Olympus E-M5 Mark III vs Fujifilm GFX 100

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Olympus E-M5 III

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

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Fujifilm GFX 100

102 MP | Medium format (44 x 33 mm) BSI-CMOS Sensor

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Olympus E-M5 III vs Fujifilm GFX 100 Comparison Overview

Here we are comparing two Mirrorless cameras from Olympus and Fujifilm. Olympus E-M5 III was introduced to market in October 2019 and Fujifilm GFX 100 was launched in May 2019. There is only 5 months difference between E-M5 Mark III and GFX 100 so we are expecting this to be a fair comparison regarding age and technology level.

Olympus E-M5 III has a 20.0MP Four Thirds sensor whereas Fujifilm GFX 100 has a 102.0MP Medium format sensor. This will be an interesting match up as even though these two cameras doesn't have the exact same body type, they are both ranked amongst Top 10 cameras in their classes. Olympus E-M5 III is ranked #6 out of 48 Advanced Mirrorless cameras with an overall score of 77 whereas Fujifilm GFX 100 is ranked #1 out of 42 Pro Mirrorless cameras with an overall score of 100.

Let's have a brief look at the main features of Olympus E-M5 III and Fujifilm GFX 100 before getting into our more detailed comparison.

Olympus E-M5 III Key Specs

Announcement Date: 2019-10-17

20MP - Four Thirds MOS Sensor

ISO 200 - 25600

Micro Four Thirds Mount

Sensor-shift Image Stabilization

3" Fully Articulated Screen

2360k dot Electronic viewfinder

30.0 fps continuous shooting

4096 x 2160 video resolution

120 fps High-Speed Video

Built-in Wireless

414g. 125 x 85 x 50 mm

Weather Sealed Body

Replaced Olympus OM-D E-M5 II Compare

Fujifilm GFX 100 Key Specs

Announcement Date: 2019-05-23

102MP - Medium format BSI-CMOS Sensor

ISO 100 - 12800 ( expands to 50-102400)

Fujifilm G Mount

Sensor-shift Image Stabilization

3.2x Tilting Screen

5.0 fps continuous shooting

4096 x 2160 video resolution

Built-in Wireless

1320g. 156 x 144 x 75 mm

Weather Sealed Body

Let's read on the following sections in order to better understand in detail how Olympus E-M5 III and Fujifilm GFX 100 compares and hopefully end up with enough arguments to decide which one is better for you.

Reasons to choose Olympus OM-D E-M5 III over Fujifilm GFX 100

Viewfinder	Electronic vs Electronic (Optional)	Better framing and control
Max ISO	25.600 vs 12.800	100% higher Max ISO
Max Mech. Shutter	1/8000s vs 1/4000s	faster mechanical shutter
Max Elect. Shutter	1/32000s vs 1/16000s	faster electronic shutter
Continuous Shooting	30.0fps vs 5.0fps	25 fps faster
Weight	414 g vs 1320 g	906 g lighter
Selfie Friendly LCD	Yes vs No	Rotate LCD for taking Selfies
Pixel Shift High-Res Mode	Yes (50.0MP) vs No	Increased resolution with pixel shift
Focus Bracketing	Yes vs No	Take multiple photos shifting focus point
Focus Stacking	Yes vs No	Stacks photos in-camera to maximize depth of field

Reasons to choose Fujifilm GFX 100 over Olympus OM-D E-M5 III

Max Sensor Resolution	102 MP vs 20 MP	409% more pixels
Number of Focus Points	425 vs 121	304 more focus points
LCD Screen Size	3.2x vs 3"	0.2 inches larger display
LCD Screen Resolution	2.360k dots vs 1.040k dots	126% higher resolution screen
Battery Life	800 shots vs 310 shots	490 more frames with a single charge
Headphone Port	Yes vs No	better video control
Viewfinder Resolution	5760k dot vs 2360k dot	144% higher resolution
Sensor Pixel Area	14.52µm² vs 11.22µm²	29% larger pixel area
Top LCD	Yes vs No	Help viewing and changing settings easily
Flash Sync Port	Yes vs No	Connect off-camera flash
Storage Slot	2 vs 1	Extra storage slot
Webcam Function	Yes vs No	Use your camera as a Webcam

Common Strengths of Olympus OM-D E-M5 III and Fujifilm GFX 100

Wireless Connection	Yes vs Yes	Better connectivity
Bluetooth Connection	Yes vs Yes	Connect to other devices via Bluetooth
Image Stabilization	Sensor-shift vs Sensor-shift	All the lenses are stabilized
Articulating Screen	Yes vs Yes	Flexible shooting positions
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 102 MP	Bigger prints and more details
LCD Screen Size	3" vs 3.2x	Large display
LCD Screen Resolution	1.040k dots vs 2.360k dots	High resolution screens
Microphone Port	Yes vs Yes	High quality audio recording option
Environmental Sealing	Yes vs Yes	shoot at tough conditions
Timelapse Recording	Yes vs Yes	creative shooting
AE Bracketing	Yes vs Yes	Useful for tough lighting conditions and HDR
Smartphone Remote Control	Yes vs Yes	Remote control your camera with a smartphone
Support for UHS Memory Cards	UHS-II vs UHS-II	Read/Write in Ultra High Speeds

Common Weaknesses of Olympus OM-D E-M5 III and Fujifilm GFX 100

Built-in Flash	No vs No	Require external flash

Olympus E-M5 III vs Fujifilm GFX 100: 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-M5 III and Fujifilm GFX 100 side-by-side from the front, back and top in their relative dimensions.

Below you can see the front view size comparison of Olympus E-M5 III and Fujifilm GFX 100. Olympus E-M5 III is clearly the smaller of the two cameras. Its body is 31mm narrower, 59mm shorter and 25mm thinner than Fujifilm GFX 100.

Here is the back view size comparison of Olympus E-M5 III and Fujifilm GFX 100.

Now lets look at the top view comparison of Olympus E-M5 III and Fujifilm GFX 100.

Weight is another important factor especially when deciding on a camera that you want to carry with you all day. Olympus E-M5 III is significantly lighter (906g ) than the Fujifilm GFX 100 which may become a big advantage especially on long walking trips.

Also keep in mind that body weight is not the only deciding factor when comparing two interchangeable camera bodies, you have to also take into account the lenses that you will be using with these bodies. Since Fujifilm GFX 100 has a Medium format sensor and Olympus E-M5 III has a smaller Four Thirds sensor, Olympus E-M5 III's lenses for a similar focal length and aperture will generally be lighter and smaller than the Fujifilm GFX 100 lenses.

Weight Comparison

Mirrorless Cameras

E-M5 Mark III

GFX 100

Min

Average

Max

Thickness Comparison

Mirrorless Cameras

E-M5 Mark III

GFX 100

Min

Average

Max

Weather Sealing

Both E-M5 Mark III and GFX 100 have weather sealings in their body, making them resistant to water and dust.

LCD Screen Size and Features

Fujifilm GFX 100's 3.2x LCD screen is slightly larger than Olympus E-M5 III's 3" screen.

Olympus E-M5 III vs Fujifilm GFX 100: Sensor Comparison

Olympus E-M5 III has a 20.0MP Four Thirds (17.4 x 13 mm ) sized MOS sensor and features TruePic VIII processor. On the other hand, Fujifilm GFX 100 has a 102.0MP Medium format (44 x 33 mm ) sized BSI-CMOS sensor and features X-Processor 4 processor.

Fujifilm GFX 100's sensor provides 82MP more than Olympus E-M5 III's sensor, which gives a significant advantage in real life. You can print your images larger or crop more freely. On the other hand, please keep in mind that Max sensor resolution is not the only determinant of resolving power. Factors such as the optical elements, low pass filter, pixel size and sensor technology also affects the final resolution of the captured image.

Below you can see the E-M5 Mark III and GFX 100 sensor size comparison.

As seen above, Fujifilm GFX 100 has a 6.4x Larger sensor area than Olympus E-M5 III. 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-M5 III and Fujifilm GFX 100 Good for?

In this section, we rank and compare Olympus E-M5 III and Fujifilm GFX 100 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-M5 III for Portrait Photography

GOOD

Fujifilm GFX 100 for Portrait Photography

EXCELLENT

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 Medium format (44 x 33 mm) sensor
Very High Resolution Sensor: 102.0MP
Image Stabilization
Good Ergonomics&Handling
Optional External Viewfinder
Read the details

Olympus E-M5 III for Street Photography

EXCELLENT

Fujifilm GFX 100 for Street Photography

EXCELLENT

Large Four Thirds (17.4 x 13 mm) sensor
Image Stabilization
Electronic Built-in Viewfinder
Live-view
Face-Detection Focusing
Fully Articulated LCD Screen
Medium sized Body
Read the details

Large Medium format (44 x 33 mm) sensor
Image Stabilization
Live-view
Face-Detection Focusing
Tilting LCD Screen
Optional External Viewfinder
Medium sized Body
Read the details

Olympus E-M5 III for Sports Photography

GOOD

Fujifilm GFX 100 for Sports Photography

GOOD

Image Stabilization
Electronic Built-in Viewfinder
Good Ergonomics&Handling
Fast Continuous Shooting: 30.0fps
Environmental Sealings
Fast Max shutter speed: 1/8000s
121 Focus Points
Wireless Connection
Read the details

Image Stabilization
Good Ergonomics&Handling
Environmental Sealings
Fast Max shutter speed: 1/4000s
425 Focus Points
Good Battery Life: 800 shots
Wireless Connection
Optional External Viewfinder
Average Continuous Shooting: 5.0fps
Read the details

Olympus E-M5 III for Daily Photography

GOOD

Fujifilm GFX 100 for Daily Photography

EXCELLENT

Large Four Thirds (17.4 x 13 mm) sensor
Environmental Sealings
Medium size Body
414g
Body Thickness 50mm
Read the details

Large Medium format (44 x 33 mm) sensor
Environmental Sealings
Medium size Body
1320g
Body Thickness 75mm
Read the details

Olympus E-M5 III for Landscape Photography

AVERAGE

Fujifilm GFX 100 for Landscape Photography

EXCELLENT

Large Four Thirds (17.4 x 13 mm) sensor
Very High Resolution Sensor: 20.0MP
Environmental Sealings
Live-view
Read the details

Large Medium format (44 x 33 mm) sensor
Very High Resolution Sensor: 102.0MP
Environmental Sealings
Live-view
Read the details

Fujifilm GFX 100 vs Olympus E-M5 III Comparison of Available Lenses

Which camera has more lenses?

Number of available lenses is a big decision factor while choosing your interchangeable lens camera. When we look at the available lenses for these two cameras, we see that Olympus E-M5 III has an advantage over Fujifilm GFX 100. There are 105 lenses for Olympus E-M5 III's Micro Four Thirds mount, on the other hand there are only 11 lenses for Fujifilm GFX 100's Fujifilm G lens mount.

Another important factor is the availability of image stabilization. Both Olympus E-M5 III and Fujifilm GFX 100 has Sensor based Image stabilization which means that all the lenses will be stabilized in these bodies.

Lens Type	# of Olympus E-M5 III Lenses	# of Fujifilm GFX 100 Lenses
Standard Zoom	15	n/a
Standard Prime	12	2
Wideangle Zoom	5	1
Wideangle Prime	29	3
Telephoto Zoom	17	2
Telephoto Prime	9	3
SuperZoom	8	n/a
Wideangle Fisheye Prime	5	n/a
Macro Prime	4	n/a
Perspective Control Prime	n/a	n/a
Telephoto Mirror Prime	1	n/a
TOTAL	105	11

Olympus E-M5 III vs Fujifilm GFX 100: 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-M5 III and Fujifilm GFX 100, below you can find their scores in five different aspects. Our Decision Algorithm dynamically scores cameras using 63 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-M5 III and Fujifilm GFX 100 scores compare:

Olympus E-M5 III

Imaging

Features

Value

Portability

Overall

Ranked #28 out of 66 in SLR-style mirrorless cameras
Ranked #62 out of 1190 in all Cameras

Fujifilm GFX 100

Imaging

Features

Value

Portability

Overall

Ranked #1 out of 66 in SLR-style mirrorless cameras
Ranked #1 out of 1190 in all Cameras

Fujifilm GFX 100 is the overall winner of this comparison. It has a higher Overall Score and beats Olympus E-M5 III in all criteria except one: Portability.
If small size and light body is a big priority for you, choose Olympus E-M5 III. Otherwise, Fujifilm GFX 100 is the better camera overall.

Olympus E-M5 III

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Fujifilm GFX 100

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Fujifilm GFX 100 vs Olympus E-M5 III Specs Table

Detailed comparison of specifications

General	Olympus OM-D E-M5 III	Fujifilm GFX 100
Brand	Olympus	Fujifilm
Announced	2019-10-17	2019-05-23
Body Type	SLR-style mirrorless	SLR-style mirrorless
Sensor
Type	MOS	BSI-CMOS
Size	Four Thirds	Medium format
Dimensions	17.4 x 13 mm	44 x 33 mm
Area	226.20mm²	1452.00mm²
Megapixels	20 megapixels	102 megapixels
Max Resolution	5184 x 3888	11648 x 8736
Max Native Light sensitivity	25,600 ISO	12,800 ISO
Max Boosted Light Sensitivity	-	102400 ISO
Min Native Light sensitivity	200 ISO	100 ISO
Min Boosted Light Sensitivity	64 ISO	50 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	425
Lens
Manual Focus
Lens Mount	Micro Four Thirds	Fujifilm G
Number of Available Lenses	105	11
Screen
Type	Fully Articulated	Tilting
Size	3"	3.2x
Resolution	1,040k dots	2,360k dots
Touch Screen
Viewfinder
Viewfinder	Electronic	Electronic (optional)
Viewfinder Resolution	2,360k dots	5,760k dots
Viewfinder Coverage	100%	100%
Viewfinder Magnification	0.68	1.09
Photography Features
Max Mechanical Shutter	1/8000s	1/4000s
Max Electronic Shutter	1/32000s	1/16000s
Shutter Priority
Aperture Priority
Manual Exposure Mode
Custom White Balance
Image Stabilization	Sensor-shift	Sensor-shift
Built-in Flash
Max Flash Sync	1/250s	1/125s
External Flash
Continuous Shooting	30.0 fps	5.0 fps
Multi-Segment
Average
Spot
Partial
AF-Area
Center Weighted
AE Bracketing
WB Bracketing
Video Features
Max Video Resolution	4096 x 2160	4096 x 2160
Video Formats	MPEG-4, H.264	MPEG-4, H.264, H.265
Microphone Port
Headphone Port
Connectivity
Wireless Connectivity	Built-In	Built-In
HDMI
Physical
Environmental Sealing
Weight	414g	1320g
Dimensions	125 x 85 x 50mm	156 x 144 x 75mm
Battery Life	310 shots	800 shots
Other Features
Timelapse Recording
GPS	None	None
DxO Sensor Scores
	Report a correction	Report a correction