Olympus OM-D E-M10 Mark III vs Sony Alpha A9

  • Four Thirds
  • 16 megapixels
  • Micro Four Thirds
  • 46
    Overall
  • 18
    Imaging
  • 62
    Features
  • 77
    Size
  • 0
    Price
  • Full frame
  • 24 megapixels
  • Sony E
  • 50
    Overall
  • 24
    Imaging
  • 81
    Features
  • 74
    Size
  • 0
    Price

Olympus OM-D E-M10 Mark III vs Sony Alpha A9: a Complete Review and Comparison

Are you looking for the best camera to suit your needs? Due to a wide range of options, making a wise and weighted decision can be rather challenging. Which specs to keep in mind? What are the key pros and cons of each model? This comparison should give some helpful hints!

In this review, we are going to make a detailed comparison of two cameras that fall into different categories. While the first model we are looking at, Olympus OM-D E-M10 Mark III belongs to a Entry-Level Mirrorless category, the other model, Olympus OM-D E-M10 Mark III is a Pro Mirrorless camera. Both models feature different types of sensors. Thus, Olympus OM-D E-M10 Mark III comes with CMOS sensor that has a resolution of 16.0 MP resolution, while our second compared model Sony Alpha A9 features a 24.0 MP BSI-CMOS sensor.

To get started, let’s take a look at some of the key features of Olympus OM-D E-M10 Mark III and Sony Alpha A9 and, after this, we can go on to our detailed comparison of these models.

Olympus OM-D E-M10 Mark III Key Features:

  • 16.0 MP Four Thirds CMOS sensor
  • ISO 200 - 25600 (Expands to 100)
  • Image Stabilization: Yes
  • 3″ Tilting Screen
  • ViewFinder: Yes
  • 8.6 fps Continuous Shooting
  • Video: 3840 x 2160 @ 30p / 102 Mbps, MOV, H.264, Linear PCM
  • Built-in Wireless: Yes
  • Dimensions: 122 x 84 x 50 mm
  • Weight: 410 g
  • Environmental Sealing: No
  • Built-in GPS: No
  • Replaced Olympus E-M10 II.

Sony Alpha A9 Key Features:

  • 24.0 MP Full frame BSI-CMOS sensor
  • ISO 100 - 51200 (Expands to 50 - 204800)
  • Image Stabilization: Yes
  • 3″ Tilting Screen
  • ViewFinder: Yes
  • 20.0 fps Continuous Shooting
  • Built-in Wireless: Yes
  • Dimensions: 127 x 96 x 63 mm
  • Weight: 673 g
  • Environmental Sealing: Yes
  • Built-in GPS: No

Olympus OM-D E-M10 Mark III substituted Olympus E-M10 II.

Why is Olympus OM-D E-M10 Mark III a better choice than Sony Alpha A9

Timelapse Recording Yes vs No Creative shooting
Built-In Flash Yes vs No All the lenses are stabilized
Flash Range 5.8 vs No 5.8 better flash range
Weight 410 g vs 673 g 263 g lighter

What are the key reasons to pick Sony Alpha A9 over Olympus OM-D E-M10 Mark III

NFC Yes vs No Easy wireless connectivity with compatible devices
Bluetooth Yes vs No Connect your camera to other devices via Bluetooth
Storage Slots 2 vs 1 Extra storage slot
Sensor Resolution 24.0 MP vs 16.0 MP 33.3% more pixels
Sensor Area 847.28 mm2 vs 226.2 mm2 73.3% larger pixel area
Continuous Shooting 20 fps vs 8.6 fps 11.4 fps faster
Max Shutter Speed 1/8000 vs 1/4000 Faster shutter speed
Number Of Focus Points 693 vs 121 572 more focus points
Screen Resolution 1,440k dots vs 1,040k dots 27.8% higher resolution screen
Battery Life 650 shots vs 330 shots 320 more frames with a single charge
Environmental Sealing Yes vs No Shoot at tough conditions
Microphone Port Yes vs No High quality audio recording option
Headphone Port Yes vs No Has headphone port
Viewfinder Resolution 3,686k dots vs 2,360k dots 36% higher resolution
Viewfinder Magnification 0.78 vs 0.62 0.16 better magnification

Key PROs of Olympus OM-D E-M10 Mark III and Sony Alpha A9

Touch Screen Yes | Yes Easy control of camera functions
Screen Size 3″ | 3″ Large display
Screen Resolution 1,040k dots | 1,440k dots High resolution screen
Screen Type Tilting | Tilting Help viewing and changing settings easily
Viewfinder Electronic | Electronic Better framing and control
Raw Support Yes | Yes Better image quality
AutoFocus Face Detection Yes | Yes Very handy for portraits
Bracketing Yes | Yes Useful for tough lighting conditions and HDR
Continuous Shooting 8.6 fps | 20.0 fps Nice continuous shooting
Image Stabilization Yes | Yes Built-in stabilization
Flash Sync Port Yes | Yes Port for Flash Sync

Olympus OM-D E-M10 Mark III vs Sony Alpha A9: Comparing Two Models By Physical Characteristics

Before heading straight to the technical characteristics of each model, let’s start with comparing their physical specs. Let’s start with looking at the physical difference of the two products. Below are images that clearly show the sizes of Olympus OM-D E-M10 Mark III and Sony Alpha A9 from the front view.

Olympus OM-D E-M10 Mark III
Sony Alpha A9
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Now, let’s go on and see how the reviewed models are different or similar by the top view.

Olympus OM-D E-M10 Mark III
Sony Alpha A9
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After looking at these images, you should get a clear idea of each model’s dimensions and how they are different from each other. However, we are not going to stop there. The next characteristic worth looking at is the weight. Of course, not every photographer is concerned about the weight, for example, it wouldn't be a decisive point for those who shoot in a studio. However, it is still an important factor because if you happen to go on a long photo session or just love having the camera with you wherever you go, you want to be sure that the chosen model isn't too heavy.

Speaking of weight, Olympus OM-D E-M10 Mark III is a lighter option of these two, as it weights 263g less than the Sony Alpha A9. This difference, in fact, can become a significant disadvantage for the photographers, who prefer to have their cameras with them wherever they go.

Comparing Olympus OM-D E-M10 Mark III and Sony Alpha A9 by the type of Sensor and Resolution

Sensor is, without a doubt, the most significant element of every digital camera. Its type, size, and resolution are the factors that define the quality of future shots. Thus, it is barely possible to pick a suitable camera without looking at these specs.

Are Olympus OM-D E-M10 Mark III and Sony Alpha A9 any different in terms of sensor type?

In fact, that's exactly what makes these two models really different. Thus, it is a good point to consider if your are choosing between these two cameras. Olympus OM-D E-M10 Mark III features a 16.0 MP Four Thirds sized CMOS sensor and boasts of a TruePic VIII processor . Sony Alpha A9, in its turn, comes with a 24.0 MP Full frame sized BSI-CMOS sensor and BIONZ X processor , which makes it significantly different from the first model.

Take a look below to find the comparison of Olympus OM-D E-M10 Mark III and Sony Alpha A9 by the size of their sensors.

Olympus OM-D E-M10 Mark III
Sony Alpha A9
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One more distinctive feature of compared models is the sensor size. Sony Alpha A9 is equipped with a sensor that is 0.3x larger than the one featured in Olympus OM-D E-M10 Mark III. Compared to the cameras with smaller sensor area, the ones with larger sensors ensure more control on the blurry background and depth of field if you shoot in the same aperture and focal length. Thus, the first model has a significant advantage here.

For Which Fields Of Photography Are Olympus OM-D E-M10 Mark III and Sony Alpha A9 Suitable?

If you are interested in photography or has made a career in this field, you should know that different types of shooting actually require different camera characteristics. While one model can produce outstanding portraits, at the same time, it can be terrible for shooting landscapes, and so on. Thus, before you purchase a specific camera, it is vital to decide, which type of shooting you do most often and consider an option that suits it the most.

This section of our comparison is devoted to the performance of Olympus OM-D E-M10 Mark III and Sony Alpha A9 in different fields of photography. Here we are going to look at the five main areas and evaluate how well each of the reviewed models performs in them. This will help you choose an option that suits your needs the most depending on your interest in one or several of these fields.

Photography Type Olympus OM-D E-M10 Mark III Sony Alpha A9
Portrait Photography
55%
99%
Street Photography
95%
98%
Sports Photography
90%
100%
Daily Photography
78%
70%
Landscape Photography
73%
98%

Olympus OM-D E-M10 Mark III for Portrait Photography

Advantages:

  • Image Stabilization
  • Face Detection Focusing

Disadvantages:

  • Small Four Thirds (17.4 x 13 mm) sensor

Sony Alpha A9 for Portrait Photography

Advantages:

  • Large Full frame (35.6 x 23.8 mm) sensor
  • High resolution sensor (24 MP)
  • Fast Max Shutter Speed (1/8000s)
  • Image Stabilization
  • Face Detection Focusing

Disadvantages:

No Significant Disadvantages

Olympus OM-D E-M10 Mark III for Street Photography

Advantages:

  • Built-in View Finder
  • Live View
  • Image Stabilization
  • Large Four Thirds(17.4 x 13 mm) sensor

Disadvantages:

  • Big size (122 x 84 x 50 mm)

Sony Alpha A9 for Street Photography

Advantages:

  • Built-in View Finder
  • Live View
  • Image Stabilization
  • Large Full frame(35.6 x 23.8 mm) sensor

Disadvantages:

  • Big size (127 x 96 x 63 mm)

Olympus OM-D E-M10 Mark III for Sports Photography

Advantages:

  • Big Number of autofocus Points (121)

Disadvantages:

  • Slow Continuous Shooting (8.6 fps)
  • No Environmental Sealing
  • Slow Max Shutter Speed (1/4000s)
  • Small battery life (330 shots)

Sony Alpha A9 for Sports Photography

Advantages:

  • Fast Continuous Shooting (20.0 fps)
  • Environmental Sealing
  • Fast Max Shutter Speed (1/8000s)
  • Big Number of autofocus Points (693)
  • Nice Low Light ISO (3517)

Disadvantages:

  • Small battery life (650 shots)

Olympus OM-D E-M10 Mark III for Daily Photography

Advantages:

  • Built-in Flash
  • Built-in View Finder
  • Live View
  • Wireless Connectivity
  • Video is available

Disadvantages:

  • Small Four Thirds (17.4 x 13 mm) sensor
  • Big weight (410 g)
  • Big size (122 x 84 x 50 mm)

Sony Alpha A9 for Daily Photography

Advantages:

  • Large Full frame (35.6 x 23.8 mm) sensor
  • Built-in View Finder
  • Live View
  • Wireless Connectivity
  • Video is available

Disadvantages:

  • Big weight (673 g)
  • Big size (127 x 96 x 63 mm)
  • No Built-in Flash

Olympus OM-D E-M10 Mark III for Landscape Photography

Advantages:

  • Live View
  • RAW Support

Disadvantages:

  • Small Four Thirds (17.4 x 13 mm) sensor
  • Low resolution sensor (16 MP)
  • No Environmental Sealing

Sony Alpha A9 for Landscape Photography

Advantages:

  • Large Full frame (35.6 x 23.8 mm) sensor
  • High resolution sensor (24 MP)
  • Good Dynamic Range (13.3)
  • Environmental Sealing
  • Live View
  • RAW Support
  • Nice Low Light ISO (3517)

Disadvantages:

No Significant Disadvantages

Comparison of Olympus OM-D E-M10 Mark III vs Sony Alpha A9: Final Verdict

Hopefully, our detailed overview of these models has helped you consider all the main specs, pros and cons of each cameras. Maybe, after reading this comparison, some of you have already decided which option to opt for depending on your needs and preferences. However, if you are still wondering which option is a better choice, Olympus OM-D E-M10 Mark III or Sony Alpha A9, below you can see what scores each of them received in five different aspects. To wrap up, we have used our unique Decision Algorithm that assesses different camera models upon 63 different factors including their price, and, if possible, DxO Mark scores. This algorithm allows us to make our verdict more consistent and objective.

What is our final verdict? Based on our comparison and the final scores of Olympus OM-D E-M10 Mark III and Sony Alpha A9 here is what we can say in conclusion:

According all the factors that we considered in the process of comparing these two cameras, Sony Alpha A9 deserves a higher Total Score than the Olympus OM-D E-M10 Mark III. Thus, if you are choosing between these options, we would recommend you to choose the first model over the other one.

Olympus OM-D E-M10 Mark III vs Sony Alpha A9 Table Of Technical Specs

For better understanding of each model’s technical characteristics, find the detailed comparison below:

Olympus OM-D E-M10 Mark III Sony Alpha A9
General
Brand Olympus Sony
Model OM-D E-M10 Mark III Alpha A9
Announced Aug 31, 2017 Apr 19, 2017
Body Type SLR-style mirrorless SLR-style mirrorless
Sensor
Sensor Type CMOS BSI-CMOS
Sensor Size Four Thirds Full frame
Sensor Dimensions 17.4 x 13 mm 35.6 x 23.8 mm
Sensor Area 226.20 mm2 847.28 mm2
Sensor Resolution 16.0 MP 24.0 MP
Max Image Resolution 4608 x 3456 6000 x 4000
Max Native ISO 25,600 51,200
Max Boosted ISO n/a 204,800
Min Native ISO 200 100
RAW Support Yes Yes
Lens
Manual Focus Yes Yes
Lens Mount Micro Four Thirds Sony E
Number of Lenses 94 83
Focal Length Multiplier 2x 1x
Macro Focus Range
AutoFocus
AF Touch Yes Yes
AF Continuous Yes Yes
AF Single Yes Yes
AF Tracking Yes Yes
AF Selective Yes Yes
AF Center Yes Yes
AF Multi Area Yes Yes
AF Live View Yes Yes
AF Face Detection Yes Yes
AF Contrast Detection Yes Yes
AF Phase Detection No Yes
Number of Focus Points 121 693
Number of Cross Focus Points n/a n/a
Screen
Screen Type Tilting Tilting
Screen Size 3″ 3″
Screen Resolution 1,040k dots 1,440k dots
Live View Yes Yes
Touch Screen Yes Yes
ViewFinder
ViewFinder Electronic Electronic
ViewFinder Resolution 2,360k dots 3,686k dots
ViewFinder Coverage 100% 100%
ViewFinder Magnification 0.62 0.78
Photography Features
Min Shutter Speed 60 s 30 s
Max Shutter Speed 1/4000 s 1/8000 s
Continuous Shooting 8.6 fps 20.0 fps
Shutter Priority Yes Yes
Aperture Priority Yes Yes
Manual Exposure Mode Yes Yes
Exposure Compensation Yes Yes
Custom White Balance Yes Yes
Image Stabilization Yes Yes
Built-in Flash Yes No
Flash Range 5.8 0
Flash Modes Auto, redeye, slow sync, 2nd-curtain slow sync, redeye slow sync, fill-in, manual Flash off, Autoflash, Fill-flash, Slow Sync., Rear Sync., Red-eye reduction, Wireless, Hi-speed sync
External Flash Yes Yes
AE Bracketing Yes Yes
WB Bracketing Yes Yes
Exposure Modes
Multi-Segment Yes Yes
Average Yes Yes
Spot Yes Yes
Partial No No
AF-Area No No
Center Weighted No No
Video Features
Video Resolutions 3840 x 2160 @ 30p / 102 Mbps, MOV, H.264, Linear PCM n/a
Max Video Resolution 3840 x 2160 3840 x 2160
Video Formats MPEG-4, H.264 MPEG-4, AVCHD, H.264
Microphone Port No Yes
Headphone Port No Yes
Connectivity
Wireless Connectivity Yes Yes
HDMI Yes Yes
USB USB 2.0 USB 2.0
Physical
Environmental Sealing No Yes
Water Proof No No
Dust Proof No No
Shock Proof No No
Crush Proof No No
Freeze Proof No No
Weight 410 g 673 g
Physical Dimensions 122 x 84 x 50 mm 127 x 96 x 63 mm
Battery Life 330 shots 650 shots
Battery Type Battery Pack Battery Pack
Battery Model BLS-50 NP-FZ100
Other Features
Self Timer Yes Yes
Timelapse Recording Yes No
GPS
Storage Type SD/SDHC/SDXC (UHS-I/II supported) Dual SD/SDHC/SDXC slots (UHS-II compatible)
Storage Slots 1 2

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