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Sony A7 III vs Sony RX100

Portability
63
Imaging
74
Features
92
Overall
81
Sony Alpha A7 III front
 
Sony Cyber-shot DSC-RX100 front
Portability
91
Imaging
50
Features
68
Overall
57

Sony A7 III vs Sony RX100 Key Specs

Sony A7 III
(Full Review)
  • 24MP - Full frame Sensor
  • 3" Tilting Screen
  • ISO 100 - 51200 (Push to 204800)
  • Sensor based 5-axis Image Stabilization
  • 1/8000s Max Shutter
  • 3840 x 2160 video
  • Sony E Mount
  • 650g - 127 x 96 x 74mm
  • Released February 2018
  • Previous Model is Sony A7 II
  • Replacement is Sony A7 IV
Sony RX100
(Full Review)
  • 20MP - 1" Sensor
  • 3" Fixed Screen
  • ISO 100 - 25600
  • Optical Image Stabilization
  • 1920 x 1080 video
  • 28-100mm (F1.8-4.9) lens
  • 240g - 102 x 58 x 36mm
  • Revealed August 2012
  • Replacement is Sony RX100 II
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Sony A7 III vs Sony RX100 Overview

Following is a in depth comparison of the Sony A7 III versus Sony RX100, one is a Pro Mirrorless and the latter is a Large Sensor Compact and they are both produced by Sony. The resolution of the A7 III (24MP) and the RX100 (20MP) is pretty similar but the A7 III (Full frame) and RX100 (1") come with totally different sensor dimensions.

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The A7 III was announced 5 years after the RX100 which is quite a large gap as far as technology is concerned. Both cameras offer different body type with the Sony A7 III being a SLR-style mirrorless camera and the Sony RX100 being a Large Sensor Compact camera.

Before going through a comprehensive comparison, below is a concise summary of how the A7 III scores versus the RX100 when it comes to portability, imaging, features and an overall score.

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Reasons to pick Sony A7 III over the Sony RX100

 A7 III RX100 
RevealedFebruary 2018August 2012More modern by 67 months
Screen typeTiltingFixed Tilting screen
Touch friendly screen Quickly navigate

Reasons to pick Sony RX100 over the Sony A7 III

 RX100 A7 III 
Screen resolution1229k922kClearer screen (+307k dot)

Common features in the Sony A7 III and Sony RX100

 A7 III RX100 
Manual focus More accurate focus
Screen sizing3"3"Equivalent screen sizing
Selfie screen Lack of selfie screen

Sony A7 III vs Sony RX100 Physical Comparison

For anybody who is going to carry around your camera regularly, you're going to have to factor in its weight and volume. The Sony A7 III has outer dimensions of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") along with a weight of 650 grams (1.43 lbs) and the Sony RX100 has sizing of 102mm x 58mm x 36mm (4.0" x 2.3" x 1.4") and a weight of 240 grams (0.53 lbs).

Look at the Sony A7 III versus Sony RX100 in the latest Camera and Lens Size Comparison Tool. Camera Size Comparison with Lenses

Take into consideration, the weight of an Interchangeable Lens Camera will vary depending on the lens you have chosen at the time. Below is the front view measurement comparison of the A7 III vs the RX100.

Sony A7 III vs Sony RX100 size comparison

Taking into account dimensions and weight, the portability grade of the A7 III and RX100 is 63 and 91 respectively.

Sony A7 III vs Sony RX100 top view buttons comparison

Sony A7 III vs Sony RX100 Sensor Comparison

Normally, it is very tough to visualise the gap between sensor sizes only by reviewing specs. The picture below will provide you a much better sense of the sensor dimensions in the A7 III and RX100.

As you can plainly see, the 2 cameras offer different megapixels and different sensor sizes. The A7 III having a bigger sensor will make shooting shallower depth of field simpler and the Sony A7 III will offer greater detail with its extra 4MP. Higher resolution can also let you crop pictures a little more aggressively. The newer A7 III will have an advantage in sensor innovation.

Sony A7 III vs Sony RX100 sensor size comparison

Sony A7 III vs Sony RX100 Screen and ViewFinder

Sony A7 III vs Sony RX100 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Sony A7 III Portrait photography features
Sony RX100 Portrait photography features
84
focusing manually
MP count good (24MP)
sensor size is great (Full frame)
offers face detect focus
supports RAW formats
64
you can focus manually
flash sync speed is above average (1/2,000s)
megapixel count decent (20MP)
nice sensor size (1")
provides face detection autofocus
delivers RAW files
can't use external flash
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Street Comparison

Sony A7 III as a Street photography camera
Sony RX100 as a Street photography camera
78
has a tilting screen
has image stabilization (Sensor based 5-axis)
sensor size is great (Full frame)
supports RAW formats
comes with touch focus
environment proofing
above average ISO range (51,200)
79
has image stabilization (Optical)
nice sensor size (1")
delivers RAW files
lighter than average (240g)
above average ISO range (25,600)
screen does not articulate
Photography Glossary

Sports Comparison

Sony A7 III Sports photography details
Sony RX100 Sports photography details
87
max shutter speed is good (1/8,000s)
has image stabilization (Sensor based 5-axis)
MP count good (24 megapixels)
sensor size is great (Full frame)
offers tracking focus
environment proofing
good battery pack (610 per charge)
comes with phase detect auto focus
65
has image stabilization (Optical)
megapixel count decent (20 megapixels)
nice sensor size (1")
provides tracking autofocus
no phase detect autofocus
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Travel Comparison

Sony A7 III Travel photography advice
Sony RX100 Travel photography advice
73
good battery pack (610 CIPA)
environment proofing
supports bluetooth
comes with touch focus
MP count good (24 megapixels)
display is not selfie friendly
79
lighter than average (240g)
megapixel count decent (20 megapixels)
has built in flash
reasonably wide (28mm)
fast max aperture (f1.8)
does not offer selfie friendly screen
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Landscape Comparison

Sony A7 III Landscape photography information
Sony RX100 Landscape photography information
85
focusing manually
interchangeable lenses (Sony E mount)
good sized screen (3 inch)
has image stabilization (Sensor based 5-axis)
MP count good (24 megapixels)
sensor size is great (Full frame)
above average ISO range (51,200)
supports RAW formats
environment proofing
good battery pack (610 per charge)
two card slots
74
you can focus manually
reasonably wide (28mm)
fast max aperture (f1.8)
nice screen size (3 inches)
has image stabilization (Optical)
megapixel count decent (20 megapixels)
nice sensor size (1")
above average ISO range (25,600)
delivers RAW files
lens is fixed (fixed lens mount)
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Vlogging Comparison

Sony A7 III Vlogging factors
Sony RX100 Vlogging factors
36
touch screen
has image stabilization (Sensor based 5-axis)
offers face detect focus
video res high (3840 x 2160 pxls)
does have microphone socket
display is not selfie friendly
38
reasonably wide (28mm)
fast max aperture (f1.8)
has image stabilization (Optical)
provides face detection autofocus
high quality video (1920 x 1080 pxls)
lighter than average (240 grams)
does not offer selfie friendly screen
does not have external mic socket
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Sony A7 III vs Sony RX100 Specifications

Detailed spec comparison table for Sony A7 III and Sony RX100
 Sony Alpha A7 IIISony Cyber-shot DSC-RX100
General Information
Brand Name Sony Sony
Model Sony Alpha A7 III Sony Cyber-shot DSC-RX100
Type Pro Mirrorless Large Sensor Compact
Released 2018-02-27 2012-08-28
Physical type SLR-style mirrorless Large Sensor Compact
Sensor Information
Chip Bionz X -
Sensor type BSI-CMOS CMOS
Sensor size Full frame 1"
Sensor dimensions 35.8 x 23.8mm 13.2 x 8.8mm
Sensor area 852.0mm² 116.2mm²
Sensor resolution 24 megapixels 20 megapixels
Anti aliasing filter
Aspect ratio 3:2 and 16:9 1:1, 4:3, 3:2 and 16:9
Max resolution 6000 x 4000 5472 x 3648
Max native ISO 51200 25600
Max enhanced ISO 204800 -
Min native ISO 100 100
RAW support
Min enhanced ISO 50 -
Autofocusing
Manual focus
Autofocus touch
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
Number of focus points 693 25
Lens
Lens mount Sony E fixed lens
Lens focal range - 28-100mm (3.6x)
Highest aperture - f/1.8-4.9
Macro focus distance - 5cm
Amount of lenses 121 -
Focal length multiplier 1 2.7
Screen
Type of screen Tilting Fixed Type
Screen sizing 3 inch 3 inch
Screen resolution 922k dots 1,229k dots
Selfie friendly
Liveview
Touch operation
Screen technology - WhiteMagic TFT LCD
Viewfinder Information
Viewfinder Electronic None
Viewfinder resolution 2,359k dots -
Viewfinder coverage 100 percent -
Viewfinder magnification 0.78x -
Features
Minimum shutter speed 30 seconds 30 seconds
Fastest shutter speed 1/8000 seconds 1/2000 seconds
Continuous shutter rate 10.0 frames/s 10.0 frames/s
Shutter priority
Aperture priority
Manually set exposure
Exposure compensation Yes Yes
Set white balance
Image stabilization
Built-in flash
Flash range no built-in flash -
Flash settings no built-in flash Auto, On, Off, Slow Sync
Hot shoe
Auto exposure bracketing
White balance bracketing
Fastest flash synchronize - 1/2000 seconds
Exposure
Multisegment exposure
Average exposure
Spot exposure
Partial exposure
AF area exposure
Center weighted exposure
Video features
Video resolutions 3840 x 2160 (30p, 24p) 1920 x 1080 (120p, 60p, 60i, 24p), 1440 x 1080 (30p), 640 x 480 (30p) 1920 x 1080 (60 fps), 1440 x 1080 (30 fps), 1280 x 720 (30 fps), 640 x 480 (30 fps)
Max video resolution 3840x2160 1920x1080
Video format MPEG-4, AVCHD, XAVC S, H.264 MPEG-4, AVCHD
Mic port
Headphone port
Connectivity
Wireless Built-In Eye-Fi Connected
Bluetooth
NFC
HDMI
USB USB 3.1 Gen 1 (5 GBit/sec) USB 2.0 (480 Mbit/sec)
GPS None None
Physical
Environmental sealing
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 650 grams (1.43 lb) 240 grams (0.53 lb)
Dimensions 127 x 96 x 74mm (5.0" x 3.8" x 2.9") 102 x 58 x 36mm (4.0" x 2.3" x 1.4")
DXO scores
DXO Overall score 96 66
DXO Color Depth score 25.0 22.6
DXO Dynamic range score 14.7 12.4
DXO Low light score 3730 390
Other
Battery life 610 photographs 330 photographs
Type of battery Battery Pack Battery Pack
Battery model NP-FZ100 NP-BX1
Self timer Yes (2 or 10 sec; continuous (3 or 5 exposures)) Yes (2 or 10 sec, Portrait 1/2)
Time lapse recording With downloadable app
Type of storage SD/SDHC/SDXC, Memory Stick Duo/Pro Duo/Pro-HG Duo SD/SDHC/SDXC, Memory Stick Duo/Pro Duo/Pro-HG Duo
Card slots Two Single
Price at release $1,998 $448