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Canon EOS 1D X Mark III vs EOS R3 Comparison

Optics
Video
Features
Storage & Battery

Canon EOS 1D X Mark III

canon eos 1d x mark iii
75%

Canon EOS R3

canon eos r3
Winner!
84%
Canon EOS 1D X Mark III
vs
Canon EOS R3
Price
Brand
Canon
Canon
Model
EOS 1D X Mark III
EOS R3
Released
2020
2021
Announcement Date
January 07, 2020
September 14, 2021
Camera Type
DSLR
Mirrorless
Camera Size
Camera Weight

The Canon EOS R3 outperforms the Canon EOS 1D X Mark III with a score of 84 to 75. Both cameras share similarities, including being announced and released within a year of each other and having a similar price range, with the R3 priced slightly lower at $5999 compared to the 1D X Mark III at $6500.

The EOS R3 boasts advantages with its mirrorless design, resulting in a smaller and lighter body, measuring 150 x 143 x 87mm and weighing 1015g. On the other hand, the EOS 1D X Mark III, being a DSLR, is larger and heavier at 158 x 168 x 83mm and 738g.

Despite its size and weight, the 1D X Mark III remains a reliable and powerful camera, known for its durability and performance. However, the EOS R3’s higher score and more compact design make it a more appealing option for those seeking a balance between quality and portability.

Canon EOS 1D X Mark III vs EOS R3 Overview and Optics

The Canon EOS R3 wins in the optics comparison with a score of 84/100, while the Canon EOS 1D X Mark III scores 74/100. Both cameras share some common specifications, including a CMOS sensor, Digic X processor, and full-frame sensor size. However, there are key differences that contribute to the R3’s higher score.

The R3 has a higher megapixel count at 24 compared to the 1D X Mark III’s 20.1, which results in better image resolution and detail. Additionally, the R3 boasts a faster shooting speed of 30 frames per second (fps), as opposed to the 1D X Mark III’s 20 fps, allowing for improved action and sports photography.

The R3 also has a higher DXOMARK score for its sensor at 96, compared to the 1D X Mark III’s 91. This indicates better overall image quality and low-light performance. Furthermore, the R3 features a more advanced lens mount (Canon RF) and built-in image stabilisation, which the 1D X Mark III lacks.

Despite its lower score, the 1D X Mark III still has some advantages. Its Canon EF lens mount allows for compatibility with a wider range of lenses, especially for photographers who already own Canon EF lenses.

The R3’s superior optics make it the better choice for photographers seeking higher resolution, faster shooting speeds, and improved image quality. However, the 1D X Mark III may be more suitable for those who prioritize lens compatibility and are already invested in the Canon EF system.

Optics
Optics
74%
84%
Megapixels
20.1 MP
24 MP
Image Resolution
5472 x 3648 px
6012 x 4016 px
Sensor Type
CMOS
CMOS
Sensor Size
24 x 36 mm
24 x 36 mm
Sensor Format
Full Frame
Full Frame
Frame Rate
20 fps
30 fps
Lens Mount
Canon EF
Canon RF
Image Processor
Digic X
Digic X
Aspect Ratio
3:2
3:2
Minimum ISO (Native)
100
100
Maximum ISO (Native)
102,400
102,400
Minimum ISO (Expanded)
50
100
Maximum ISO (Expanded)
819200
204800
Minimum Shutter Speed
30 s
30 s
Maximum Shutter Speed
1/ 8000 s
1/ 8000 s
Autofocus Points
191
1,053
In-body Stabilization
Viewfinder Type
Optical (pentaprism)
Electronic
Viewfinder Resolution
N/A
5,760,000 dots

Canon EOS 1D X Mark III vs EOS R3 Video Performance

The Canon EOS R3 takes the lead in video capabilities with a score of 96/100, while the Canon EOS 1D X Mark III trails slightly behind with a score of 91/100. Both cameras share some common features, such as a maximum video frame rate of 120fps and built-in time-lapse functionality.

The EOS R3 outshines the 1D X Mark III with its higher video resolution of 6K and larger video dimensions of 6000 x 3164. This advantage allows the R3 to capture more detail and produce higher quality video content than the 1D X Mark III, which has a maximum video resolution of 4K and video dimensions of 4096 x 2160.

Although the 1D X Mark III has a lower video score, it still offers high-quality 4K video resolution and shares the same maximum video frame rate and time-lapse functionality as the R3. This means that, despite its lower score, the 1D X Mark III remains a strong contender in the video department for those who may not require the extra resolution provided by the R3.

In comparing the video capabilities of the Canon EOS R3 and the Canon EOS 1D X Mark III, it is evident that the R3 holds the advantage due to its superior video resolution and dimensions. However, both cameras offer strong video performance, and the 1D X Mark III remains a viable option for users who may not need the additional resolution offered by the R3. Ultimately, the choice between these two cameras will depend on the specific needs and preferences of the user.

Video
Video
91%
96%
Video
Max Video Resolution
4K
6K
Max Video Dimensions
4096 x 2160 px
6000 x 3164 px
Max Video Frame Rate
120 p
120 p
Time-Lapse Built In
Video File Format
MPEG-4, MOV
MPEG-4

Canon EOS 1D X Mark III vs EOS R3 Features and Benefits

The Canon EOS R3 outperforms the Canon EOS 1D X Mark III in features, scoring 87/100 compared to the 1D X Mark III’s 74/100. Both cameras share several common specifications, such as a 3.2-inch touchscreen, GPS, and WIFI capabilities.

The EOS R3 surpasses the 1D X Mark III in screen resolution and versatility, with 4,150,000 dots compared to the 1D X Mark III’s 2,100,000 dots. This higher resolution provides the R3 with a crisper and more detailed image on its screen. Additionally, the EOS R3 has a flip screen, allowing for more flexible shooting angles and better self-portrait capabilities. The R3 also offers Bluetooth connectivity, which the 1D X Mark III lacks, making it easier to connect and transfer files to external devices.

On the other hand, the 1D X Mark III has no significant advantages over the R3 in terms of features. Both cameras have similar screen sizes, GPS, and WIFI capabilities, but the R3 outshines the 1D X Mark III in other aspects, as mentioned previously.

In comparing the two cameras, the Canon EOS R3 stands out as the superior option in features, offering a higher screen resolution, flip screen, and Bluetooth connectivity. The Canon EOS 1D X Mark III, while still a solid camera, falls short in these areas and does not have any notable advantages over the R3. Therefore, the EOS R3 is the better choice for photographers seeking a camera with more advanced features.

Features
Features
74%
87%
Built-in Flash
External Flash
GPS
Weather Sealing
Screen Type
TFT LCD
LCD
Touch Screen
Screen Size
3.2"
3.2"
Screen Resolution
2,100,000 dots
4,150,000 dots
Flip Screen
Live View
Wi-Fi
Bluetooth

Canon EOS 1D X Mark III vs EOS R3 Storage and Battery

The Canon EOS 1D X Mark III outperforms the Canon EOS R3 in storage and battery with a score of 87/100 compared to the R3’s 81/100. Both cameras share similarities such as having two memory card slots and using the LP-E19 battery type.

The 1D X Mark III excels with its longer battery life, providing 2850 shots per charge, while the EOS R3 only offers 760 shots. This significant difference makes the 1D X Mark III more suitable for extended shooting sessions without the need for frequent battery replacements. However, the 1D X Mark III lacks USB charging, unlike the EOS R3, which supports this convenient feature.

The EOS R3 displays versatility in its storage options, accepting both SD/SDHC/SDXC and CFexpress Type B memory cards, whereas the 1D X Mark III only supports CFexpress Type B cards. This flexibility allows R3 users to choose from a wider range of storage solutions.

Both cameras present unique advantages in storage and battery performance. The Canon EOS 1D X Mark III boasts superior battery life, while the EOS R3 offers greater storage flexibility and USB charging capabilities.

Storage and Battery
Storage and Battery
87%
81%
Memory Card
CFexpress Type B
SD / SDHC / SDXC, CFexpress Type B (UHS-II compatible)
Dual Memory Card Slots
Battery Type
LP-E19
LP-E19
Battery Life
2,850 shots
760 shots
USB Charging
DXOMARK Scores
Sensor scores tested by DXOMARK
Overall Score
91%
96%
Portrait (Color Depth)
24.1 bits
25 bits
Landscape (Dynamic Range)
13.5 EVs
14.7 EVs
Sports (Low-Light ISO)
3207
4086
Scores

Canon EOS 1D X Mark III vs EOS R3 Alternatives

User Scores
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