Nikon D3100 vs Olympus OM-D E-M10 Mark III

  • APS-C
  • 14 megapixels
  • Nikon F
  • 41
    Overall
  • 13
    Imaging
  • 29
    Features
  • 73
    Size
  • 0
    Price
  • Four Thirds
  • 16 megapixels
  • Micro Four Thirds
  • 46
    Overall
  • 18
    Imaging
  • 62
    Features
  • 77
    Size
  • 0
    Price

Nikon D3100 vs Olympus OM-D E-M10 Mark III: 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, Nikon D3100 belongs to a Entry-Level DSLR category, the other model, Nikon D3100 is a Entry-Level Mirrorless camera. Nikon D3100 is equipped with a 14.0 MP CMOS sensor, while Olympus OM-D E-M10 Mark III comes with a 16.0 MP CMOS sensor.

Both cameras we are going to look at in our overview fall into two different categories - DSLR and MirrorLess. Keeping in mind all the distinctive features of each category, it will be hard to make a detailed comparison of these two models. However, we will do our best to make this review as unbiased and detailed as possible.

To get started, let’s take a look at some of the key features of Nikon D3100 and Olympus OM-D E-M10 Mark III and, after this, we can go on to our detailed comparison of these models.

Nikon D3100 Key Features:

  • 14.0 MP APS-C CMOS sensor
  • ISO 100 - 3200 (Expands to 12800)
  • Image Stabilization: No
  • 3″ Fixed Type Screen
  • ViewFinder: Yes
  • 3.0 fps Continuous Shooting
  • Video: 1920 x 1080 (24 fps), 1280 x 720 (30, 25, 24 fps), 640 x 424 (24 fps)
  • Built-in Wireless: Yes
  • Dimensions: 124 x 96 x 75 mm
  • Weight: 505 g
  • Environmental Sealing: No
  • Built-in GPS: Yes
  • Replaced Nikon D3000. Compare
  • Replaced by Nikon D3200. Compare

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.

Nikon D3100 was substituted by Nikon D3200. Be sure to check out some of our other overviews that may also interest you:
Nikon D3100 vs. D3200
Nikon D3200 vs. Olympus OM-D E-M10 Mark III

Nikon D3100 substituted Nikon D3000. Be sure to check out some of our other overviews that may also interest you:
Nikon D3100 vs. D3000
Nikon D3000 vs. Olympus OM-D E-M10 Mark III

Why is Nikon D3100 a better choice than Olympus OM-D E-M10 Mark III

Sensor Area 355.74 mm2 vs 226.2 mm2 36.4% larger pixel area
Flash Range 12 vs 5.8 6.2 better flash range
Battery Life 550 shots vs 330 shots 220 more frames with a single charge

What are the key reasons to pick Olympus OM-D E-M10 Mark III over Nikon D3100

Timelapse Recording Yes vs No Creative shooting
Sensor Resolution 16.0 MP vs 14.0 MP 12.5% more pixels
Image Stabilization Yes vs No All lenses are stabilized
Continuous Shooting 8.6 fps vs 3 fps 5.6 fps faster
Number Of Focus Points 121 vs 11 110 more focus points
Screen Resolution 1,040k dots vs 230k dots 77.9% higher resolution screen
Touch Screen Yes vs No Easy control of camera functions
Weight 410 g vs 505 g 95 g lighter
Max Video Resolution 3840 x 2160 vs 1920 x 1080 Higher Resolution Video
Viewfinder Magnification 0.62 vs 0.53 0.09 better magnification

Key PROs of Nikon D3100 and Olympus OM-D E-M10 Mark III

Screen Size 3″ | 3″ Large display
Viewfinder Optical (pentamirror) | Electronic Better framing and control
Raw Support Yes | Yes Better image quality
AutoFocus Face Detection Yes | Yes Very handy for portraits
Built-In Flash Yes | Yes External flash available
Flash Sync Port Yes | Yes Port for Flash Sync

Key CONs of Nikon D3100 and Olympus OM-D E-M10 Mark III

Sensor Resolution 14.0 MP | 16.0 MP Small sensor resolution
Microphone Port No | No No microphone port
Headphone Port No | No No headphone port
Environmental Sealing No | No No environmental sealing

Nikon D3100 vs Olympus OM-D E-M10 Mark III: 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 Nikon D3100 and Olympus OM-D E-M10 Mark III from the front view.

Nikon D3100
Olympus OM-D E-M10 Mark III
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Now, let’s go on and see how the reviewed models are different or similar by the top view.

Nikon D3100
Olympus OM-D E-M10 Mark III
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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 95g less than the Nikon D3100. This difference, in fact, can become a significant disadvantage for the photographers, who prefer to have their cameras with them wherever they go.

Comparing Nikon D3100 and Olympus OM-D E-M10 Mark III 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 Nikon D3100 and Olympus OM-D E-M10 Mark III 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. Nikon D3100 features a 14.0 MP APS-C sized CMOS sensor . Olympus OM-D E-M10 Mark III, in its turn, comes with a 16.0 MP Four Thirds sized CMOS sensor and TruePic VIII processor , which makes it significantly different from the first model.

Take a look below to find the comparison of Nikon D3100 and Olympus OM-D E-M10 Mark III by the size of their sensors.

Nikon D3100
Olympus OM-D E-M10 Mark III
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One more distinctive feature of compared models is the sensor size. Nikon D3100 has a sensor area 0.6x bigger compared to Olympus OM-D E-M10 Mark III. What does it mean? This basically means that if you these cameras them with the same aperture and focal length, the first model will give you more control in terms of the blurry background and depth of field.

For Which Fields Of Photography Are Nikon D3100 and Olympus OM-D E-M10 Mark III 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 Nikon D3100 and Olympus OM-D E-M10 Mark III 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 Nikon D3100 Olympus OM-D E-M10 Mark III
Portrait Photography
63%
55%
Street Photography
62%
95%
Sports Photography
66%
90%
Daily Photography
47%
78%
Landscape Photography
78%
73%

Nikon D3100 for Portrait Photography

Advantages:

  • Large APS-C (23.1 x 15.4 mm) sensor
  • Face Detection Focusing

Disadvantages:

  • You might not like Nikon skintone
  • No Image Stabilization

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

Nikon D3100 for Street Photography

Advantages:

  • Built-in View Finder
  • Live View
  • Large APS-C(23.1 x 15.4 mm) sensor

Disadvantages:

  • Big size (124 x 96 x 75 mm)
  • No Image Stabilization
  • Small Number of autofocus Points (11)

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)

Nikon D3100 for Sports Photography

Advantages:

  • Big size (124 x 96 x 75 mm)

Disadvantages:

  • Slow Continuous Shooting (3.0 fps)
  • No Environmental Sealing
  • Slow Max Shutter Speed (1/4000s)
  • Smal Number of autofocus Points (11)
  • Small Number of CrossFocus Points (1)
  • Bad Low Light ISO (919)
  • Small battery life (550 shots)

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)

Nikon D3100 for Daily Photography

Advantages:

  • Large APS-C (23.1 x 15.4 mm) sensor
  • Built-in Flash
  • Built-in View Finder
  • Live View
  • Wireless Connectivity
  • Video is available

Disadvantages:

  • Big weight (505 g)
  • Big size (124 x 96 x 75 mm)

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)

Nikon D3100 for Landscape Photography

Advantages:

  • Large APS-C (23.1 x 15.4 mm) sensor
  • Good Dynamic Range (11.3)
  • Live View
  • RAW Support

Disadvantages:

  • Low resolution sensor (14 MP)
  • No Environmental Sealing
  • Bad Low Light ISO (919)

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

Comparison of Nikon D3100 vs Olympus OM-D E-M10 Mark III: 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, Nikon D3100 or Olympus OM-D E-M10 Mark III, 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 Nikon D3100 and Olympus OM-D E-M10 Mark III here is what we can say in conclusion:

According all the factors that we considered in the process of comparing these two cameras, Olympus OM-D E-M10 Mark III deserves a higher Total Score than the Nikon D3100. Thus, if you are choosing between these options, we would recommend you to choose the first model over the other one.

Nikon D3100 vs Olympus OM-D E-M10 Mark III Table Of Technical Specs

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

Nikon D3100 Olympus OM-D E-M10 Mark III
General
Brand Nikon Olympus
Model D3100 OM-D E-M10 Mark III
Announced Dec 21, 2010 Aug 31, 2017
Body Type Compact SLR SLR-style mirrorless
Sensor
Sensor Type CMOS CMOS
Sensor Size APS-C Four Thirds
Sensor Dimensions 23.1 x 15.4 mm 17.4 x 13 mm
Sensor Area 355.74 mm2 226.20 mm2
Sensor Resolution 14.0 MP 16.0 MP
Max Image Resolution 4608 x 3072 4608 x 3456
Max Native ISO 3,200 25,600
Max Boosted ISO 12,800 n/a
Min Native ISO 100 200
RAW Support Yes Yes
Lens
Manual Focus Yes Yes
Lens Mount Nikon F Micro Four Thirds
Number of Lenses 287 94
Focal Length Multiplier 1.5x 2x
Macro Focus Range
AutoFocus
AF Touch No Yes
AF Continuous Yes Yes
AF Single Yes Yes
AF Tracking Yes Yes
AF Selective Yes Yes
AF Center No Yes
AF Multi Area Yes Yes
AF Live View Yes Yes
AF Face Detection Yes Yes
AF Contrast Detection Yes Yes
AF Phase Detection Yes No
Number of Focus Points 11 121
Number of Cross Focus Points 1 n/a
Screen
Screen Type Fixed Type Tilting
Screen Size 3″ 3″
Screen Resolution 230k dots 1,040k dots
Live View Yes Yes
Touch Screen No Yes
ViewFinder
ViewFinder Optical (pentamirror) Electronic
ViewFinder Resolution 0k dots 2,360k dots
ViewFinder Coverage 95% 100%
ViewFinder Magnification 0.53 0.62
Photography Features
Min Shutter Speed 30 s 60 s
Max Shutter Speed 1/4000 s 1/4000 s
Continuous Shooting 3.0 fps 8.6 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 No Yes
Built-in Flash Yes Yes
Flash Range 12 5.8
Flash Modes Auto, Red-Eye, Slow, Red-Eye Slow, Rear curtain Auto, redeye, slow sync, 2nd-curtain slow sync, redeye slow sync, fill-in, manual
External Flash Yes Yes
AE Bracketing No Yes
WB Bracketing Yes Yes
Exposure Modes
Multi-Segment Yes Yes
Average Yes Yes
Spot No Yes
Partial No No
AF-Area No No
Center Weighted Yes No
Video Features
Video Resolutions 1920 x 1080 (24 fps), 1280 x 720 (30, 25, 24 fps), 640 x 424 (24 fps) 3840 x 2160 @ 30p / 102 Mbps, MOV, H.264, Linear PCM
Max Video Resolution 1920 x 1080 3840 x 2160
Video Formats MPEG-4 MPEG-4, H.264
Microphone Port No No
Headphone Port No No
Connectivity
Wireless Connectivity Yes Yes
HDMI Yes Yes
USB USB 2.0 USB 2.0
Physical
Environmental Sealing No No
Water Proof No No
Dust Proof No No
Shock Proof No No
Crush Proof No No
Freeze Proof No No
Weight 505 g 410 g
Physical Dimensions 124 x 96 x 75 mm 122 x 84 x 50 mm
Battery Life 550 shots 330 shots
Battery Type Battery Pack Battery Pack
Battery Model EN-EL14 BLS-50
Other Features
Self Timer Yes Yes
Timelapse Recording No Yes
GPS Optional
Storage Type SD/SDHC/SDXC SD/SDHC/SDXC (UHS-I/II supported)
Storage Slots 1 1

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