Sony Alpha A7R III vs Canon EOS 5D Mark III

  • Full frame
  • 42 megapixels
  • Sony E
  • 64
    Overall
  • 46
    Imaging
  • 88
    Features
  • 73
    Size
  • 0
    Price
  • Full frame
  • 22 megapixels
  • Canon EF
  • 50
    Overall
  • 29
    Imaging
  • 50
    Features
  • 70
    Size
  • 0
    Price

Sony Alpha A7R III vs Canon EOS 5D 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, Sony Alpha A7R III belongs to a Pro Mirrorless category, the other model, Sony Alpha A7R III is a Semi-Pro DSLR camera. Both models feature different types of sensors. Thus, Sony Alpha A7R III comes with BSI-CMOS sensor that has a resolution of 42.0 MP resolution, while our second compared model Canon EOS 5D Mark III features a 22.0 MP CMOS sensor.

Both cameras we are going to look at in our overview fall into two different categories - MirrorLess and DSLR. 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 Sony Alpha A7R III and Canon EOS 5D Mark III and, after this, we can go on to our detailed comparison of these models.

Sony Alpha A7R III Key Features:

  • 42.0 MP Full frame BSI-CMOS sensor
  • ISO 100 - 32000 (Expands to 50 - 102400)
  • Image Stabilization: Yes
  • 3″ Tilting Screen
  • ViewFinder: Yes
  • 10.0 fps Continuous Shooting
  • Video: 3840 x 2160 (30p, 25p, 24p), 1920 x 1080 (60p, 60i, 24p), 1440 x 1080 (30p), 640 x 480 (30p)
  • Built-in Wireless: Yes
  • Dimensions: 127 x 96 x 74 mm
  • Weight: 657 g
  • Environmental Sealing: Yes
  • Built-in GPS: No
  • Replaced Sony A7R II.

Canon EOS 5D Mark III Key Features:

  • 22.0 MP Full frame CMOS sensor
  • ISO 100 - 25600 (Expands to 50 - 102400)
  • Image Stabilization: No
  • 3.2″ Fixed Type Screen
  • ViewFinder: Yes
  • 6.0 fps Continuous Shooting
  • Video: 1920 x 1080 (29.97, 25, 23.976 fps fps), 1280 x 720 (59.94, 50 fps), 640 x 480 (25, 30 fps)
  • Built-in Wireless: Yes
  • Dimensions: 152 x 116 x 76 mm
  • Weight: 950 g
  • Environmental Sealing: Yes
  • Built-in GPS: Yes
  • Replaced Canon 5D MII.
  • Replaced by Canon 5D MIV.

Sony Alpha A7R III substituted Sony A7R II.

Why is Sony Alpha A7R III a better choice than Canon EOS 5D Mark III

NFC Yes vs No Easy wireless connectivity with compatible devices
Bluetooth Yes vs No Connect your camera to other devices via Bluetooth
Timelapse Recording No vs No Creative shooting
Sensor Resolution 42.0 MP vs 22.0 MP 47.6% more pixels
Image Stabilization Yes vs No All lenses are stabilized
Continuous Shooting 10 fps vs 6 fps 4 fps faster
Number Of Focus Points 425 vs 61 364 more focus points
Screen Resolution 1,440k dots vs 1,040k dots 27.8% higher resolution screen
Touch Screen Yes vs No Easy control of camera functions
Weight 657 g vs 950 g 293 g lighter
Max Video Resolution 3840 x 2160 vs 1920 x 1080 Higher Resolution Video
Dxo Color Depth 26 vs 24 Better color depth
Dxo Dynamic Range 14.7 vs 11.7 Better dynamic range
Dxo Low Light Iso 3523 vs 2293 Better High ISO performance
Viewfinder Magnification 0.78 vs 0.71 0.07 better magnification

What are the key reasons to pick Canon EOS 5D Mark III over Sony Alpha A7R III

Sensor Area 864 mm2 vs 861.6 mm2 0.3% larger pixel area
Screen Size 3.2″ vs 3″ 0.2" larger screen
Battery Life 950 shots vs 650 shots 300 more frames with a single charge

Key PROs of Sony Alpha A7R III and Canon EOS 5D Mark III

Screen Size 3″ | 3.2″ Large display
Screen Resolution 1,440k dots | 1,040k dots High resolution screen
Viewfinder Electronic | Optical (pentaprism) Better framing and control
Raw Support Yes | Yes Better image quality
Sensor Resolution 42.0 MP | 22.0 MP Bigger prints and more details
AutoFocus Face Detection Yes | Yes Very handy for portraits
Microphone Port Yes | Yes High quality audio recording option
Headphone Port Yes | Yes Better video control
Storage Slots 2 slots | 2 slots Extra Storage Slots
Bracketing Yes | Yes Useful for tough lighting conditions and HDR
Flash Sync Port Yes | Yes Port for Flash Sync
Environmental Sealing Yes | Yes Shoot at tough conditions
Battery Life 650 shots | 950 shots Big number of frames with a single charge

Key CONs of Sony Alpha A7R III and Canon EOS 5D Mark III

Timelapse Recording Yes | No No timelapse recording
Built-In Flash No | No No built-in flash

Sony Alpha A7R III vs Canon EOS 5D 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 Sony Alpha A7R III and Canon EOS 5D Mark III from the front view.

Sony Alpha A7R III
Canon EOS 5D 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.

Sony Alpha A7R III
Canon EOS 5D 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, Sony Alpha A7R III is a lighter option of these two, as it weights 293g less than the Canon EOS 5D Mark III. This difference, in fact, can become a significant disadvantage for the photographers, who prefer to have their cameras with them wherever they go.

Comparing Sony Alpha A7R III and Canon EOS 5D 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 Sony Alpha A7R III and Canon EOS 5D 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. Sony Alpha A7R III features a 42.0 MP Full frame sized BSI-CMOS sensor and boasts of a Bionz X processor . Canon EOS 5D Mark III, in its turn, comes with a 22.0 MP Full frame sized CMOS sensor , which makes it significantly different from the first model.

Take a look below to find the comparison of Sony Alpha A7R III and Canon EOS 5D Mark III by the size of their sensors.

Sony Alpha A7R III
Canon EOS 5D Mark III
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Sony Alpha A7R III and Canon EOS 5D Mark III are identical by this indicator, as each feature a sensor of the same size. Thus, both cameras will provide the same level of control in terms of the depth of field if you use them with the same focal length and aperture.

For Which Fields Of Photography Are Sony Alpha A7R III and Canon EOS 5D 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 Sony Alpha A7R III and Canon EOS 5D 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 Sony Alpha A7R III Canon EOS 5D Mark III
Portrait Photography
99%
100%
Street Photography
95%
90%
Sports Photography
99%
97%
Daily Photography
68%
67%
Landscape Photography
100%
95%

Sony Alpha A7R III for Portrait Photography

Advantages:

  • Large Full frame (35.9 x 24 mm) sensor
  • High resolution sensor (42 MP)
  • Fast Max Shutter Speed (1/8000s)
  • Image Stabilization
  • Face Detection Focusing

Disadvantages:

No Significant Disadvantages

Canon EOS 5D Mark III for Portrait Photography

Advantages:

  • Large Full frame (36 x 24 mm) sensor
  • High resolution sensor (22 MP)
  • Fast Max Shutter Speed (1/8000s)
  • Canon is famous with its skintones
  • Face Detection Focusing

Disadvantages:

  • No Image Stabilization

Sony Alpha A7R III for Street Photography

Advantages:

  • Built-in View Finder
  • Live View
  • Image Stabilization
  • Large Full frame(35.9 x 24 mm) sensor

Disadvantages:

  • Big size (127 x 96 x 74 mm)

Canon EOS 5D Mark III for Street Photography

Advantages:

  • Built-in View Finder
  • Live View
  • Large Full frame(36 x 24 mm) sensor
  • Big battery life (950 shots)

Disadvantages:

  • Big size (152 x 116 x 76 mm)
  • No Image Stabilization

Sony Alpha A7R III for Sports Photography

Advantages:

  • Environmental Sealing
  • Fast Max Shutter Speed (1/8000s)
  • Big Number of autofocus Points (425)
  • Nice Low Light ISO (3523)
  • Big size (127 x 96 x 74 mm)

Disadvantages:

  • Slow Continuous Shooting (10.0 fps)
  • Small battery life (650 shots)

Canon EOS 5D Mark III for Sports Photography

Advantages:

  • Environmental Sealing
  • Fast Max Shutter Speed (1/8000s)
  • Big Number of autofocus Points (61)
  • Big Number of CrossFocus Points (41)
  • Nice Low Light ISO (2293)
  • Big size (152 x 116 x 76 mm)

Disadvantages:

  • Slow Continuous Shooting (6.0 fps)

Sony Alpha A7R III for Daily Photography

Advantages:

  • Large Full frame (35.9 x 24 mm) sensor
  • Built-in View Finder
  • Live View
  • Wireless Connectivity
  • Video is available

Disadvantages:

  • Big weight (657 g)
  • Big size (127 x 96 x 74 mm)
  • No Built-in Flash

Canon EOS 5D Mark III for Daily Photography

Advantages:

  • Large Full frame (36 x 24 mm) sensor
  • Built-in View Finder
  • Live View
  • Wireless Connectivity
  • Video is available

Disadvantages:

  • Big weight (950 g)
  • Big size (152 x 116 x 76 mm)
  • No Built-in Flash

Sony Alpha A7R III for Landscape Photography

Advantages:

  • Large Full frame (35.9 x 24 mm) sensor
  • High resolution sensor (42 MP)
  • Good Dynamic Range (14.7)
  • Environmental Sealing
  • Live View
  • RAW Support
  • Nice Low Light ISO (3523)

Disadvantages:

No Significant Disadvantages

Canon EOS 5D Mark III for Landscape Photography

Advantages:

  • Large Full frame (36 x 24 mm) sensor
  • Good Dynamic Range (11.7)
  • Environmental Sealing
  • Live View
  • RAW Support
  • Nice Low Light ISO (2293)

Disadvantages:

  • Low resolution sensor (22 MP)

Comparison of Sony Alpha A7R III vs Canon EOS 5D 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, Sony Alpha A7R III or Canon EOS 5D 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 Sony Alpha A7R III and Canon EOS 5D 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, Sony Alpha A7R III deserves a higher Total Score than the Canon EOS 5D Mark III. Thus, if you are choosing between these options, we would recommend you to choose the first model over the other one.

Sony Alpha A7R III vs Canon EOS 5D Mark III Table Of Technical Specs

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

Sony Alpha A7R III Canon EOS 5D Mark III
General
Brand Sony Canon
Model Alpha A7R III EOS 5D Mark III
Announced Oct 25, 2017 May 22, 2012
Body Type SLR-style mirrorless Mid-size SLR
Sensor
Sensor Type BSI-CMOS CMOS
Sensor Size Full frame Full frame
Sensor Dimensions 35.9 x 24 mm 36 x 24 mm
Sensor Area 861.60 mm2 864.00 mm2
Sensor Resolution 42.0 MP 22.0 MP
Max Image Resolution 7952 x 5304 5760 x 3840
Max Native ISO 32,000 25,600
Max Boosted ISO 102,400 102,400
Min Native ISO 100 100
RAW Support Yes Yes
Lens
Manual Focus Yes Yes
Lens Mount Sony E Canon EF
Number of Lenses 83 256
Focal Length Multiplier 1x 1x
Macro Focus Range
AutoFocus
AF Touch Yes No
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 Yes Yes
Number of Focus Points 425 61
Number of Cross Focus Points n/a 41
Screen
Screen Type Tilting Fixed Type
Screen Size 3″ 3.2″
Screen Resolution 1,440k dots 1,040k dots
Live View Yes Yes
Touch Screen Yes No
ViewFinder
ViewFinder Electronic Optical (pentaprism)
ViewFinder Resolution 3,686k dots 0k dots
ViewFinder Coverage 100% 100%
ViewFinder Magnification 0.78 0.71
Photography Features
Min Shutter Speed 30 s 30 s
Max Shutter Speed 1/8000 s 1/8000 s
Continuous Shooting 10.0 fps 6.0 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 No
Built-in Flash No No
Flash Range 0 0
Flash Modes Auto, Fill-flash, Slow Sync, Rear Sync, Red-eye reduction, Wireless, Hi-speed sync no built-in flash
External Flash Yes Yes
AE Bracketing Yes Yes
WB Bracketing Yes Yes
Exposure Modes
Multi-Segment Yes Yes
Average Yes No
Spot Yes Yes
Partial No Yes
AF-Area No No
Center Weighted No Yes
DxO Sensor Scores
DxO Sensor Score 100 81
DxO Color Depth 26.0 24.0
DxO Dynamic Range 14.7 11.7
DxO Low Light ISO 3523 2293
Video Features
Video Resolutions 3840 x 2160 (30p, 25p, 24p), 1920 x 1080 (60p, 60i, 24p), 1440 x 1080 (30p), 640 x 480 (30p) 1920 x 1080 (29.97, 25, 23.976 fps fps), 1280 x 720 (59.94, 50 fps), 640 x 480 (25, 30 fps)
Max Video Resolution 3840 x 2160 1920 x 1080
Video Formats MPEG-4, AVCHD, XAVC S H.264
Microphone Port Yes Yes
Headphone Port Yes Yes
Connectivity
Wireless Connectivity Yes Yes
HDMI Yes Yes
USB USB USB 3.1 Gen 1(5 GBit/sec) USB 2.0
Physical
Environmental Sealing Yes Yes
Water Proof No No
Dust Proof No No
Shock Proof No No
Crush Proof No No
Freeze Proof No No
Weight 657 g 950 g
Physical Dimensions 127 x 96 x 74 mm 152 x 116 x 76 mm
Battery Life 650 shots 950 shots
Battery Type Battery Pack Battery Pack
Battery Model NP-FZ100 LP-E6
Other Features
Self Timer Yes Yes
Timelapse Recording Yes No
GPS Optional
Storage Type Two SD/SDHC/SDXC slots (UHS-II support on one) Compact Flash Type I (UDMA compatible), SD/SDHC/SDXC
Storage Slots 2 2

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