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Sony A7S III vs Sony RX100 III

Portability
61
Imaging
64
Features
92
Overall
75
Sony Alpha A7S III front
 
Sony Cyber-shot DSC-RX100 III front
Portability
89
Imaging
51
Features
77
Overall
61

Sony A7S III vs Sony RX100 III Key Specs

Sony A7S III
(Full Review)
  • 12MP - Full frame Sensor
  • 3" Fully Articulated Screen
  • ISO 80 - 102400 (Expand to 409600)
  • Sensor based 5-axis Image Stabilization
  • 1/8000s Max Shutter
  • 3840 x 2160 video
  • Sony E Mount
  • 699g - 129 x 97 x 81mm
  • Launched July 2020
  • Older Model is Sony A7S II
Sony RX100 III
(Full Review)
  • 20MP - 1" Sensor
  • 3" Tilting Screen
  • ISO 125 - 12800
  • Optical Image Stabilization
  • 1920 x 1080 video
  • 24-70mm (F1.8-2.8) lens
  • 290g - 102 x 58 x 41mm
  • Revealed May 2014
  • Replaced the Sony RX100 II
  • Renewed by Sony RX100 IV
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Sony A7S III vs Sony RX100 III Overview

Lets look a bit more in depth at the Sony A7S III and Sony RX100 III, one is a Pro Mirrorless and the latter is a Large Sensor Compact and both of them are sold by Sony. There exists a crucial gap among the sensor resolutions of the A7S III (12MP) and RX100 III (20MP) and the A7S III (Full frame) and RX100 III (1") come with different sensor size.

Photography Glossary

The A7S III was launched 6 years after the RX100 III which is a fairly serious gap as far as camera technology is concerned. Both cameras come with different body type with the Sony A7S III being a SLR-style mirrorless camera and the Sony RX100 III being a Large Sensor Compact camera.

Before going straight into a step-by-step comparison, below is a brief summary of how the A7S III scores against the RX100 III in terms of portability, imaging, features and an overall mark.

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Reasons to pick Sony A7S III over the Sony RX100 III

 A7S III RX100 III 
RevealedJuly 2020May 2014Newer by 76 months
Screen typeFully articulatedTiltingFully Articulating screen
Screen resolution1440k1229kSharper screen (+211k dot)
Touch screen Quickly navigate

Reasons to pick Sony RX100 III over the Sony A7S III

 RX100 III A7S III 

Common features in the Sony A7S III and Sony RX100 III

 A7S III RX100 III 
Manually focus More accurate focusing
Screen dimension3"3"Identical screen size
Selfie screen Both good for selfies

Sony A7S III vs Sony RX100 III Physical Comparison

If you're intending to travel with your camera regularly, you will want to think about its weight and measurements. The Sony A7S III comes with external measurements of 129mm x 97mm x 81mm (5.1" x 3.8" x 3.2") having a weight of 699 grams (1.54 lbs) while the Sony RX100 III has proportions of 102mm x 58mm x 41mm (4.0" x 2.3" x 1.6") along with a weight of 290 grams (0.64 lbs).

Contrast the Sony A7S III and Sony RX100 III in the new Camera with Lens Size Comparison Tool. Camera Size Comparison with Lenses

Bear in mind, the weight of an Interchangeable Lens Camera will vary based on the lens you have attached at that time. Below is the front view dimensions comparison of the A7S III vs the RX100 III.

Sony A7S III vs Sony RX100 III size comparison

Taking into consideration dimensions and weight, the portability rating of the A7S III and RX100 III is 61 and 89 respectively.

Sony A7S III vs Sony RX100 III top view buttons comparison

Sony A7S III vs Sony RX100 III Sensor Comparison

Sometimes, it is very tough to visualize the difference in sensor dimensions only by looking through specifications. The picture underneath will offer you a far better sense of the sensor sizing in the A7S III and RX100 III.

Plainly, both of those cameras have got different resolutions and different sensor dimensions. The A7S III because of its bigger sensor is going to make achieving shallower depth of field easier and the Sony RX100 III will result in more detail utilizing its extra 8MP. Higher resolution can also make it easier to crop pictures much more aggressively. The more recent A7S III provides a benefit with regard to sensor innovation.

Sony A7S III vs Sony RX100 III sensor size comparison

Sony A7S III vs Sony RX100 III Screen and ViewFinder

Sony A7S III vs Sony RX100 III Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Sony A7S III Portrait photography advice
Sony RX100 III Portrait photography advice
70
has manual focus
big sensor size (Full frame)
comes with face detect focusing
supports RAW formats
low resolution (12MP)
64
focusing manually
flash sync speed is above average (1/2,000s)
decent sensor resolution (20MP)
good sensor size (1")
supports face detect focusing
exports RAW formats
no external flash support
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Street Comparison

Sony A7S III Street photography factors
Sony RX100 III Street photography factors
76
built in image stabilization (Sensor based 5-axis)
big sensor size (Full frame)
supports RAW formats
includes touch to focus
weather proofing
above average ISO range (102,400)
85
screen tilts
built in image stabilization (Optical)
good sensor size (1")
exports RAW formats
lighter than competition (290 grams)
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Sports Comparison

Sony A7S III Sports photography info
Sony RX100 III Sports photography info
75
great max shutter speed (1/8,000 seconds)
built in image stabilization (Sensor based 5-axis)
big sensor size (Full frame)
comes with tracking focus
weather proofing
good battery pack (600 CIPA)
has phase detect AF
low resolution (12MP)
65
built in image stabilization (Optical)
decent sensor resolution (20 megapixels)
good sensor size (1")
supports tracking focus
does not have phase detect AF
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Travel Comparison

Sony A7S III Travel photography features
Sony RX100 III Travel photography features
70
good battery pack (600 shots)
weather proofing
supports bluetooth
includes touch to focus
display is selfie friendly
low resolution (12MP)
85
lighter than competition (290g)
decent sensor resolution (20 megapixels)
built-in flash
selfie friendly screen
pretty wide (24mm)
good max aperture (f1.8)
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Landscape Comparison

Sony A7S III Landscape photography advice
Sony RX100 III Landscape photography advice
77
has manual focus
switch lenses (Sony E mount)
nice screen size (3 inches)
built in image stabilization (Sensor based 5-axis)
big sensor size (Full frame)
above average ISO range (102,400)
supports RAW formats
weather proofing
good battery pack (600 shots)
two card slots
low resolution (12 megapixels)
73
focusing manually
pretty wide (24mm)
good max aperture (f1.8)
nice screen size (3")
built in image stabilization (Optical)
decent sensor resolution (20 megapixels)
good sensor size (1")
exports RAW formats
lens is fixed (fixed lens mount)
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Vlogging Comparison

Sony A7S III as a Vlogging camera
Sony RX100 III as a Vlogging camera
77
display is selfie friendly
has touchscreen
built in image stabilization (Sensor based 5-axis)
comes with face detect focusing
great video quality (3840 x 2160 resolution)
has microphone socket
80
pretty wide (24mm)
good max aperture (f1.8)
selfie friendly screen
built in image stabilization (Optical)
supports face detect focusing
great video quality (1920 x 1080 resolution)
lighter than competition (290g)
missing mic jack
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Sony A7S III vs Sony RX100 III Specifications

Detailed spec comparison table for Sony A7S III and Sony RX100 III
 Sony Alpha A7S IIISony Cyber-shot DSC-RX100 III
General Information
Make Sony Sony
Model type Sony Alpha A7S III Sony Cyber-shot DSC-RX100 III
Category Pro Mirrorless Large Sensor Compact
Launched 2020-07-21 2014-05-15
Body design SLR-style mirrorless Large Sensor Compact
Sensor Information
Processor Chip Bionz XR Bionz X
Sensor type BSI-CMOS BSI-CMOS
Sensor size Full frame 1"
Sensor dimensions 35.6 x 23.8mm 13.2 x 8.8mm
Sensor area 847.3mm² 116.2mm²
Sensor resolution 12 megapixel 20 megapixel
Anti alias filter
Aspect ratio 3:2 and 16:9 1:1, 4:3, 3:2 and 16:9
Full resolution 4240 x 2832 5472 x 3648
Max native ISO 102400 12800
Max boosted ISO 409600 -
Min native ISO 80 125
RAW support
Min boosted ISO 50 -
Autofocusing
Focus manually
Touch focus
Continuous autofocus
Single autofocus
Tracking autofocus
Selective autofocus
Center weighted autofocus
Autofocus multi area
Autofocus live view
Face detection focus
Contract detection focus
Phase detection focus
Total focus points 759 25
Lens
Lens support Sony E fixed lens
Lens zoom range - 24-70mm (2.9x)
Highest aperture - f/1.8-2.8
Macro focusing range - 5cm
Total lenses 121 -
Crop factor 1 2.7
Screen
Screen type Fully articulated Tilting
Screen diagonal 3 inches 3 inches
Screen resolution 1,440k dot 1,229k dot
Selfie friendly
Liveview
Touch operation
Viewfinder Information
Viewfinder Electronic Electronic
Viewfinder resolution 9,440k dot 1,440k dot
Viewfinder coverage 100 percent 100 percent
Viewfinder magnification 0.91x 0.59x
Features
Lowest shutter speed 30s 30s
Highest shutter speed 1/8000s 1/2000s
Continuous shooting speed 10.0 frames per sec 10.0 frames per sec
Shutter priority
Aperture priority
Expose Manually
Exposure compensation Yes Yes
Custom white balance
Image stabilization
Built-in flash
Flash distance no built-in flash -
Flash settings no built-in flash -
Hot shoe
Auto exposure bracketing
WB bracketing
Highest flash sync - 1/2000s
Exposure
Multisegment
Average
Spot
Partial
AF area
Center weighted
Video features
Video resolutions 3840 x 2160 @ 120p / 280 Mbps, XAVC S, MP4, H.265, Linear PCM 3840 x 2160 @ 100p / 280 Mbps, XAVC S, MP4, H.265, Linear PCM 3840 x 2160 @ 60p / 200 Mbps, XAVC S, MP4, H.265, Linear PCM 3840 x 2160 @ 50p / 200 Mbps, XAVC S, MP4, H.265, Linear PCM 3840 x 2160 @ 30p / 140 Mbps, XAVC S, MP4, H.265, Linear PCM 3840 x 2160 @ 25p / 140 Mbps, XAVC S, MP4, H.265, Linear PCM 3840 x 2160 @ 24p / 100 Mbps, XAVC S, MP4, H.265, Linear PCM 1920 x 1080 @ 120p / 100 Mbps, XAVC S, MP4, H.264, Linear PCM 1920 x 1080 @ 100p / 100 Mbps, XAVC S, MP4, H.264, Linear PCM 1920 x 1080 @ 60p / 50 Mbps, XAVC S, MP4, H.264, Linear PCM 1920 x 1080 @ 50p / 50 Mbps, XAVC S, MP4, H.264, Linear PCM 1920 x 1080 @ 25p / 50 Mbps, XAVC S, MP4, H.264, Linear PCM 1920 x 1080 @ 24p / 50 Mbps, XAVC S, MP4, H.264, Linear PCM 1920 x 1080 (60p/60i/24p), 1280 x 720 (60p/30p/24p/120p), 1440 x 1080 (30 fps), 640 x 480 (30 fps)
Max video resolution 3840x2160 1920x1080
Video data format MPEG-4, XAVC S, XAVC HS, XAVC S-1, H.264, H.265 MPEG-4, AVCHD, XAVC S
Mic input
Headphone input
Connectivity
Wireless Built-In Built-In
Bluetooth
NFC
HDMI
USB USB 3.2 Gen 1 (5 GBit/sec) USB 2.0 (480 Mbit/sec)
GPS None None
Physical
Environment seal
Water proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 699 gr (1.54 lbs) 290 gr (0.64 lbs)
Dimensions 129 x 97 x 81mm (5.1" x 3.8" x 3.2") 102 x 58 x 41mm (4.0" x 2.3" x 1.6")
DXO scores
DXO All around rating 85 67
DXO Color Depth rating 23.6 22.4
DXO Dynamic range rating 13.3 12.3
DXO Low light rating 2993 495
Other
Battery life 600 photographs 320 photographs
Type of battery Battery Pack Battery Pack
Battery ID NP-FZ100 NP-BX1
Self timer Yes (2 or 10 sec; continuous (3 or 5 exposures)) Yes (2 or 10 sec, self-portrait, continuous)
Time lapse shooting With downloadable app With downloadable app
Type of storage Dual SD/CFexpress Type A slots SD/ SDHC/SDXC, Memory Stick Pro Duo/ Pro-HG Duo
Storage slots Two One
Launch price $3,499 $748