CameraDecision
  • CAMERAS
    • All Cameras
    • Cameras by Brand
      • Sony Cameras
      • Canon Cameras
      • Nikon Cameras
      • Pentax Cameras
      • Fujifilm Cameras
      • Olympus Cameras
      • OM-System Cameras
      • Panasonic Cameras
      • Leica Cameras
    • Cameras by Body Type
      • Mirrorless Cameras
      • DSLR Cameras
      • Compact Cameras
      • Bridge Cameras
      • Waterproof Cameras
    • Cameras by Lens Mount
      • Sony E Mount Cameras
      • Canon RF Mount Cameras
      • Nikon Z Mount Cameras
      • Micro Four Thirds Mount Cameras
      • Fujifilm X Mount Cameras
      • Leica L Mount Cameras
      • Nikon F Mount Cameras
      • Canon EF Mount Cameras
      • Canon EF M Mount Cameras
      • Canon EF S Mount Cameras
      • Pentax KAF Mount Cameras
      • Sony Alpha Mount Cameras
      • Fujifilm G Mount Cameras
      • Sigma SA Mount Cameras
      • Nikon 1 Mount Cameras
  • LENSES
    • All Lenses
    • Lenses by Mount
      • Sony E Mount Lenses
      • Canon RF Mount Lenses
      • Nikon Z Mount Lenses
      • Canon EF Mount Lenses
      • Canon EF M Mount Lenses
      • Canon EF S Mount Lenses
      • Nikon F Mount Lenses
      • Fujifilm X Mount Lenses
      • Micro Four Thirds Mount Lenses
      • Leica L Mount Lenses
      • Pentax KAF Mount Lenses
      • Fujifilm G Mount Lenses
      • Sigma SA Mount Lenses
      • Sony Alpha Mount Lenses
    • Teleconverters
    • Cinema Lenses
      • Mount Cine Lenses
      • Mount Cine Lenses
      • Mount Cine Lenses
      • Mount Cine Lenses
      • Mount Cine Lenses
      • Mount Cine Lenses
      • Mount Cine Lenses
      • Mount Cine Lenses
      • Mount Cine Lenses
  • TOOLS
    • Cameras
      • Smart Find
      • 1-on-1 Comparison
    • Lenses
      • Smart Find
      • 1-on-1 Comparison
  • BLOG

Olympus E-M10 IV vs Ricoh GR III Comparison

x
Camera to replace
Change

Olympus E-M10 IV

20 MP | Four Thirds (17.4 x 13 mm) CMOS Sensor

Olympus E-M10 IV
CHECK PRICE
CHECK PRICE
Change

Ricoh GR III

24 MP | APS-C (23.5 x 15.6 mm) CMOS Sensor

Ricoh GR III
CHECK PRICE
CHECK PRICE
Olympus E-M10 IV vs Ricoh GR III Comparison Overview

Here we are comparing two cameras with different body types: Olympus E-M10 IV, which was introduced in August 2020 is a Entry-Level Mirrorless camera with a 20.0MP Four Thirds sensor whereas Ricoh GR III, which was introduced in September 2018 is a Large Sensor Compact camera with a 24.0MP APS-C sensor. There is 22 months difference between E-M10 IV and GR III so we don't expect to see a huge technology difference between these two cameras but it would still give an advantage to younger E-M10 IV, especially in sensor tech.

Comparing an interchangeble lens camera to a fixed lens camera is a bit tricky but we will do our best to make this a fair comparison.

Here is a brief look at the main features of Olympus E-M10 IV and Ricoh GR III before getting into our more detailed comparison.

Olympus E-M10 IV Key Specs

  • Announcement Date: 2020-08-04
  • 20MP - Four Thirds CMOS Sensor
  • ISO 200 - 25600 ( expands to 100 - 25600)
  • Micro Four Thirds Mount
  • Sensor-shift Image Stabilization
  • 3.00" Tilting Screen
  • 2360k dot Electronic viewfinder
  • 8.7fps (15.0fps Electronic) continuous shooting
  • 4K (UHD) - 3840 x 2160 video resolution
  • Built-in Wireless
  • 383g. 122 x 84 x 49 mm
  • Replaced Olympus OM-D E-M10 Mark III Compare

Ricoh GR III Key Specs

  • Announcement Date: 2018-09-25
  • 24MP - APS-C CMOS Sensor
  • No Anti-aliasing (AA) filter
  • ISO 100 - 102400
  • 28 mm f2.80 Prime Lens
  • Sensor-shift Image Stabilization
  • 3.00" Fixed Type Screen
  • fps continuous shooting
  • Full HD - 1920 x 1080 video resolution
  • Built-in Wireless
  • 257g. 109 x 62 x 33 mm
  • Replaced Ricoh GR III Compare

Let's read on the following sections in order to better understand in detail how Olympus E-M10 IV and Ricoh GR III compares and hopefully end up with enough arguments to decide which one is better for you.


Related Blog Posts

More Details about the Upcoming OM System 90mm f3.5 2X Macro Lens 
Daily Deals: DJI Osmo Pocket, Adobe Photoshop Elements 2023 and more
OM System Teaser Hints an Exciting Announcement on February 8th
Readers Vote: Which is the Best Flagship Camera?
Daily Deals: I am just a Messenger Bag
New OM System 90mm f3.5 Macro Lens with 2X Magnification is Coming
Daily Deals: A Travel tripod, an affordable UHS-II card and more
Panasonic did it again!


**This post contains affiliate links and I will be compensated if you make a purchase after clicking through my links. As an Amazon Associate I earn from qualifying purchases.

Reasons to choose Olympus OM-D E-M10 IV over Ricoh GR III
Live Composite Mode
Yes vs No Excellent help for long-exposure photography
LCD Screen
Tilting vs Fixed Type Flexible shooting positions
Built-in Flash
Yes vs No Useful in low-light
Viewfinder
Electronic vs Optical (Optional) Better framing and control
Timelapse Recording
Yes vs No creative shooting
Max Video Resolution
3840 x 2160 vs 1920 x 1080 Higher Resolution Video
Bluetooth
Yes vs No Connect your camera to other devices via Blueetooth
Focus Bracketing
Yes vs No Take multiple photos shifting focus point
CHECK E-M10 IV PRICE


Reasons to choose Ricoh GR III over Olympus OM-D E-M10 IV
Sensor Resolution
24 MP vs 20 MP 19% more pixels
Max ISO
102.400 vs 25.600 300% higher Max ISO
Weight
257 g vs 383 g 126 g lighter
Sensor Pixel Area
15.28µm2 vs 11.22µm2 36% larger pixel area
Built-in ND Filter
2.0-stops vs No Use larger aperture under strong light
CHECK GR III PRICE

Common Strengths of Olympus OM-D E-M10 IV and Ricoh GR III
Wireless Connection
Yes vs Yes Better connectivity
Image Stabilization
Sensor-shift vs Sensor-shift Sharper images at longer focal lengths and long exposures
External Flash Shoe
Yes vs Yes Better for flash photography
Touch Screen
Yes vs Yes Easy control of camera functions
RAW Support
Yes vs Yes Better image quality
Face Detection Focus
Yes vs Yes very handy for portraits
Max Resolution
20 MP vs 24 MP Bigger prints and more details
LCD Screen Resolution
1.040k dots vs 1.037k dots High resolution screens
AE Bracketing
Yes vs Yes Useful for tough lighting conditions and HDR
Smartphone Remote
Yes vs Yes Remote control your camera with a smartphone
UHS Card Support
UHS-II vs UHS-I Read/Write in High Speeds
Common Weaknesses of Olympus OM-D E-M10 IV and Ricoh GR III
Environmental Sealing
No vs No not suitable for tough conditions
Olympus E-M10 IV vs Ricoh GR III: Physical Specs and Body features Comparison

Size and weight is a big decision factor when you are trying to find the ideal camera for your needs. In this section, We are going to illustrate Olympus E-M10 IV and Ricoh GR III side-by-side from the front, back and top in their relative dimensions. Olympus E-M10 IV has external dimensions of 122 x 84 x 49 mm (4.8 x 3.31 x 1.93″) and weighs 383 g (0.84 lb / 13.51 oz) (including batteries). Ricoh GR III has external dimensions of 109 x 62 x 33 mm (4.29 x 2.44 x 1.3″) and weighs 257 g (0.57 lb / 9.07 oz) (including batteries).

Below you can see the front view size comparison of Olympus E-M10 IV and Ricoh GR III. Ricoh GR III is clearly the smaller of the two cameras. Its body is 13mm narrower, 22mm shorter and 16mm thinner than Olympus E-M10 IV. As you can tell, actually this is not a fair size comparison since Ricoh GR III has a built-in lens but Olympus E-M10 IV doesn't. Once you put a lens on E-M10 IV, its thickness will increase significantly.

Olympus E-M10 IV vs Ricoh GR III Camera Size Comparison - Front View
Comparison image of Olympus E-M10 IV and Ricoh GR III Size, Weight and External Dimensions - Front View

Here is the back view size comparison of Olympus E-M10 IV and Ricoh GR III.

Olympus E-M10 IV vs Ricoh GR III Camera Size Comparison - Back View
Comparison image of Olympus E-M10 IV and Ricoh GR III Size and Weight - Back View

Now lets look at the top view comparison of Olympus E-M10 IV and Ricoh GR III.
Olympus E-M10 IV vs Ricoh GR III Camera Size Comparison - Top View
Top View Comparison image of Olympus E-M10 IV and Ricoh GR III Size

Weight is another important factor especially when deciding on a camera that you want to carry with you all day. Ricoh GR III is significantly lighter (126g ) than the Olympus E-M10 IV which may become a big advantage especially on long walking trips.

Again, this comparison may not be very useful in real life as we are comparing the weight of a camera with a built-in lens to the body-only weight of an interchangeable lens camera. Once you put a lens on E-M10 IV, the total kit will weigh much higher.

Weather Sealing

Unfortunately neither Olympus OM-D E-M10 IV nor Ricoh GR III provides any type of weather sealing in their body, so you have to give extra care especially when you are shooting outdoors. If weather sealing is a must-have feature for you, check these sections:
Top Mirrorless Cameras with Weather Sealing
Top Compact Cameras with Weather Sealing

LCD Screen Size and Features

Olympus E-M10 IV and Ricoh GR III's LCD screens has the same diagonal size of 3.00".

On the other hand, Olympus E-M10 IV features a Tilting screen where you can change the angle of the screen to make it easier to shoot from waist or over the head levels whereas the Ricoh GR III has a fixed type screen which provides less flexibility in shooting positions compared to E-M10 IV.
Olympus E-M10 IV vs Ricoh GR III: Sensor Comparison

Olympus E-M10 IV has a 20.0MP Four Thirds (17.4 x 13 mm ) sized CMOS sensor and features TruePic VIII processor. On the other hand, Ricoh GR III has a 24.0MP APS-C (23.5 x 15.6 mm ) sized CMOS sensor .

One other difference between these two cameras that is worth mentioning is that Ricoh GR III's sensor doesn't have an anti-alias (Low-Pass) filter. Removing anti-alias filter increases the sharpness and level of detail but at the same time, it increases the chance of moire occurring in certain scenes.

Below you can see the E-M10 IV and GR III sensor size comparison.

Olympus E-M10 IV vs Ricoh GR III Sensor Size Comparison
Sensor Size and Resolution Comparison image of Olympus E-M10 IV and Ricoh GR III Cameras


As seen above, Ricoh GR III has a 1.6x Larger sensor area than Olympus E-M10 IV. Larger sensors give photographer more control on the depth of field and blurry background compared to smaller sensor when shot in same focal length and aperture.

What types of Photography are Olympus E-M10 IV and Ricoh GR III Good for?
In this section, we rank and compare Olympus E-M10 IV and Ricoh GR III for five different photography types in order to make your decision process easier in case you are specifically interested in one or more of these areas.

Olympus E-M10 IV for Portrait Photography

GOOD

Ricoh GR III for Portrait Photography

GOOD
Large Four Thirds (17.4 x 13 mm) sensor
Very High Resolution Sensor: 20.0MP
Image Stabilization
Electronic Built-in Viewfinder
Good Ergonomics&Handling
Read the details
Large APS-C (23.5 x 15.6 mm) sensor
Very High Resolution Sensor: 24.0MP
Image Stabilization
External Flash Shoe
Optional External Viewfinder
Not so good Ergonomics&Handling
Read the details

Olympus E-M10 IV for Street Photography

EXCELLENT

Ricoh GR III for Street Photography

EXCELLENT
Large Four Thirds (17.4 x 13 mm) sensor
Image Stabilization
Electronic Built-in Viewfinder
Live-view
Face-Detection Focusing
Tilting LCD Screen
Medium sized Body
Read the details
Large APS-C (23.5 x 15.6 mm) sensor
Image Stabilization
Small Body
Live-view
Face-Detection Focusing
Fast Lens at Wide: f2.80
28 mm - Good Wide Angle Coverage
Optional External Viewfinder
Read the details

Olympus E-M10 IV for Sports Photography

GOOD

Ricoh GR III for Sports Photography

AVERAGE
Image Stabilization
Electronic Built-in Viewfinder
Good Ergonomics&Handling
Fast Continuous Shooting: 8.7fps
Fast Max shutter speed: 1/4000s
121 Focus Points
Wireless Connection
Environmental Sealings
Read the details
Image Stabilization
External Flash Shoe
Fast Max shutter speed: 1/4000s
Wireless Connection
Optional External Viewfinder
Not so good Ergonomics&Handling
Environmental Sealings
Focus Points
28 mm Tele Lens
Read the details

Olympus E-M10 IV for Daily Photography

GOOD

Ricoh GR III for Daily Photography

GOOD
Large Four Thirds (17.4 x 13 mm) sensor
Medium size Body
383g
Body Thickness 49mm
Read the details
Large APS-C (23.5 x 15.6 mm) sensor
Compact Body
257g
Read the details

Olympus E-M10 IV for Landscape Photography

AVERAGE

Ricoh GR III for Landscape Photography

AVERAGE
Large Four Thirds (17.4 x 13 mm) sensor
Very High Resolution Sensor: 20.0MP
Live-view
No Environmental Sealings
Read the details
Large APS-C (23.5 x 15.6 mm) sensor
Very High Resolution Sensor: 24.0MP
28 mm - Good Wide Angle Coverage
No Environmental Sealings
Read the details

Olympus E-M10 IV vs Ricoh GR III: OUR DECISION

You may have already made your decision about which camera suits better for your needs and your budget so far but in case you wonder how we rated Olympus E-M10 IV and Ricoh GR III, below you can find their scores in five different aspects. Our Decision Algorithm dynamically scores cameras using 69 different specs, current price and DxO Mark scores (where possible) in order to make a more objective and consistent comparison.

Here is a summary of how Olympus E-M10 IV and Ricoh GR III scores compare:

Olympus E-M10 IV
Imaging
Features
Value
Portability
Overall
Ranked #77 out of 109 in SLR-style mirrorless cameras
Ranked #139 out of 1257 in all Cameras
Ricoh GR III
Imaging
Features
Value
Portability
Overall
Ranked #38 out of 62 in Large sensor compact cameras
Ranked #356 out of 1257 in all Cameras

Olympus E-M10 IV is the overall winner of this comparison. It has a higher Overall Score and beats Ricoh GR III in all criteria except one: Portability. But the size difference between these cameras are negligible in real world so it is not a big disadvantage for Olympus E-M10 IV.

Olympus E-M10 IV
Olympus E-M10 IV
CHECK PRICE

CHECK PRICE

Ricoh GR III
Ricoh GR III
CHECK PRICE

CHECK PRICE

Ricoh GR III vs Olympus E-M10 IV Specs Table
Detailed comparison of specifications
General Olympus OM-D E-M10 IV Ricoh GR III
Brand Olympus Ricoh
Announced 2020-08-04 2018-09-25
Body Type SLR-style mirrorless Large sensor compact
Sensor
Type CMOS CMOS
Size Four Thirds APS-C
Dimensions 17.4 x 13 mm 23.5 x 15.6 mm
Area 226.20mm2 366.60mm2
Megapixels 20 megapixels 24 megapixels
Max Resolution 5184 x 3888 6000 x 4000
Max Native Light sensitivity 25,600 ISO 102,400 ISO
Max Boosted Light Sensitivity 25600 ISO -
Min Native Light sensitivity 200 ISO 100 ISO
Min Boosted Light Sensitivity 100 ISO -
RAW Support
Autofocus
AF Touch
AF Continuous
AF Single
AF Tracking
AF Selective
AF Center
AF Multi Area
AF Live View
AF Face Detection
AF Contrast Detection
AF Phase Detection
Number of Focus Points 121 n/a
Lens
Manual Focus
Lens Mount Micro Four Thirds fixed lens
Lens Focal Range no lens 28 mm ()
Max Aperture no lens F2.8
Macro Focus Range no lens 6cm
Screen
Type Tilting Fixed type
Size 3.00" 3.00"
Resolution 1,040k dots 1,037k dots
Touch Screen
Viewfinder
Viewfinder Electronic Optical (optional)
Viewfinder Resolution 2,360k dots no electronic viewfinder
Viewfinder Coverage 100% n/a
Viewfinder Magnification 0.62x n/a
Photography Features
Max Mechanical Shutter 1/4000s 1/4000s
Max Electronic Shutter 1/16000s n/a
Shutter Priority
Aperture Priority
Manual Exposure Mode
Custom White Balance
Built-in Image Stabilization Sensor-shift Sensor-shift
Built-in Flash
Flash Range 7.20 m (at ISO 200) no built-in flash
Max Flash Sync 1/250s n/a
External Flash
Continuous Shooting 8.7 fps n/a
Multi-Segment Metering
Average Metering
Spot Metering
Partial Metering
AF-Area Metering
Center Weighted Metering
AE Bracketing
WB Bracketing
Video Features
Max Video Resolution 3840 x 2160 1920 x 1080
Video Formats MPEG-4, H.264 MPEG-4, H.264
Microphone Port
Headphone Port
Connectivity
Wireless Connectivity Built-In Built-In
HDMI
Physical
Environmental Sealing
Weight 383g 257g
Dimensions 122 x 84 x 49mm 109 x 62 x 33mm
Battery Life 360 shots n/a
Other Features
Timelapse Recording
GPS None None
DxO Sensor Scores
Report a correction Report a correction


FOLLOW US


Most Popular Cameras
Sony A7 IV
33 MP | Full frame Sensor | Sony E Mount
Sony A7R IV
61 MP | Full frame Sensor | Sony E Mount
Canon R3
24 MP | Full frame Sensor | Canon RF Mount
Canon M50 II
24 MP | APS-C Sensor | Canon EF-M Mount
Nikon Z9
46 MP | Full frame Sensor | Nikon Z Mount
Fujifilm X-T30 II
26 MP | APS-C Sensor | Fujifilm X Mount
Fujifilm GFX 100
102 MP | Medium format Sensor | Fujifilm G Mount
Nikon Z5
24 MP | Full frame Sensor | Nikon Z Mount
Latest Cameras
Panasonic S5 II X
24 MP | Full frame Sensor | Leica L Mount
Panasonic S5 II
24 MP | Full frame Sensor | Leica L Mount
Pentax KF
24 MP | APS-C Sensor | Pentax KAF2 Mount
Fujifilm X-T5
40 MP | APS-C Sensor | Fujifilm X Mount
Canon R6 II
24 MP | Full frame Sensor | Canon RF Mount
Sony A7R V
61 MP | Full frame Sensor | Sony E Mount
OM System OM-5
20 MP | Four Thirds Sensor | Micro Four Thirds Mount
Sony ZV-1F
20 MP | 1″ Sensor | 20 mm
Copyright © 2023 by CameraDecision
Privacy About Contact Us SpeakerDecision

Report a Correction