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Ricoh GR III vs Sony a5100

Portability
90
Imaging
69
Features
62
Overall
66
Ricoh GR III front
 
Sony Alpha a5100 front
Portability
89
Imaging
66
Features
74
Overall
69

Ricoh GR III vs Sony a5100 Key Specs

Ricoh GR III
(Full Review)
  • 24MP - APS-C Sensor
  • 3" Fixed Screen
  • ISO 100 - 102400
  • Sensor-shift Image Stabilization
  • No Anti-Alias Filter
  • 1920 x 1080 video
  • 28mm (F2.8-16) lens
  • 257g - 109 x 62 x 33mm
  • Released September 2018
  • Older Model is Ricoh GR III
  • Newer Model is Ricoh GR III
Sony a5100
(Full Review)
  • 24MP - APS-C Sensor
  • 3" Tilting Screen
  • ISO 100 - 25600
  • 1920 x 1080 video
  • Sony E Mount
  • 283g - 110 x 63 x 36mm
  • Revealed August 2014
  • Earlier Model is Sony a5000
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Ricoh GR III vs Sony a5100 Overview

Its time to examine more closely at the Ricoh GR III and Sony a5100, former being a Large Sensor Compact while the latter is a Entry-Level Mirrorless by brands Ricoh and Sony. The resolution of the GR III (24MP) and the a5100 (24MP) is pretty similar and they come with the same exact sensor dimensions (APS-C).

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The GR III was unveiled 4 years later than the a5100 and that is quite a sizable difference as far as tech is concerned. Both of these cameras offer different body type with the Ricoh GR III being a Large Sensor Compact camera and the Sony a5100 being a Rangefinder-style mirrorless camera.

Before going straight into a in-depth comparison, below is a short view of how the GR III scores versus the a5100 in regards to portability, imaging, features and an overall grade.

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Reasons to pick Ricoh GR III over the Sony a5100

 GR III a5100 
RevealedSeptember 2018August 2014More recent by 50 months
Screen resolution1037k922kSharper screen (+115k dot)

Reasons to pick Sony a5100 over the Ricoh GR III

 a5100 GR III 
Screen typeTiltingFixed Tilting screen

Common features in the Ricoh GR III and Sony a5100

 GR III a5100 
Manually focus Very precise focus
Screen sizing3"3"Equivalent screen sizing
Selfie screen Neither includes selfie screen
Touch screen Quickly navigate

Ricoh GR III vs Sony a5100 Physical Comparison

For those who are going to lug around your camera often, you'll have to think about its weight and dimensions. The Ricoh GR III features physical dimensions of 109mm x 62mm x 33mm (4.3" x 2.4" x 1.3") with a weight of 257 grams (0.57 lbs) and the Sony a5100 has dimensions of 110mm x 63mm x 36mm (4.3" x 2.5" x 1.4") and a weight of 283 grams (0.62 lbs).

Check out the Ricoh GR III and Sony a5100 in our completely new Camera & Lens Size Comparison Tool. Camera Size Comparison with Lenses

Bear in mind, the weight of an ILC will differ based on the lens you are using during that time. Here is the front view dimensions comparison of the GR III against the a5100.

Ricoh GR III vs Sony a5100 size comparison

Using size and weight, the portability grade of the GR III and a5100 is 90 and 89 respectively.

Ricoh GR III vs Sony a5100 top view buttons comparison

Ricoh GR III vs Sony a5100 Sensor Comparison

In many cases, it can be difficult to picture the difference between sensor measurements simply by reading specifications. The graphic underneath may offer you a better sense of the sensor sizes in the GR III and a5100.

Plainly, each of the cameras offer the same exact sensor sizing and the same exact MP and you can expect similar quality of files although you might want to take the launch date of the products into consideration. The more modern GR III should have a benefit with regard to sensor tech.

Ricoh GR III vs Sony a5100 sensor size comparison

Ricoh GR III vs Sony a5100 Screen and ViewFinder

Ricoh GR III vs Sony a5100 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Ricoh GR III Portrait photography details
Sony a5100 Portrait photography details
81
you can focus manually
sensor resolution is decent (24 megapixels)
nice sensor size (APS-C)
comes with face detect focus
saves RAW files
72
has manual focus
decent megapixels (24 megapixels)
sensor size is decent (APS-C)
features face detection focus
exports RAW formats
cannot use external flash
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Street Comparison

Ricoh GR III Street photography features
Sony a5100 Street photography features
84
has image stabilization (Sensor-shift)
nice sensor size (APS-C)
saves RAW files
comes with touch to focus
lighter than competition in class (257g)
great ISO range (102,400)
no moving screen
82
has a tilting screen
sensor size is decent (APS-C)
exports RAW formats
provides touch focus
good ISO range (25,600)
lack of image stabilization
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Sports Comparison

Ricoh GR III as a Sports photography camera
Sony a5100 as a Sports photography camera
76
has image stabilization (Sensor-shift)
sensor resolution is decent (24MP)
nice sensor size (APS-C)
comes with tracking focus
comes with phase detect auto focus
can't change focal length (28mm)
68
decent megapixels (24 megapixels)
sensor size is decent (APS-C)
features tracking autofocus
good battery power (400 shots)
comes with phase detect auto focus
continuous shooting slow (6.0 frames/s)
lack of image stabilization
Photography Glossary

Travel Comparison

Ricoh GR III Travel photography features
Sony a5100 Travel photography features
69
lighter than competition in class (257 grams)
comes with touch to focus
sensor resolution is decent (24 megapixels)
lack of Time Lapse function
screen isn't selfie friendly
somewhat slow maximum aperture (f2.8)
80
good battery power (400 shots)
provides touch focus
decent megapixels (24 megapixels)
flash built-in
screen is not selfie friendly
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Landscape Comparison

Ricoh GR III Landscape photography features
Sony a5100 Landscape photography features
69
you can focus manually
screen is a decent size (3")
has image stabilization (Sensor-shift)
sensor resolution is decent (24 megapixels)
nice sensor size (APS-C)
does not have anti-alias filter
great ISO range (102,400)
saves RAW files
fixed lens (fixed lens mount)
can't change focal length (28mm)
somewhat slow maximum aperture (f2.8)
lack of Time Lapse function
79
has manual focus
change lenses (Sony E mount)
decent sized screen (3 inches)
decent megapixels (24 megapixels)
sensor size is decent (APS-C)
good ISO range (25,600)
exports RAW formats
good battery power (400 per charge)
lack of image stabilization
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Vlogging Comparison

Ricoh GR III as a Vlogging camera
Sony a5100 as a Vlogging camera
37
touchscreen
has image stabilization (Sensor-shift)
comes with face detect focus
good video quality (1920 x 1080 resolution)
lighter than competition in class (257g)
somewhat slow maximum aperture (f2.8)
screen isn't selfie friendly
lack of mic support
34
screen is touchscreen
features face detection focus
high res video (1920 x 1080 resolution)
screen is not selfie friendly
lack of image stabilization
missing external microphone jack
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Ricoh GR III vs Sony a5100 Specifications

Detailed spec comparison table for Ricoh GR III and Sony a5100
 Ricoh GR IIISony Alpha a5100
General Information
Make Ricoh Sony
Model type Ricoh GR III Sony Alpha a5100
Category Large Sensor Compact Entry-Level Mirrorless
Released 2018-09-25 2014-08-17
Body design Large Sensor Compact Rangefinder-style mirrorless
Sensor Information
Powered by - Bionz X
Sensor type CMOS CMOS
Sensor size APS-C APS-C
Sensor measurements 23.5 x 15.6mm 23.5 x 15.6mm
Sensor surface area 366.6mm² 366.6mm²
Sensor resolution 24 megapixels 24 megapixels
Anti alias filter
Aspect ratio 1:1 and 3:2 3:2 and 16:9
Maximum resolution 6000 x 4000 6000 x 4000
Maximum native ISO 102400 25600
Min native ISO 100 100
RAW files
Autofocusing
Manual focusing
Autofocus touch
Autofocus continuous
Autofocus single
Autofocus tracking
Selective autofocus
Autofocus center weighted
Multi area autofocus
Autofocus live view
Face detection focus
Contract detection focus
Phase detection focus
Total focus points - 179
Lens
Lens support fixed lens Sony E
Lens zoom range 28mm (1x) -
Maximal aperture f/2.8-16 -
Macro focusing distance 6cm -
Number of lenses - 121
Crop factor 1.5 1.5
Screen
Range of screen Fixed Type Tilting
Screen sizing 3" 3"
Resolution of screen 1,037k dot 922k dot
Selfie friendly
Liveview
Touch function
Viewfinder Information
Viewfinder type Optical (optional) None
Features
Lowest shutter speed 30 secs 30 secs
Highest shutter speed 1/4000 secs 1/4000 secs
Continuous shooting speed - 6.0 frames/s
Shutter priority
Aperture priority
Manually set exposure
Exposure compensation Yes Yes
Change white balance
Image stabilization
Built-in flash
Flash distance no built-in flash 4.00 m (at ISO 100)
Flash modes Auto, Flash On, Flash On+Red-eye, Slow-speed Sync, Slow Sync+Red-eye Flash off, auto, fill-flaw, slow sync, redeye reduction
Hot shoe
Auto exposure bracketing
WB bracketing
Exposure
Multisegment exposure
Average exposure
Spot exposure
Partial exposure
AF area exposure
Center weighted exposure
Video features
Supported video resolutions 1920 x 1080 @ 60p, MOV, H.264, Linear PCM 1920 x 1080 (60p, 60i, 24p), 1440 x 1080 (30p, 25p), 1280 x 720 (120p), 640 x 480 (30p, 25p)
Maximum video resolution 1920x1080 1920x1080
Video data format MPEG-4, H.264 MPEG-4, AVCHD, XAVC S
Microphone input
Headphone input
Connectivity
Wireless Built-In Built-In
Bluetooth
NFC
HDMI
USB Yes USB 2.0 (480 Mbit/sec)
GPS None None
Physical
Environment seal
Water proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 257 grams (0.57 lb) 283 grams (0.62 lb)
Dimensions 109 x 62 x 33mm (4.3" x 2.4" x 1.3") 110 x 63 x 36mm (4.3" x 2.5" x 1.4")
DXO scores
DXO All around rating not tested 80
DXO Color Depth rating not tested 23.8
DXO Dynamic range rating not tested 12.7
DXO Low light rating not tested 1347
Other
Battery life - 400 pictures
Style of battery - Battery Pack
Battery ID - NP-FW50
Self timer Yes Yes (2 or 10 sec, continuous (3-5 shot))
Time lapse feature With downloadable app
Storage media Internal, SD/SDHC/SDXC (UHS-I supported) SD/ SDHC/SDXC, Memory Stick Pro Duo/ Pro-HG Duo
Storage slots 1 1
Cost at launch $900 $448