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Canon 1D X versus Sony A7 III

The Canon EOS-1D X and the Sony Alpha A7 III are two digital cameras that were officially introduced, respectively, in October 2011 and February 2018. The 1DX is a DSLR, while the A7 III is a mirrorless interchangeable lens camera. Both cameras are equipped with a full frame sensor. The Canon has a resolution of 17.9 megapixel, whereas the Sony provides 24 MP. Read on to find out how these two cameras compare with respect to their size, their sensors, their features, and their reception by expert reviewers.

Body comparison: Canon 1D X vs Sony A7 III

An illustration of the physical size and weight of the Canon 1D X and the Sony A7 III is provided in the side-by-side display below. The two cameras are presented according to their relative size. Three consecutive views from the front, the top, and the rear side are shown. All width, height and depth measures are rounded to the nearest millimeter. You can also toggle the display to switch to a percentage comparison if you prefer that the measures are being expressed in relative terms (in this case, the camera on the left – the 1DX – represents the basis or 100 percent across all the size and weight measures).

Compare Canon 1D X vs Sony A7 III
Compare 1DX versus A7 III top
Compare 1DX and A7 III rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Sony A7 III is considerably smaller (54 percent) than the Canon 1D X. Moreover, the A7 III is substantially lighter (58 percent) than the 1DX. In this context, it is worth noting that both cameras are splash and dust-proof and can, hence, be used in inclement weather conditions or harsh environments.

The above size and weight comparisons are to some extent incomplete since they do not consider the interchangeable lenses that both of these cameras require. Both cameras have similarly sized sensors, but DSLRs have a larger flange-to-focal plane distance than mirrorless cameras, which imposes contraints on the optical engineering process and generally leads to bigger and heavier lenses. You can find an overview of optics for the two cameras in the Canon EF Lens Catalog (1DX) and the Sony FE Lens Catalog (A7 III). Mirrorless cameras, such as the A7 III, have moreover the advantage that they can use many lenses from other systems via adapters, as they have a relatively short flange to focal plane distance.

Concerning battery life, the 1DX gets 1120 shots out of its LP-E4N battery, while the A7 III can take 610 images on a single charge of its NP-FZ100 power pack. As can be seen in the images above, the 1DX has a battery grip build in. This facilitates image-taking in portrait orientation and gives it additional battery power. In order to provide similar functionality for the A7 III, Sony provides the VG-C3EM vertical grip as an optional accessory (see here on eBay).

The following table provides a synthesis of the main physical specifications of the two cameras and other similar ones. If you would like to visualize and compare a different camera combination, just use the right or left arrows in the table to switch to the respective camera. Alternatively, you can also navigate to the CAM-parator app and make your selection from the full list of cameras there.

Camera Body Specifications
  Camera
Model
Camera
Width
Camera
Height
Camera
Depth
Camera
Weight
Battery
Life
(CIPA)
Weather
Sealing
(yes/no)
Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Camera
Model
Canon 1D X» 6.2 in 6.6 in 3.3 in 54.7 oz 1120 Y Oct 2011 6,799- i Canon 1D X
Sony A7 III« 5.0 in 3.8 in 2.9 in 22.9 oz 610 Y Feb 2018 1,999 i i Sony A7 III
Canon 1D X Mark II« » 6.2 in 6.6 in 3.3 in 54.0 oz 1210 Y Feb 2016 5,999 i i Canon 1D X Mark II
Canon 1D C« » 6.2 in 6.5 in 3.3 in 54.5 oz 1120 Y Apr 2012 14,999- i Canon 1D C
Canon 5D Mark III« » 6.0 in 4.6 in 3.0 in 33.5 oz 950 Y Mar 2012 3,499- i Canon 5D Mark III
Canon 6D« » 5.7 in 4.4 in 2.8 in 27.2 oz 1090 Y Sep 2012 2,099- i Canon 6D
Canon 5D Mark II« » 6.0 in 4.5 in 3.0 in 30.0 oz 850 Y Sep 2008 3,499- i Canon 5D Mark II
Canon 1Ds Mark III« » 5.9 in 6.3 in 3.1 in 48.9 oz 1800 Y Aug 2007 7,999- i Canon 1Ds Mark III
Canon 1Ds Mark II« » 6.1 in 6.2 in 3.1 in 42.9 oz 1200 Y Sep 2004 7,999- i Canon 1Ds Mark II
Nikon D5« » 6.3 in 6.3 in 3.6 in 49.9 oz 3780 Y Jan 2016 6,499 i i Nikon D5
Nikon D4S« » 6.3 in 6.2 in 3.6 in 47.6 oz 3020 Y Feb 2014 6,499- i Nikon D4S
Nikon D4« » 6.3 in 6.2 in 3.6 in 47.3 oz 2600 Y Jan 2012 5,999- i Nikon D4
Sony A9« » 5.0 in 3.8 in 2.5 in 23.7 oz 650 Y Apr 2017 4,499 i i Sony A9
Sony A7R II« » 5.0 in 3.8 in 2.4 in 22.0 oz 290 Y Jun 2015 3,199- i Sony A7R II
Sony A7S II« » 5.0 in 3.8 in 2.4 in 22.1 oz 370 Y Sep 2015 2,999 i i Sony A7S II
Sony A7 II« » 5.0 in 3.8 in 2.4 in 21.1 oz 350 Y Nov 2014 1,999- i Sony A7 II
Sony A7« » 5.0 in 3.7 in 1.9 in 16.7 oz 340 Y Oct 2013 1,699- i Sony A7

Any camera purchase will naturally be influenced heavily by the price. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The A7 III was launched at a markedly lower price (by 71 percent) than the 1DX, which puts it into a different market segment. Normally, street prices remain initially close to the MSRP, but after a couple of months, the first discounts appear. Later in the product cycle and, in particular, when the replacement model is about to appear, further discounting and stock clearance sales often push the camera price considerably down.

 

Sensor comparison: Canon 1D X vs Sony A7 III

The size of the imaging sensor is a crucial determinant of image quality. A large sensor will generally have larger individual pixels that offer better low-light sensitivity, provide wider dynamic range, and have richer color-depth than smaller pixels in a sensor of the same technological generation. Furthermore, a large sensor camera will give the photographer more possibilities to use shallow depth-of-field in order to isolate a subject from the background. On the downside, larger sensors tend to be associated with larger, more expensive camera bodies and lenses.

Both cameras under consideration feature a full frame sensor, but their sensors differ slightly in size. The sensor area in the A7 III is 2 percent smaller. They nevertheless have the same format factor of 1.0. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Canon 1D X and Sony A7 III sensor measures

Despite having a slightly smaller sensor, the A7 III offers a higher resolution of 24 megapixel, compared with 17.9 MP of the 1DX. This megapixel advantage comes at the cost of a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 5.94μm versus 6.95μm for the 1DX). However, it should be noted that the A7 III is much more recent (by 6 years and 4 months) than the 1DX, and its sensor will have benefitted from technological advances during this time that make it possible to gather light more efficiently. Coming back to sensor resolution, it should be mentioned that the A7 III has no anti-alias filter installed, so that it can capture all the detail its sensor resolves.

The A7 III has on-sensor phase detect pixels, which results in relatively fast and reliable autofocus acquisition during video recording.

1DX versus A7 III MP

Consistent information on actual sensor performance is available from DXO Mark for many cameras. This service determines an overall sensor rating, as well as sub-scores for low-light sensitivity ("DXO Sports"), dynamic range ("DXO Landscape"), and color depth ("DXO Portrait"). Of the two cameras under consideration, the A7 III offers substantially better image quality than the 1DX (overall score 14 points higher). The advantage is based on 1.2 bits higher color depth, 2.9 EV in additional dynamic range, and 0.4 stops in additional low light sensitivity. The adjacent table reports on the physical sensor characteristics and the outcomes of the DXO sensor quality tests for a sample of comparator-cameras.

Sensor Characteristics
  Camera
Model
Sensor
Class
Resolution
(MP)
Horiz.
Pixels
Vert.
Pixels
Video
Format
DXO
Portrait
DXO
Landscape
DXO
Sports
DXO
Overall
Camera
Model
Canon 1D X» Full Frame 17.9 5184 34561080/30p23.811.8278682Canon 1D X
Sony A7 III« Full Frame 24.0 6000 40004K/30p25.014.7373096Sony A7 III
Canon 1D X Mark II« » Full Frame 20.0 5472 36484K/60p24.113.5320788Canon 1D X Mark II
Canon 1D C« » Full Frame 17.9 5184 34564K/24p----Canon 1D C
Canon 5D Mark III« » Full Frame 22.1 5760 38401080/30p24.011.7229381Canon 5D Mark III
Canon 6D« » Full Frame 20.0 5472 36481080/30p23.812.1234082Canon 6D
Canon 5D Mark II« » Full Frame 21.0 5616 37441080/30p23.711.9181579Canon 5D Mark II
Canon 1Ds Mark III« » Full Frame 21.0 5616 3744-24.012.0166380Canon 1Ds Mark III
Canon 1Ds Mark II« » Full Frame 16.6 4992 3328-23.311.3148074Canon 1Ds Mark II
Nikon D5« » Full Frame 20.7 5588 37124K/30p25.112.3234388Nikon D5
Nikon D4S« » Full Frame 16.2 4928 32801080/60p24.413.3307489Nikon D4S
Nikon D4« » Full Frame 16.2 4928 32801080/30p24.713.1296589Nikon D4
Sony A9« » Full Frame 24.0 6000 40004K/30p24.913.3351792Sony A9
Sony A7R II« » Full Frame 42.2 7952 53044K/30p26.013.9343498Sony A7R II
Sony A7S II« » Full Frame 12.0 4240 28324K/30p23.613.3299385Sony A7S II
Sony A7 II« » Full Frame 24.0 6000 40001080/60p24.913.6244990Sony A7 II
Sony A7« » Full Frame 24.0 6000 40001080/60p24.814.2224890Sony A7

Many modern cameras are not only capable of taking still images, but also of capturing video footage. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, but the A7 III provides a better video resolution than the 1DX. It can shoot movie footage at 4K/30p, while the Canon is limited to 1080/30p.

 

Feature comparison: Canon 1D X vs Sony A7 III

Beyond body and sensor, cameras can and do differ across a range of features. For example, the A7 III has an electronic viewfinder (2359k dots), while the 1DX has an optical one. Both systems have their advantages, with the electronic viewfinder making it possible to project supplementary shooting information into the framing view, whereas the optical viewfinder offers lag-free viewing and a very clear framing image. The following table reports on some other key feature differences and similarities of the Canon 1D X, the Sony A7 III, and comparable cameras. If needed, the dpreview camera hub, for example, contains further detail on the cameras' specs.

Core Features
  Camera
Model
Viewfinder
(Type or
'000 dots)
Control
Panel
(yes/no)
LCD
Size
(inch)
LCD
Resolution
('000 dots)
LCD
Attach-
ment
Touch
Screen
(yes/no)
Shutter
speed
(1/sec)
Shutter
flaps
(1/sec)
Build-in
Flash
(yes/no)
Build-in
Image
Stab
Camera
Model
Canon 1D X»optical Y 3.2 1040 fixed n 8000 14.0 n n Canon 1D X
Sony A7 III«2359 n 3.0 922 tilting Y 8000 10.0 n Y Sony A7 III
Canon 1D X Mark II« »optical Y 3.2 1620 fixed Y 8000 16.0 n n Canon 1D X Mark II
Canon 1D C« »optical Y 3.2 1040 fixed n 8000 14.0 n n Canon 1D C
Canon 5D Mark III« »optical Y 3.2 1040 fixed n 8000 6.0 n n Canon 5D Mark III
Canon 6D« »optical Y 3.0 1040 fixed n 4000 4.5 n n Canon 6D
Canon 5D Mark II« »optical Y 3.0 920 fixed n 8000 3.9 n n Canon 5D Mark II
Canon 1Ds Mark III« »optical Y 3.0 230 fixed n 8000 5.0 n n Canon 1Ds Mark III
Canon 1Ds Mark II« »optical Y 2.0 230 fixed n 8000 4.0 n n Canon 1Ds Mark II
Nikon D5« »optical Y 3.2 2359 fixed Y 8000 14.0 n n Nikon D5
Nikon D4S« »optical Y 3.2 921 fixed n 8000 11.0 n n Nikon D4S
Nikon D4« »optical Y 3.2 921 fixed n 8000 11.0 n n Nikon D4
Sony A9« »3686 n 3.0 1440 tilting Y 8000 20.0 n Y Sony A9
Sony A7R II« »2400 n 3.0 1229 tilting n 8000 5.0 n Y Sony A7R II
Sony A7S II« »2400 n 3.0 1229 tilting n 8000 5.0 n Y Sony A7S II
Sony A7 II« »2400 n 3.0 1230 tilting n 8000 5.0 n Y Sony A7 II
Sony A7« »2400 n 3.0 1230 tilting n 8000 5.0 n n Sony A7

One feature that is present on the 1DX, but is missing on the A7 III is a top-level LCD. While being, of course, smaller than the rear screen, the control panel conveys some of the essential shooting information and can be convenient for quick and easy settings verification.

The reported shutter speed and shutter burst refer to the use of the mechanical shutter. In addition, the A7 III features an electronic shutter, which makes completely silent shooting possible. However, this mode is less suitable for photographing moving objects (rolling shutter) or shooting under artificial light sources (flickering).

The 1DX writes its imaging data to Compact Flash cards, while the A7 III uses SDXC or Memory Stick PRO Duo cards. The 1DX features dual card slots, which can be very useful in case a memory card fails. In contrast, the A7 III only has one slot.

Input-Output Connections
  Camera
Model
Hotshoe
Port
Internal
Microphone
Internal
Speaker
Microphone
Port
Headphone
Port
HDMI
Port
USB
Type
WiFi
Support
NFC
Support
Bluetooth
Support
Camera
Model
Canon 1D X»Ymono-Y-mini2.0---Canon 1D X
Sony A7 III«YstereomonoYYmicro3.1YYYSony A7 III
Canon 1D X Mark II« »YmonomonoYYmini3.0---Canon 1D X Mark II
Canon 1D C« »YmonomonoYYmini2.0---Canon 1D C
Canon 5D Mark III« »YmonomonoYYmini2.0---Canon 5D Mark III
Canon 6D« »YmonomonoY-mini2.0Y--Canon 6D
Canon 5D Mark II« »YmonomonoY-mini2.0---Canon 5D Mark II
Canon 1Ds Mark III« »Y-----2.0---Canon 1Ds Mark III
Canon 1Ds Mark II« »Y-----2.0---Canon 1Ds Mark II
Nikon D5« »YstereomonoYYmini3.0---Nikon D5
Nikon D4S« »YmonomonoYYmini2.0---Nikon D4S
Nikon D4« »Ymonomono--micro2.0---Nikon D4
Sony A9« »YstereomonoYYmicro2.0YYYSony A9
Sony A7R II« »YstereomonoYYmicro2.0YY-Sony A7R II
Sony A7S II« »YstereomonoYYmicro2.0YY-Sony A7S II
Sony A7 II« »YstereomonoYYmicro2.0YY-Sony A7 II
Sony A7« »YstereomonoYYmicro2.0YY-Sony A7

The A7 III is a recent model that features in the current product line-up of Sony. In contrast, the 1DX has been discontinued (but it can be found pre-owned on eBay). As a replacement in the same line of cameras, the 1DX was succeeded by the Canon 1DX Mark II.

Review summary: Canon 1D X vs Sony A7 III

So what conclusions can be drawn? Is there a clear favorite between the Canon 1D X and the Sony A7 III? Below is a summary of the relative strengths of each of the two contestants.

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Reasons to prefer the Canon EOS-1D X:

  • Better moiré control: Has an anti-alias filter to avoid artificial patterns to appear in images.
  • Brighter framing: Features an optical viewfinder for clear, lag-free composition.
  • Easier setting verification: Features an LCD display on top to control shooting parameters.
  • Larger screen: Has a bigger rear LCD (3.2" vs 3.0") for image review and settings control.
  • More detailed LCD: Has a higher resolution rear screen (1040k vs 922k dots).
  • Faster burst: Shoots at higher frequency (14 vs 10 flaps/sec) to capture the decisive moment.
  • More portrait friendly: Features an integrated vertical grip for easier portrait shooting.
  • Longer lasting: Can take more shots (1120 versus 610) on a single battery charge.
  • Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
  • More heavily discounted: Has been available for much longer (launched in October 2011).

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Arguments in favor of the Sony Alpha A7 III:

  • More detail: Has more megapixels (24 vs 17.9MP), which boosts linear resolution by 16%.
  • Maximized detail: Lacks an anti-alias filter to exploit the sensor's full resolution potential.
  • Better image quality: Scores substantially higher (14 points) in the DXO overall evaluation.
  • Richer colors: Generates noticeably more natural colors (1.2 bits more color depth).
  • More dynamic range: Captures a broader range of light and dark details (2.9 EV of extra DR).
  • Better low-light sensitivity: Can shoot in dim conditions (0.4 stops ISO advantage).
  • Better video: Provides higher definition movie capture (4K/30p vs 1080/30p).
  • Better video autofocus: Features on-sensor phase-detection for more confident movie autofocus.
  • Better sound control: Has a headphone port that enables audio monitoring while recording.
  • More framing info: Has an electronic viewfinder that displays shooting data.
  • More flexible LCD: Has a tilting screen for odd-angle shots in landscape orientation.
  • Fewer buttons to press: Has a touchscreen to facilitate handling and shooting adjustments.
  • Less disturbing: Has an electronic shutter option for completely silent shooting.
  • More compact: Is smaller (127x96mm vs 158x168mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight (by 901g or 58 percent) and is thus easier to take along.
  • Sharper images: Has stabilization technology build-in to reduce the impact of hand-shake.
  • More legacy lens friendly: Can use many non-native lenses via adapters.
  • Faster data transfer: Supports a more advanced USB protocol (3.1 vs 2.0).
  • Easier file upload: Has wifi build in for automatic backup or image transfer to the web.
  • Easier device pairing: Supports NFC for fast wireless image transfer over short distances.
  • Easier wireless transfer: Supports Bluetooth for image sharing without cables.
  • More affordable: Was introduced into a lower priced category (71 percent cheaper at launch).
  • More modern: Reflects 6 years and 4 months of technical progress since the 1DX launch.

If the number of relative strengths (bullet points above) is taken as a guide, the A7 III is the clear winner of the contest (23 : 10 points). However, the relevance of individual strengths will vary across photographers, so that you might want to apply your own weighing scheme to the summary points when reflecting and deciding on a new camera.

1DX 10:23 A7 III

In any case, while the comparison of technical specifications can provide a useful overview of the capabilities of different cameras, it remains incomplete and does no justice, for example, to the way the 1DX or the A7 III handle or perform in practice. At times, user reviews, such as those published at amazon, address these issues in a useful manner, but such feedback is on many occasions incomplete, inconsistent, and unreliable. This is where reviews by experts come in. The adjacent table relays the overall verdicts of several of the most popular camera review sites (cameralabs, dpreview, ephotozine, imaging-resource, photographyblog). You can find the full text of the reviews by clicking on the site logo in the table header.

Review Scores
  Camera
Model
cameralabs dpreview ephotozine imaging-resource photographyblog Camera
Launch
(announced)
Launch
Price
(USD)
Street
Price
(USD)
Used
Price
(USD)
Camera
Model
Canon 1D X»--4.5/54.5/54.5/5 Oct 2011 6,799- i Canon 1D X
Sony A7 III«HiRec89/1005/55/55/5 Feb 2018 1,999 i i Sony A7 III
Canon 1D X Mark II« »-89/1004.5/55/54.5/5 Feb 2016 5,999 i i Canon 1D X Mark II
Canon 1D C« »----- Apr 2012 14,999- i Canon 1D C
Canon 5D Mark III« »HiRec82/1004.5/55/54.5/5 Mar 2012 3,499- i Canon 5D Mark III
Canon 6D« »HiRec83/1004.5/54.5/54.5/5 Sep 2012 2,099- i Canon 6D
Canon 5D Mark II« »91/10079/1004/55/5- Sep 2008 3,499- i Canon 5D Mark II
Canon 1Ds Mark III« »-HiRec4.5/5-- Aug 2007 7,999- i Canon 1Ds Mark III
Canon 1Ds Mark II« »-HiRec--- Sep 2004 7,999- i Canon 1Ds Mark II
Nikon D5« »-89/1004.5/55/55/5 Jan 2016 6,499 i i Nikon D5
Nikon D4S« »--4.5/55/54.5/5 Feb 2014 6,499- i Nikon D4S
Nikon D4« »--4.5/5-4.5/5 Jan 2012 5,999- i Nikon D4
Sony A9« »HiRec89/1005/55/55/5 Apr 2017 4,499 i i Sony A9
Sony A7R II« »HiRec90/1005/54.5/55/5 Jun 2015 3,199- i Sony A7R II
Sony A7S II« »Rec-4.5/55/55/5 Sep 2015 2,999 i i Sony A7S II
Sony A7 II« »Rec82/1004.5/55/55/5 Nov 2014 1,999- i Sony A7 II
Sony A7« »HiRec80/1005/54.5/55/5 Oct 2013 1,699- i Sony A7

The above review scores should be interpreted with care, though. The ratings are only valid when referring to cameras in the same category and of the same age. A score, therefore, has to be seen in close connection to the price and market introduction time of the camera, and comparisons of ratings among very different cameras or across long time periods have little meaning. Also, please note that some of the review sites have changed their methodology and reporting over time.

 

Other camera comparisons

Did this review help to inform your camera decision process? In case you are interested in seeing how other cameras pair up, just make your choice using the following search menu. An an alternative, you can also directly jump to any one of the listed comparisons that were previously generated by the CAM-parator tool. If you cannot find the camera you are interested in, please send me an email, and I will try to update the database with the necessary infos.

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