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Olympus E-M5 Mark III vs Nikon D750

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Olympus E-M5 III

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

Olympus E-M5 III
$1199.00

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Nikon D750

24 MP | Full frame (35.9 x 24 mm) CMOS Sensor

Nikon D750
$1196.95

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Olympus E-M5 III vs Nikon D750 Comparison Overview

Here we are comparing two cameras with different body types: Olympus E-M5 III, which was introduced in October 2019 is a Semi-Pro Mirrorless camera with a 20.0MP Four Thirds sensor whereas Nikon D750, which was introduced in September 2014 is a Semi-Pro DSLR camera with a 24.0MP Full frame sensor. As you can see, D750 is 5 years older than E-M5 Mark III. Let's see if this age difference between two cameras makes a big difference.

Despite some fundamental differences of these two body types, Mirrorless cameras are becoming serious alternatives to DSLR cameras thanks to their size/weight advantages and recent improvements in their focus speeds , which makes this comparison even more interesting. Fortunately, you can't go wrong with any of these cameras as we rank them amongst Top 10 cameras in their classes. Olympus E-M5 III is ranked #7 out of 51 Semi-Pro Mirrorless cameras with an overall score of 77 whereas Nikon D750 is ranked #4 out of 91 Semi-Pro DSLR cameras with an overall score of 85.

Let's have a brief look at the main features of Olympus E-M5 III and Nikon D750 before getting into our more detailed comparison.

Olympus E-M5 III Key Specs

  • Announcement Date: 2019-10-17
  • 20MP - Four Thirds CMOS 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 High-Speed Video
  • Built-in Wireless
  • 414g. 125 x 85 x 50 mm
  • Weather Sealed Body
  • Replaced Olympus OM-D E-M5 II Compare

Nikon D750 Key Specs

  • Announcement Date: 2014-09-12
  • 24MP - Full frame CMOS Sensor
  • ISO 100 - 12800 ( expands to 50-51200)
  • Nikon F Mount
  • 3.2" Tilting Screen
  • Optical (pentaprism) viewfinder
  • 6.5 fps continuous shooting
  • 1920 x 1080 video resolution
  • Built-in Wireless
  • 840g. 141 x 113 x 78 mm
  • Weather Sealed Body
  • Replaced Nikon D700 Compare

Let's read on the following sections in order to better understand in detail how Olympus E-M5 III and Nikon D750 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 Nikon D750
Built-in Image Stabilization Sensor-shift vs None All the lenses are stabilized
Touch Screen Yes vs No Easy control of camera functions
Max ISO 25.600 vs 12.800 100% higher Max ISO
Number of Focus Points 121 vs 51 70 more focus points
Max Mechanical Shutter 1/8000s vs 1/4000s faster mechanical shutter
Continuous Shooting 30.0fps vs 6.5fps 23.5 fps faster
Weight 414 g vs 840 g 426 g lighter
Max Video Resolution 4096 x 2160 vs 1920 x 1080 Higher Resolution Video
Pixel Shift High Resolution Mode Yes (50.0MP) vs No Increased resolution with pixel shift
Bluetooth Yes vs No Connect your camera to other devices via Blueetooth
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 Nikon D750 over Olympus OM-D E-M5 III
Built-in Flash Yes vs No Useful in low-light
Max Sensor Resolution 24 MP vs 20 MP 19% more pixels
LCD Screen Size 3.2" vs 3 0.2 inches larger display
LCD Screen Resolution 1.229k dots vs 1.040k dots 18% higher resolution screen
Battery Life 1230 shots vs 310 shots 920 more frames with a single charge
Headphone Port Yes vs No better video control
Sensor Pixel Area 35.66µm2 vs 11.22µm2 217% larger pixel area
Top LCD Yes vs No Help viewing and changing settings easily
Storage Slot 2 vs 1 Extra storage slot
Autofocus at f/8 aperture 11 points vs none Autofocus with teleconverters
Common Strengths of Olympus OM-D E-M5 III and Nikon D750
Wireless Connection Yes vs Yes Better connectivity
Articulating Screen Yes vs Yes Flexible shooting positions
External Flash Shoe Yes vs Yes Better for flash photography
Viewfinder Yes (Electronic) vs Yes (Optical) Better framing and control
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 Size 3 vs 3.2" Large display
LCD Screen Resolution 1.040k dots vs 1.229k dots Higher resolution screens
Continuous Shooting 30.0fps vs 6.5fps Fast shooting speeds
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-I Read/Write in Ultra High Speeds
Common Weaknesses of Olympus OM-D E-M5 III and Nikon D750
Olympus E-M5 III vs Nikon D750: 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 Nikon D750 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 Nikon D750. Olympus E-M5 III is clearly the smaller of the two cameras. Its body is 16mm narrower, 28mm shorter and 28mm thinner than Nikon D750.

Olympus E-M5 III vs Nikon D750 Camera Size Comparison - Front View


Here is the back view size comparison of Olympus E-M5 III and Nikon D750.

Olympus E-M5 III vs Nikon D750 Camera Size Comparison - Back View

Now lets look at the top view comparison of Olympus E-M5 III and Nikon D750.
Olympus E-M5 III vs Nikon D750 Camera Size Comparison - Top View

Olympus E-M5 III vs Nikon D750 Detailed Size Comparison

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 (426g ) than the Nikon D750 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 Nikon D750 has a Full frame 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 Nikon D750 lenses.

Weight Comparison

DSLR Cameras

E-M5 Mark III
D750
Min
Average
Max
Thickness Comparison

DSLR Cameras

E-M5 Mark III
D750
Min
Average
Max

Weather Sealing

Both E-M5 Mark III and D750 have weather sealings in their body, making them resistant to water and dust.

LCD Screen Size and Features

Nikon D750's 3.2" LCD screen is slightly larger than Olympus E-M5 III's 3 screen.

Olympus E-M5 III vs Nikon D750: Sensor Comparison

Olympus E-M5 III has a 20.0MP Four Thirds (17.4 x 13 mm ) sized CMOS sensor and features TruePic VIII processor. On the other hand, Nikon D750 has a 24.0MP Full frame (35.9 x 24 mm ) sized CMOS sensor and features Expeed 4 processor.

Below you can see the E-M5 Mark III and D750 sensor size comparison.

Olympus E-M5 III vs Nikon D750 Sensor Size Comparison


As seen above, Nikon D750 has a 3.8x 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 Nikon D750 Good for?
In this section, we rank and compare Olympus E-M5 III and Nikon D750 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

Nikon D750 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 Full frame (35.9 x 24 mm) sensor
Very High Resolution Sensor: 24.0MP
Optical Built-in Viewfinder
Good Ergonomics&Handling
No Image Stabilization
Read the details

Olympus E-M5 III for Street Photography

EXCELLENT

Nikon D750 for Street Photography

GOOD
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 Full frame (35.9 x 24 mm) sensor
Optical Built-in Viewfinder
Live-view
Face-Detection Focusing
Tilting LCD Screen
No Image Stabilization
Large Body
Read the details

Olympus E-M5 III for Sports Photography

EXCELLENT

Nikon D750 for Sports Photography

EXCELLENT
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
Optical Built-in Viewfinder
Good Ergonomics&Handling
Fast Continuous Shooting: 6.5fps
Environmental Sealings
Fast Max shutter speed: 1/4000s
15 Cross Type Focus sensors
51 Focus Points
Good Battery Life: 1230 shots
Good Low Light ISO
Wireless Connection
Average Continuous Shooting: 6.5fps
No Image Stabilization
Read the details

Olympus E-M5 III for Daily Photography

GOOD

Nikon D750 for Daily Photography

GOOD
Large Four Thirds (17.4 x 13 mm) sensor
Environmental Sealings
Medium size Body
414g
Body Thickness 50mm
Read the details
Large Full frame (35.9 x 24 mm) sensor
Environmental Sealings
Large Body
840g
Body Thickness 78mm
Read the details

Olympus E-M5 III for Landscape Photography

AVERAGE

Nikon D750 for Landscape Photography

AVERAGE
Large Four Thirds (17.4 x 13 mm) sensor
Very High Resolution Sensor: 20.0MP
Environmental Sealings
Live-view
Read the details
Large Full frame (35.9 x 24 mm) sensor
Very High Resolution Sensor: 24.0MP
Environmental Sealings
Live-view
Read the details


Nikon D750 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 Nikon D750 has an advantage over Olympus E-M5 III There are 304 lenses for Nikon D750's Nikon F mount, on the other hand there are only 101 lenses for Olympus E-M5 III's Micro Four Thirds lens mount.

Another important factor is the availability of image stabilization. Olympus E-M5 III has a big advantage in this regard because it has a sensor based image stabilization which means that all the lenses mounted to this body will be stabilized. On the other hand, Nikon D750 doesn't have this feature so you have to buy a lens with optical stabilization feature. Currently there are 101 lenses for Nikon F mount with Optical Image Stabilization features.

Lens Type # of Olympus E-M5 III Lenses # of Nikon D750 Lenses
Standard Zoom 14 33 (17 Full Frame)
Standard Prime 12 20 (17 Full Frame)
Wideangle Zoom 5 33 (17 Full Frame)
Wideangle Prime 27 47 (45 Full Frame)
Telephoto Zoom 17 53 (43 Full Frame)
Telephoto Prime 8 43 (42 Full Frame)
SuperZoom 8 30 (6 Full Frame)
Wideangle Fisheye Prime 5 8 (3 Full Frame)
Macro Prime 4 25 (22 Full Frame)
Perspective Control Prime n/a 11 (11 Full Frame)
Telephoto Mirror Prime 1 1 (0 Full Frame)
TOTAL 101 304 (223 Full Frame)
Olympus E-M5 III vs Nikon D750: 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 Nikon D750, 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 Nikon D750 scores compare:

Olympus E-M5 III
Imaging
Features
Value
Portability
Overall
Ranked #29 out of 68 in SLR-style mirrorless cameras
Ranked #64 out of 1190 in all Cameras
Nikon D750
Imaging
Features
Value
Portability
Overall
Ranked #6 out of 94 in Mid-size SLR cameras
Ranked #21 out of 1190 in all Cameras

Nikon D750 scores higher than the Olympus E-M5 III in Overall. It has better image quality and better value than Olympus E-M5 III. On the other hand, Olympus E-M5 III is more portable and has more features than Nikon D750.
If image quality is very important for you and you want to get the most bang for your bucks, choose the Nikon D750.
If you are looking for a small camera where you can take everywhere with you, and having more features are also important, Olympus E-M5 III is the right choice for you.

Olympus E-M5 III
Olympus E-M5 III
$1199.00

Nikon D750
Nikon D750
$1196.95

Nikon D750 vs Olympus E-M5 III Specs Table
Detailed comparison of specifications
General Olympus OM-D E-M5 III Nikon D750
Brand Olympus Nikon
Announced 2019-10-17 2014-09-12
Body Type SLR-style mirrorless Mid-size SLR
Sensor
Type CMOS CMOS
Size Four Thirds Full frame
Dimensions 17.4 x 13 mm 35.9 x 24 mm
Area 226.20mm2 861.60mm2
Megapixels 20 megapixels 24 megapixels
Max Resolution 5184 x 3888 6016 x 4016
Max Native Light sensitivity 25,600 ISO 12,800 ISO
Max Boosted Light Sensitivity - 51200 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 51
Lens
Manual Focus
Lens Mount Micro Four Thirds Nikon F
Number of Available Lenses 101 304
Screen
Type Fully Articulated Tilting
Size 3 3.2"
Resolution 1,040k dots 1,229k dots
Touch Screen
Viewfinder
Viewfinder Electronic Optical (pentaprism)
Viewfinder Resolution 2,360k dots no electronic viewfinder
Viewfinder Coverage 100% 100%
Viewfinder Magnification 0.68 0.7
Photography Features
Max Shutter Speed 1/8000s 1/4000s
Shutter Priority
Aperture Priority
Manual Exposure Mode
Custom White Balance
Image Stabilization Sensor-shift No
Built-in Flash
Flash Range no built-in flash 12.00 m (at ISO 100)
Max Flash Sync 1/250s 1/200s
External Flash
Continuous Shooting 30.0 fps 6.5 fps
Multi-Segment
Average
Spot
Partial
AF-Area
Center Weighted
AE Bracketing
WB Bracketing
Video Features
Max Video Resolution 4096 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 414g 840g
Dimensions 125 x 85 x 50mm 141 x 113 x 78mm
Battery Life 310 shots 1230 shots
Other Features
Timelapse Recording
GPS None Optional
DxO Sensor Scores
DxO Overall Score not tested 93
DxO Color Depth not tested 24.8
DxO Dynamic Range not tested 14.5
DxO Low Light ISO not tested 2956
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