megapixel count low (10MP)
very small sensor (1/2.3")
lack of RAW support
lack of Timelapse function
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Vlogging Comparison

Sony A9 Vlogging factors
Sony G3 Vlogging factors
36
has touchscreen
image stabilization (Sensor based 5-axis)
supports face detection focusing
video res high (3840 x 2160 pxls)
does have external microphone support
screen is not selfie friendly
27
built-in touchscreen
image stabilization (Optical)
wide angle not the best (35mm)
slow max aperture (f3.5)
display is not selfie friendly
video resolution low (640 x 480 pxls)
lack of microphone support
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Sony A9 vs Sony G3 Specifications

Detailed spec comparison table for Sony A9 and Sony G3
 Sony Alpha A9Sony Cyber-shot DSC-G3
General Information
Manufacturer Sony Sony
Model type Sony Alpha A9 Sony Cyber-shot DSC-G3
Class Pro Mirrorless Small Sensor Compact
Launched 2017-04-19 2009-01-08
Physical type SLR-style mirrorless Compact
Sensor Information
Processor Chip BIONZ X -
Sensor type BSI-CMOS CCD
Sensor size Full frame 1/2.3"
Sensor measurements 35.6 x 23.8mm 6.17 x 4.55mm
Sensor area 847.3mm² 28.1mm²
Sensor resolution 24 megapixel 10 megapixel
Anti alias filter
Aspect ratio 3:2 and 16:9 4:3, 3:2 and 16:9
Max resolution 6000 x 4000 3648 x 2736
Max native ISO 51200 3200
Max enhanced ISO 204800 -
Min native ISO 100 80
RAW support
Min enhanced ISO 50 -
Autofocusing
Manual focusing
Touch focus
Continuous AF
Single AF
Tracking AF
Selective AF
AF center weighted
AF multi area
AF live view
Face detect focusing
Contract detect focusing
Phase detect focusing
Total focus points 693 9
Lens
Lens support Sony E fixed lens
Lens zoom range - 35-140mm (4.0x)
Max aperture - f/3.5-10.0
Total lenses 121 -
Crop factor 1 5.8
Screen
Type of display Tilting Fixed Type
Display sizing 3 inches 3.5 inches
Resolution of display 1,440 thousand dots 921 thousand dots
Selfie friendly
Liveview
Touch functionality
Viewfinder Information
Viewfinder Electronic None
Viewfinder resolution 3,686 thousand dots -
Viewfinder coverage 100% -
Viewfinder magnification 0.78x -
Features
Min shutter speed 30 seconds 1 seconds
Max shutter speed 1/8000 seconds 1/1000 seconds
Max quiet shutter speed 1/32000 seconds -
Continuous shutter rate 20.0fps 2.0fps
Shutter priority
Aperture priority
Manually set exposure
Exposure compensation Yes -
Change WB
Image stabilization
Built-in flash
Flash distance no built-in flash 4.30 m (Auto ISO)
Flash settings Flash off, Autoflash, Fill-flash, Slow Sync., Rear Sync., Red-eye reduction, Wireless, Hi-speed sync Auto, On, Off, Red-Eye reduction, Slow Sync
Hot shoe
AE bracketing
White balance bracketing
Exposure
Multisegment
Average
Spot
Partial
AF area
Center weighted
Video features
Supported video resolutions - 640 x 480 (30, 15 fps), 320 x 240 (30, 15 fps)
Max video resolution 3840x2160 640x480
Video data format MPEG-4, AVCHD, H.264 Motion JPEG
Microphone support
Headphone support
Connectivity
Wireless Built-In None
Bluetooth
NFC
HDMI
USB USB 2.0 (480 Mbit/sec) USB 2.0 (480 Mbit/sec)
GPS None None
Physical
Environment sealing
Water proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 673g (1.48 lb) 185g (0.41 lb)
Dimensions 127 x 96 x 63mm (5.0" x 3.8" x 2.5") 97 x 59 x 22mm (3.8" x 2.3" x 0.9")
DXO scores
DXO Overall rating 92 not tested
DXO Color Depth rating 24.9 not tested
DXO Dynamic range rating 13.3 not tested
DXO Low light rating 3517 not tested
Other
Battery life 650 pictures -
Form of battery Battery Pack -
Battery ID NP-FZ100 -
Self timer Yes (2, 5, 10 secs + continuous) Yes (2 or 10 sec)
Time lapse feature
Storage type Dual SD/SDHC/SDXC slots (UHS-II compatible) Memory Stick Duo/Pro Duo, Internal
Card slots 2 Single
Price at release $4,498 $200