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Olympus TG-870 vs Sony A7R III

Portability
91
Imaging
41
Features
46
Overall
43
Olympus Stylus Tough TG-870 front
 
Sony Alpha A7R III front
Portability
63
Imaging
78
Features
93
Overall
84

Olympus TG-870 vs Sony A7R III Key Specs

Olympus TG-870
(Full Review)
  • 16MP - 1/2.3" Sensor
  • 3" Tilting Screen
  • ISO 125 - 6400 (Bump to 12800)
  • Optical Image Stabilization
  • 1920 x 1080 video
  • 21-105mm (F3.5-5.7) lens
  • 221g - 113 x 64 x 28mm
  • Introduced January 2016
  • Previous Model is Olympus TG-860
Sony A7R III
(Full Review)
  • 42MP - Full frame Sensor
  • 3" Tilting Display
  • ISO 100 - 32000 (Raise to 102400)
  • Sensor based 5-axis Image Stabilization
  • No Anti-Alias Filter
  • 1/8000s Maximum Shutter
  • 3840 x 2160 video
  • Sony E Mount
  • 657g - 127 x 96 x 74mm
  • Released October 2017
  • Succeeded the Sony A7R II
  • Updated by Sony A7R IV
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Olympus TG-870 vs Sony A7R III Overview

Lets examine more in depth at the Olympus TG-870 versus Sony A7R III, former is a Ultracompact while the other is a Pro Mirrorless by competitors Olympus and Sony. There exists a sizable gap among the sensor resolutions of the TG-870 (16MP) and A7R III (42MP) and the TG-870 (1/2.3") and A7R III (Full frame) come with different sensor size.

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The TG-870 was announced 21 months earlier than the A7R III making the cameras a generation away from one another. Both the cameras come with different body type with the Olympus TG-870 being a Ultracompact camera and the Sony A7R III being a SLR-style mirrorless camera.

Before delving through a comprehensive comparison, below is a brief overview of how the TG-870 grades vs the A7R III in relation to portability, imaging, features and an overall mark.

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Reasons to pick Olympus TG-870 over the Sony A7R III

 TG-870 A7R III 

Reasons to pick Sony A7R III over the Olympus TG-870

 A7R III TG-870 
ReleasedOctober 2017January 2016Newer by 21 months
Manual focus Dial precise focus
Display resolution1440k921kCrisper display (+519k dot)
Touch display Easily navigate

Common features in the Olympus TG-870 and Sony A7R III

 TG-870 A7R III 
Display typeTiltingTiltingTilting display
Display dimension3"3"Identical display size
Selfie screen Lacking selfie screen

Olympus TG-870 vs Sony A7R III Physical Comparison

If you are intending to travel with your camera frequently, you will need to take into account its weight and proportions. The Olympus TG-870 has got outside measurements of 113mm x 64mm x 28mm (4.4" x 2.5" x 1.1") and a weight of 221 grams (0.49 lbs) whilst the Sony A7R III has measurements of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") and a weight of 657 grams (1.45 lbs).

Take a look at the Olympus TG-870 versus Sony A7R III in our brand new Camera plus Lens Size Comparison Tool. Camera Size Comparison with Lenses

Always remember, the weight of an ILC will differ dependant on the lens you have at that time. Following is the front view dimensions comparison of the TG-870 versus the A7R III.

Olympus TG-870 vs Sony A7R III size comparison

Looking at dimensions and weight, the portability rating of the TG-870 and A7R III is 91 and 63 respectively.

Olympus TG-870 vs Sony A7R III top view buttons comparison

Olympus TG-870 vs Sony A7R III Sensor Comparison

Normally, its hard to picture the difference in sensor dimensions merely by looking through technical specs. The image underneath should provide you a better sense of the sensor measurements in the TG-870 and A7R III.

As you have seen, the 2 cameras posses different resolutions and different sensor dimensions. The TG-870 with its smaller sensor is going to make shooting shallow DOF trickier and the Sony A7R III will result in extra detail with its extra 26MP. Greater resolution will also enable you to crop images somewhat more aggressively. The more aged TG-870 will be behind when it comes to sensor tech.

Olympus TG-870 vs Sony A7R III sensor size comparison

Olympus TG-870 vs Sony A7R III Screen and ViewFinder

Olympus TG-870 vs Sony A7R III Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Olympus TG-870 Portrait photography information
Sony A7R III Portrait photography information
36
decent megapixels (16MP)
supports face detect focus
focusing manually not possible
no manual control
external flash not possible
very small sensor size (1/2.3")
no RAW format
86
you can focus manually
high sensor resolution (42 megapixels)
large sensor size (Full frame)
features face detect focus
exports RAW files
Photography Glossary

Street Comparison

Olympus TG-870 Street photography details
Sony A7R III Street photography details
65
screen tilts up and down
built in image stabilization (Optical)
environment proofing
very small sensor size (1/2.3")
no RAW format
more heavy than competitors (221 grams)
79
has a tilting screen
image stabilization (Sensor based 5-axis)
large sensor size (Full frame)
exports RAW files
features touch focus
weather proof
above average high ISO (32,000)
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Sports Comparison

Olympus TG-870 Sports photography advice
Sony A7R III Sports photography advice
51
built in image stabilization (Optical)
decent megapixels (16 megapixels)
supports tracking focus
environment proofing
better than average battery pack (300 per charge)
no shutter priority mode
very small sensor size (1/2.3")
no phase detect auto focus
89
max shutter speed is good (1/8,000 seconds)
image stabilization (Sensor based 5-axis)
high sensor resolution (42MP)
large sensor size (Full frame)
features tracking focus
weather proof
great battery power (650 per charge)
supports phase detect auto focus
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Travel Comparison

Olympus TG-870 as a Travel photography camera
Sony A7R III as a Travel photography camera
69
better than average battery pack (300 CIPA)
environment proofing
decent megapixels (16 megapixels)
has built in flash
pretty wide (21mm)
more heavy than competitors (221g)
does not contain selfie friendly screen
sluggish max aperture (f3.5)
74
great battery power (650 per charge)
weather proof
has bluetooth
features touch focus
high sensor resolution (42MP)
doesn't offer selfie friendly screen
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Landscape Comparison

Olympus TG-870 Landscape photography info
Sony A7R III Landscape photography info
50
pretty wide (21mm)
decent sized screen (3 inch)
built in image stabilization (Optical)
decent megapixels (16MP)
environment proofing
better than average battery pack (300 CIPA)
focusing manually not possible
lens is fixed (fixed lens mount)
sluggish max aperture (f3.5)
no manual control
very small sensor size (1/2.3")
no RAW format
87
you can focus manually
change lenses (Sony E mount)
nice screen size (3")
image stabilization (Sensor based 5-axis)
high sensor resolution (42MP)
large sensor size (Full frame)
doesnt have anti-alias filter
above average high ISO (32,000)
exports RAW files
weather proof
great battery power (650 CIPA)
two card slots
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Vlogging Comparison

Vlogging with Olympus TG-870
Vlogging with Sony A7R III
32
pretty wide (21mm)
built in image stabilization (Optical)
supports face detect focus
high quality video (1920 x 1080 pixels)
sluggish max aperture (f3.5)
does not contain selfie friendly screen
doesn't have microphone jack
more heavy than competitors (221 grams)
37
touchscreen enabled
image stabilization (Sensor based 5-axis)
features face detect focus
high video quality (3840 x 2160 pixels)
comes with microphone socket
doesn't offer selfie friendly screen
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Olympus TG-870 vs Sony A7R III Specifications

Detailed spec comparison table for Olympus TG-870 and Sony A7R III
 Olympus Stylus Tough TG-870Sony Alpha A7R III
General Information
Brand Olympus Sony
Model Olympus Stylus Tough TG-870 Sony Alpha A7R III
Category Ultracompact Pro Mirrorless
Introduced 2016-01-06 2017-10-25
Physical type Ultracompact SLR-style mirrorless
Sensor Information
Processor TruePic VII Bionz X
Sensor type BSI-CMOS BSI-CMOS
Sensor size 1/2.3" Full frame
Sensor measurements 6.17 x 4.55mm 35.9 x 24mm
Sensor area 28.1mm² 861.6mm²
Sensor resolution 16 megapixels 42 megapixels
Anti aliasing filter
Aspect ratio 1:1, 4:3, 3:2 and 16:9 3:2 and 16:9
Full resolution 4608 x 3456 7952 x 5304
Max native ISO 6400 32000
Max boosted ISO 12800 102400
Lowest native ISO 125 100
RAW photos
Lowest boosted ISO - 50
Autofocusing
Manual focus
Touch focus
Continuous autofocus
Single autofocus
Autofocus tracking
Selective autofocus
Center weighted autofocus
Autofocus multi area
Autofocus live view
Face detection autofocus
Contract detection autofocus
Phase detection autofocus
Number of focus points - 425
Lens
Lens mount fixed lens Sony E
Lens focal range 21-105mm (5.0x) -
Maximal aperture f/3.5-5.7 -
Macro focus range 1cm -
Available lenses - 121
Crop factor 5.8 1
Screen
Type of screen Tilting Tilting
Screen sizing 3 inch 3 inch
Screen resolution 921 thousand dots 1,440 thousand dots
Selfie friendly
Liveview
Touch capability
Viewfinder Information
Viewfinder None Electronic
Viewfinder resolution - 3,686 thousand dots
Viewfinder coverage - 100%
Viewfinder magnification - 0.78x
Features
Lowest shutter speed 4s 30s
Highest shutter speed 1/2000s 1/8000s
Continuous shooting rate 7.0 frames/s 10.0 frames/s
Shutter priority
Aperture priority
Manual mode
Exposure compensation - Yes
Custom white balance
Image stabilization
Integrated flash
Flash range 4.00 m (at ISO 1600) no built-in flash
Flash options Auto, redeye reduction, fill flash, off, LED illuminator Off, Auto, Fill-flash, Slow Sync, Rear Sync, Red-eye reduction, Wireless, Hi-speed sync
Hot shoe
AEB
White balance bracketing
Exposure
Multisegment exposure
Average exposure
Spot exposure
Partial exposure
AF area exposure
Center weighted exposure
Video features
Video resolutions 1920 x 1080 (60p), 1280 x 720 (60p), 640 x 480 (60p) 3840 x 2160 (30p, 25p, 24p), 1920 x 1080 (60p, 60i, 24p), 1440 x 1080 (30p), 640 x 480 (30p)
Max video resolution 1920x1080 3840x2160
Video format MPEG-4, H.264 MPEG-4, AVCHD, XAVC S
Microphone port
Headphone port
Connectivity
Wireless Built-In Built-In
Bluetooth
NFC
HDMI
USB USB 2.0 (480 Mbit/sec) USB 3.1 Gen 1(5 GBit/sec)
GPS BuiltIn None
Physical
Environment sealing
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 221 gr (0.49 pounds) 657 gr (1.45 pounds)
Dimensions 113 x 64 x 28mm (4.4" x 2.5" x 1.1") 127 x 96 x 74mm (5.0" x 3.8" x 2.9")
DXO scores
DXO All around score not tested 100
DXO Color Depth score not tested 26.0
DXO Dynamic range score not tested 14.7
DXO Low light score not tested 3523
Other
Battery life 300 pictures 650 pictures
Battery type Battery Pack Battery Pack
Battery model Li-50B NP-FZ100
Self timer Yes (2 or 10 sec, custom) Yes (2 or 10 sec; continuous (3 or 5 exposures))
Time lapse shooting
Type of storage SD/SDHC/SDXC, Internal Two SD/SDHC/SDXC slots (UHS-II support on one)
Card slots Single Dual
Price at launch $280 $2,800