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Canon 5D Mark III versus Canon 1D X

The Canon EOS 5D Mark III and the Canon EOS-1D X are two professional cameras that were revealed to the public, respectively, in March 2012 and October 2011. Both are DSLR (Digital Single Lens Reflex) cameras that are equipped with a full frame sensor. The 5D Mark III has a resolution of 22.1 megapixel, whereas the 1DX provides 17.9 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 5D Mark III vs Canon 1D X

An illustration of the physical size and weight of the Canon 5D Mark III and the Canon 1D X 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. If you prefer, you can also use the toggle button to switch to a comparison in percentage terms (in this case, the camera on the left – the 5D Mark III – represents 100 percent across all the size and weight measures).

Compare Canon 5D Mark III vs Canon 1D X
Compare 5D Mark III versus 1DX top
Compare 5D Mark III and 1DX rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Canon 1D X is considerably larger (51 percent) than the Canon 5D Mark III. Moreover, the 1DX is substantially heavier (63 percent) than the 5D Mark III. 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. In this particular case, both cameras feature the same lens mount, so that they can use the same lenses. You can find an overview of suitable optics in the Canon EF Lens Catalog.

Concerning battery life, the 5D Mark III gets 950 shots out of its LP-E6 battery, while the 1DX can take 1120 images on a single charge of its LP-E4N 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 5D Mark III, Canon provides the BG-E11 vertical grip as an optional accessory (see here on eBay).

The table below summarizes the key physical specs of the two cameras alongside a broader set of comparators. 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 5D Mark III» 152 mm 116 mm 76 mm 950 g 950 Y Mar 2012 3,499- i Canon 5D Mark III
Canon 1D X« 158 mm 168 mm 83 mm 1551 g 1120 Y Oct 2011 6,799- i Canon 1D X
Canon 6D Mark II« » 144 mm 111 mm 75 mm 765 g 1200 Y Jun 2017 1,999 i i Canon 6D Mark II
Canon 1D X Mark II« » 158 mm 168 mm 83 mm 1530 g 1210 Y Feb 2016 5,999 i i Canon 1D X Mark II
Canon 5D Mark IV« » 151 mm 116 mm 76 mm 890 g 900 Y Aug 2016 3,499 i i Canon 5D Mark IV
Canon 5DS« » 152 mm 116 mm 76 mm 930 g 700 Y Feb 2015 3,699 i i Canon 5DS
Canon 5DS R« » 152 mm 116 mm 76 mm 930 g 700 Y Feb 2015 3,699 i i Canon 5DS R
Canon 7D II« » 149 mm 112 mm 78 mm 910 g 670 Y Sep 2014 1,799 i i Canon 7D II
Canon 70D« » 139 mm 104 mm 79 mm 755 g 920 Y Jul 2013 1,199- i Canon 70D
Canon 1D C« » 158 mm 164 mm 83 mm 1545 g 1120 Y Apr 2012 14,999- i Canon 1D C
Canon 6D« » 145 mm 111 mm 71 mm 770 g 1090 Y Sep 2012 2,099- i Canon 6D
Canon 5D Mark II« » 152 mm 114 mm 75 mm 850 g 850 Y Sep 2008 3,499- i Canon 5D Mark II
Canon 1Ds Mark III« » 150 mm 160 mm 80 mm 1385 g 1800 Y Aug 2007 7,999- i Canon 1Ds Mark III
Canon 5D« » 152 mm 113 mm 75 mm 895 g 400 Y Aug 2005 3,299- i Canon 5D
Nikon D4« » 160 mm 157 mm 91 mm 1340 g 2600 Y Jan 2012 5,999- i Nikon D4

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 5D Mark III was launched at a markedly lower price (by 49 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. Then, after the new model is out, very good deals can frequently be found on the pre-owned market.

 

Sensor comparison: Canon 5D Mark III vs Canon 1D X

The size of the sensor inside a digital camera is one of the key determinants of image quality. A large sensor will tend to have larger individual pixels that provide better low-light sensitivity, wider dynamic range, and richer color-depth than smaller pixel-units in a sensor of the same technological generation. Moreover, a large sensor camera will give the photographer more control over depth-of-field in the image and, thus, the ability to better isolate a subject from the background. On the downside, larger sensors are more costly to manufacture and tend to lead to bigger and heavier cameras and lenses.

Both cameras under consideration feature a full frame sensor and have a format factor (sometimes also referred to as "crop factor") of 1.0. Within the spectrum of camera sensors, this places the review cameras among the large-sensor cameras that aim for top notch image quality. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

Technology-wise, both cameras are equipped with CMOS (Complementary Metal–Oxide–Semiconductor) sensors.

Canon 5D Mark III and Canon 1D X sensor measures

While the two cameras under review share the same sensor size, the 5D Mark III offers a higher resolution of 22.1 megapixel, compared with 17.9 MP of the 1DX. This megapixel advantage translates into a 11 percent gain in linear resolution. On the other hand, these sensor specs imply that the 5D Mark III has a higher pixel density and a smaller size of the individual pixel (with a pixel pitch of 6.25μm versus 6.95μm for the 1DX). In this context, it should be noted, however, that the 5D Mark III is a somewhat more recent model (by 4 months) than the 1DX, and its sensor might have benefitted from technological advances during this time that at least partly compensate for the smaller pixel size.

5D Mark III versus 1DX MP

Since 2007, DXO Mark has published sensor performance measurements that have been derived using a consistent methodology. This service is based on lab testing and assigns an overall score to each camera sensor, as well as ratings for dynamic range ("DXO Landscape"), color depth ("DXO Portrait"), and low-light sensitivity ("DXO Sports"). The Overall DXO ratings for the two cameras under consideration are close, suggesting that they provide similar image quality. The table below summarizes the physical sensor characteristics and sensor quality findings and compares them across a set of similar 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 5D Mark III» Full Frame 22.1 5760 38401080/30p24.011.7229381Canon 5D Mark III
Canon 1D X« Full Frame 17.9 5184 34561080/30p23.811.8278682Canon 1D X
Canon 6D Mark II« » Full Frame 26.0 6240 41601080/60p24.411.9286285Canon 6D Mark II
Canon 1D X Mark II« » Full Frame 20.0 5472 36484K/60p24.113.5320788Canon 1D X Mark II
Canon 5D Mark IV« » Full Frame 30.1 6720 44804K/30p24.813.6299591Canon 5D Mark IV
Canon 5DS« » Full Frame 50.3 8688 57921080/60p24.712.4238187Canon 5DS
Canon 5DS R« » Full Frame 50.3 8688 57921080/60p24.612.4230886Canon 5DS R
Canon 7D II« » APS-C 20.0 5472 36481080/60p22.411.8108270Canon 7D II
Canon 70D« » APS-C 20.0 5472 36481080/30p22.511.692668Canon 70D
Canon 1D C« » Full Frame 17.9 5184 34564K/24p----Canon 1D C
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 5D« » Full Frame 12.7 4368 2912-22.911.1136871Canon 5D
Nikon D4« » Full Frame 16.2 4928 32801080/30p24.713.1296589Nikon D4

Many modern cameras are not only capable of taking still images, but can also record movies. Both cameras under consideration have a sensor with sufficiently fast read-out times for moving pictures, and both provide the same movie specifications (1080/30p).

 

Feature comparison: Canon 5D Mark III vs Canon 1D X

Beyond body and sensor, cameras can and do differ across a range of features. The 5D Mark III and the 1DX are similar in the sense that both have an optical viewfinder. The latter is useful for getting a clear image for framing even in brightly lit environments. The following table reports on some other key feature differences and similarities of the Canon 5D Mark III, the Canon 1D X, and comparable cameras. The full specs-sheets can be found in the camera manual or in the dpreview camera hub.

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 5D Mark III»optical Y 3.2 1040 fixed n 8000 6.0 n n Canon 5D Mark III
Canon 1D X«optical Y 3.2 1040 fixed n 8000 14.0 n n Canon 1D X
Canon 6D Mark II« »optical Y 3.0 1040 swivel Y 4000 6.5 n n Canon 6D Mark II
Canon 1D X Mark II« »optical Y 3.2 1620 fixed Y 8000 16.0 n n Canon 1D X Mark II
Canon 5D Mark IV« »optical Y 3.2 1620 fixed Y 8000 7.0 n n Canon 5D Mark IV
Canon 5DS« »optical Y 3.2 1040 fixed n 8000 5.0 n n Canon 5DS
Canon 5DS R« »optical Y 3.2 1040 fixed n 8000 5.0 n n Canon 5DS R
Canon 7D II« »optical Y 3.0 1040 fixed n 8000 10.0 Y n Canon 7D II
Canon 70D« »optical Y 3.0 1040 swivel Y 8000 7.0 Y n Canon 70D
Canon 1D C« »optical Y 3.2 1040 fixed n 8000 14.0 n n Canon 1D C
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 5D« »optical Y 2.5 230 fixed n 8000 3.0 n n Canon 5D
Nikon D4« »optical Y 3.2 921 fixed n 8000 11.0 n n Nikon D4

Both the 5D Mark III and the 1DX write their imaging data to Compact Flash cards. Both cameras feature dual card slots, which can be very useful in case a memory card fails.

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 5D Mark III»YmonomonoYYmini2.0---Canon 5D Mark III
Canon 1D X«Ymono-Y-mini2.0---Canon 1D X
Canon 6D Mark II« »YstereomonoY-mini2.0YYYCanon 6D Mark II
Canon 1D X Mark II« »YmonomonoYYmini3.0---Canon 1D X Mark II
Canon 5D Mark IV« »YmonomonoYYmini3.0YY-Canon 5D Mark IV
Canon 5DS« »YmonomonoY-mini3.0---Canon 5DS
Canon 5DS R« »YmonomonoY-mini3.0---Canon 5DS R
Canon 7D II« »YstereomonoYYmini3.0---Canon 7D II
Canon 70D« »YstereomonoY-mini2.0Y--Canon 70D
Canon 1D C« »YmonomonoYYmini2.0---Canon 1D C
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 5D« »Y-----2.0---Canon 5D
Nikon D4« »Ymonomono--micro2.0---Nikon D4

Both the 5D Mark III and the 1DX have been discontinued, but can regularly be found used on eBay. The 1DX was replaced by the Canon 1DX Mark II, while the 5D Mark III was followed by the Canon 5D Mark IV.

Review summary: Canon 5D Mark III vs Canon 1D X

So how do things add up? Which of the two cameras – the Canon 5D Mark III or the Canon 1D X – has the upper hand? A synthesis of the relative strong points of each of the models is listed below.


Arguments in favor of the Canon EOS 5D Mark III:

  • More detail: Offers more megapixels (22.1 vs 17.9MP) with a 11% higher linear resolution.
  • Better sound control: Has a headphone port that enables audio monitoring while recording.
  • More compact: Is smaller (152x116mm vs 158x168mm) and thus needs less room in the bag.
  • Less heavy: Is lighter (by 601g or 39 percent) and hence easier to carry around.
  • More affordable: Was introduced into a lower priced category (49 percent cheaper at launch).
  • More modern: Is somewhat more recent (announced 4 months after the 1DX).


Reasons to prefer the Canon EOS-1D X:

  • Faster burst: Shoots at higher frequency (14 vs 6 flaps/sec) to capture the decisive moment.
  • More portrait friendly: Features an integrated vertical grip for easier portrait shooting.
  • Longer lasting: Gets more shots (1120 versus 950) out of a single battery charge.
  • More heavily discounted: Has been on the market for longer (launched in October 2011).

If the count of individual advantages (bullet points above) is taken as a guide, the 5D Mark III emerges as the winner of the contest (6 : 4 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.

5D Mark III 06:04 1DX

In any case, while the specs-based evaluation of cameras is instructive in revealing their potential as photographic tools, it remains partial and cannot reveal, for example, the handling experience and imaging performance when actually working with the 5D Mark III or the 1DX. User reviews that are available, for instance, at amazon can sometimes shed light on these issues, but such feedback is all too often partial, inconsistent, and inaccurate. 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 5D Mark III»HiRec82/1004.5/55/54.5/5 Mar 2012 3,499- i Canon 5D Mark III
Canon 1D X«--4.5/54.5/54.5/5 Oct 2011 6,799- i Canon 1D X
Canon 6D Mark II« »Rec80/1004.5/54/54/5 Jun 2017 1,999 i i Canon 6D Mark II
Canon 1D X Mark II« »-89/1004.5/55/54.5/5 Feb 2016 5,999 i i Canon 1D X Mark II
Canon 5D Mark IV« »HiRec87/1004.5/55/54.5/5 Aug 2016 3,499 i i Canon 5D Mark IV
Canon 5DS« »Rec83/1004.5/55/54.5/5 Feb 2015 3,699 i i Canon 5DS
Canon 5DS R« »Rec83/1005/55/54.5/5 Feb 2015 3,699 i i Canon 5DS R
Canon 7D II« »Rec84/1004/55/54.5/5 Sep 2014 1,799 i i Canon 7D II
Canon 70D« »HiRec83/1004.5/54.5/55/5 Jul 2013 1,199- i Canon 70D
Canon 1D C« »----- Apr 2012 14,999- i Canon 1D C
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 5D« »88/100HiRecrevrev- Aug 2005 3,299- i Canon 5D
Nikon D4« »--4.5/5-4.5/5 Jan 2012 5,999- i Nikon D4

Care should be taken when interpreting the review scores above, though. The assessments were made in relation to similar cameras of the same technological generation. Hence, a score should always be seen in the context of the camera's market launch date and its price, and comparing ratings of very distinct cameras or ones that are far apart in terms of their release date have little meaning. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.

 

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 contact me, and I will try to locate and add the respective data to the application.

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