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Canon 1D X vs T3i

The Canon EOS-1D X and the Canon EOS Rebel T3i (labelled Canon 650D in some countries) are two digital cameras that were announced, respectively, in October 2011 and February 2011. Both are DSLR (Digital Single Lens Reflex) cameras that are based on a full frame (1DX) and an APS-C (T3i) sensor. Both cameras offer a resolution of 17.9 megapixels. Read on to find out how these two cameras compare with respect to their body size, their sensors, their features, their input-output connections, and their reception by expert reviewers.

Headline Specifications
Canon 1D X   Canon T3i
Canon 1D X Canon T3i
Digital single lens reflex Digital single lens reflex
Canon EF mount lenses Canon EF mount lenses
17.9 MP, Full Frame Sensor 17.9 MP, APS-C Sensor
1080/30p Video 1080/30p Video
ISO 100-51200 (50-204800) ISO 100-6400 (100-12800)
Optical viewfinder Optical viewfinder
3.2" LCD, 1040k dots 3.0" LCD, 1040k dots
Fixed screen (not touch-sensitive) Swivel screen (not touch-sensitive)
14 shutter flaps per second 3.7 shutter flaps per second
Weathersealed bodyNot weather sealed
1120 shots per battery charge440 shots per battery charge
158 x 168 x 83 mm, 1551 g 133 x 100 x 80 mm, 570 g

Body comparison: Canon 1D X vs T3i

The side-by-side display below illustrates the physical size and weight of the Canon 1D X and the Canon T3i. The two cameras are presented according to their relative size. Three successive views from the front, the top, and the rear are shown. All width, height and depth dimensions are rounded to the nearest millimeter.

Compare Canon 1D X and Canon T3i
Compare 1DX versus T3i top
Compare 1DX or T3i rear

If the front view area (width x height) of the cameras is taken as an aggregate measure of their size, the Canon T3i is considerably smaller (50 percent) than the Canon 1D X. Moreover, the T3i is substantially lighter (63 percent) than the 1DX. It is worth mentioning in this context that the 1DX is splash and dust resistant, while the T3i does not feature any corresponding weather-sealing.

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. A larger imaging sensor (as in the 1DX) will tend to go along with bigger and heavier lenses, while more compact options are available for the smaller-sensor camera (T3i). You can compare the optics available in the Canon EF Lens Catalog.

Concerning battery life, the 1DX gets 1120 shots out of its LP-E4N battery, while the T3i can take 440 images on a single charge of its LP-E8 power pack. As can be seen in the images above, the 1DX has a battery grip built in. This facilitates image-taking in portrait orientation and gives it additional battery power. In order to provide similar functionality for the T3i, Canon provides the BG-E8 vertical grip as an optional accessory (see here on eBay).

The adjacent table lists the principal physical characteristics of the two cameras alongside a wider set of alternatives. In case you want to display and compare another camera duo, just click on the right or left arrow next to the camera that you would like to inspect. Alternatively, you can also use the CAM-parator to select your camera combination among a larger number of options.

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» 158 mm 168 mm 83 mm 1551 g 1120 Y Oct 2011 6,799- i Canon 1D X
Canon T3i« 133 mm 100 mm 80 mm 570 g 440 n Feb 2011 599- i Canon T3i
Canon SL2« » 122 mm 93 mm 70 mm 453 g 650 n Jun 2017 549 i i Canon SL2
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 SL1« » 117 mm 91 mm 69 mm 407 g 380 n Mar 2013 549- i Canon SL1
Canon T5i« » 133 mm 100 mm 79 mm 580 g 440 n Mar 2013 649- i Canon T5i
Canon 1D C« » 158 mm 164 mm 83 mm 1545 g 1120 Y Apr 2012 14,999- i Canon 1D C
Canon 5D Mark III« » 152 mm 116 mm 76 mm 950 g 950 Y Mar 2012 3,499- i Canon 5D Mark III
Canon 6D« » 145 mm 111 mm 71 mm 770 g 1090 Y Sep 2012 2,099- i Canon 6D
Canon T4i« » 133 mm 100 mm 79 mm 575 g 440 n Jun 2012 849- i Canon T4i
Canon T2i« » 129 mm 98 mm 62 mm 530 g 440 n Feb 2010 699- i Canon T2i
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 1Ds Mark II« » 156 mm 158 mm 80 mm 1215 g 1200 Y Sep 2004 7,999- i Canon 1Ds Mark II
Nikon D5« » 160 mm 159 mm 92 mm 1415 g 3780 Y Jan 2016 6,499 i i Nikon D5
Nikon D4S« » 160 mm 157 mm 91 mm 1350 g 3020 Y Feb 2014 6,499- i Nikon D4S
Nikon D4« » 160 mm 157 mm 91 mm 1340 g 2600 Y Jan 2012 5,999- i Nikon D4

The price is, of course, an important factor in any camera decision. The listed launch prices provide an indication of the market segment that the manufacturer of the cameras have been targeting. The T3i was launched at a markedly lower price (by 91 percent) than the 1DX, which puts it into a different market segment. Usually, retail prices stay at first close to the launch price, but after several months, discounts become available. 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 T3i

The size of the imaging sensor is a crucial determinant 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. Further, a large sensor camera will give the photographer additional creative options when using shallow depth-of-field to isolate a subject from its background. On the downside, larger sensors tend to be more expensive and lead to bigger and heavier cameras and lenses.

Of the two cameras under consideration, the Canon 1D X features a full frame sensor and the Canon T3i an APS-C sensor. The sensor area in the T3i is 62 percent smaller. As a result of these sensor size differences, the cameras have a format factor of, respectively, 1.0 and 1.6. Both cameras have a native aspect ratio (sensor width to sensor height) of 3:2.

In terms of underlying technology, both cameras are build around CMOS sensors.

Canon 1D X and Canon T3i sensor measures

Even though the 1DX has a larger sensor, both cameras offer the same resolution of 17.9 megapixels. This implies that the 1DX has a lower pixel density and larger individual pixels (with a pixel pitch of 6.95μm versus 4.31μm for the T3i), which gives it a potential advantage in terms of light gathering capacity. In addition, the 1DX is a somewhat more recent model (by 8 months) than the T3i, and its sensor might have benefitted from technological advances during this time.

The Canon EOS-1D X has a native sensitivity range from ISO 100 to ISO 51200, which can be extended to ISO 50-204800. The corresponding ISO settings for the Canon EOS Rebel T3i are ISO 100 to ISO 6400, with the possibility to increase the ISO range to 100-12800..

1DX versus T3i MP

For many cameras, data on sensor performance has been reported by DXO Mark. 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"). Of the two cameras under review, the 1DX provides substantially higher image quality than the T3i, with an overall score that is 17 points higher. This advantage is based on 1.7 bits higher color depth, 0.3 EV in additional dynamic range, and 1.8 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
Canon T3i« APS-C 17.9 5184 34561080/30p22.111.579365Canon T3i
Canon SL2« » APS-C 24.0 6000 40001080/60p23.613.4104179Canon SL2
Canon 1D X Mark II« » Full Frame 20.0 5472 36484K/60p24.113.5320788Canon 1D X Mark II
Canon SL1« » APS-C 17.9 5184 34561080/30p21.811.384363Canon SL1
Canon T5i« » APS-C 17.9 5184 34561080/30p21.711.268161Canon T5i
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 T4i« » APS-C 17.9 5184 34561080/30p21.711.272262Canon T4i
Canon T2i« » APS-C 17.9 5184 34561080/30p22.111.578466Canon T2i
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

Many modern cameras are not only capable of taking still images, but also of capturing video footage. Both cameras under consideration are equipped with sensors that have a sufficiently high read-out speed for moving images, and both provide the same movie specifications (1080/30p).

 

Feature comparison: Canon 1D X vs T3i

Apart from body and sensor, cameras can and do differ across a variety of features. The 1DX and the T3i 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 adjacent table lists some of the other core features of the Canon 1D X and Canon T3i along with similar information for a selection of comparators.

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)
Built-in
Flash
(yes/no)
Built-in
Image
Stab
Camera
Model
Canon 1D X»optical Y 3.2 1040 fixed n 8000 14.0 n n Canon 1D X
Canon T3i«optical n 3.0 1040 swivel n 4000 3.7 Y n Canon T3i
Canon SL2« »optical n 3.0 1040 swivel Y 4000 5.0 Y n Canon SL2
Canon 1D X Mark II« »optical Y 3.2 1620 fixed Y 8000 16.0 n n Canon 1D X Mark II
Canon SL1« »optical n 3.0 1040 fixed Y 4000 4.9 Y n Canon SL1
Canon T5i« »optical n 3.0 1040 swivel Y 4000 5.0 Y n Canon T5i
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 T4i« »optical n 3.0 1040 swivel Y 4000 5.0 Y n Canon T4i
Canon T2i« »optical n 3.0 1040 fixed n 4000 3.7 Y n Canon T2i
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

One feature that is present on the 1DX, but is missing on the T3i 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 T3i has an articulated screen that can be turned to be front-facing. This characteristic will be appreciated by vloggers and photographers who are interested in taking selfies. In contrast, the 1DX does not have a selfie-screen.

The 1DX writes its imaging data to Compact Flash cards, while the T3i uses SDXC cards. The 1DX features dual card slots, which can be very useful in case a memory card fails. In contrast, the T3i only has one slot.

 

Connectivity comparison: Canon 1D X vs T3i

For some imaging applications, the extent to which a camera can communicate with its environment can be an important aspect in the camera decision process. The table below provides an overview of the connectivity of the Canon EOS-1D X and Canon EOS Rebel T3i and, in particular, the interfaces the cameras (and selected comparators) provide for accessory control and data transfer.

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
Canon T3i«YmonomonoY-mini2.0---Canon T3i
Canon SL2« »YstereomonoY-mini2.0YYYCanon SL2
Canon 1D X Mark II« »YmonomonoYYmini3.0---Canon 1D X Mark II
Canon SL1« »YmonomonoY-mini2.0---Canon SL1
Canon T5i« »YstereomonoY-mini2.0---Canon T5i
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 T4i« »YstereomonoY-mini2.0---Canon T4i
Canon T2i« »Ystereo-Y-mini2.0---Canon T2i
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

Studio photographers will appreciate that the Canon 1D X (unlike the T3i) features a PC Sync socket, so that professional strobe lights can be controlled by the camera.

Both the 1DX and the T3i have been discontinued, but can regularly be found used on eBay. The T3i was replaced by the Canon T4i, while the 1DX was followed by the Canon 1DX Mark II.


Review summary: Canon 1D X vs T3i

So how do things add up? Is there a clear favorite between the Canon 1D X and the Canon T3i? Below is a summary of the relative strengths of each of the two contestants.


Advantages of the Canon EOS-1D X:

  • Better image quality: Scores substantially higher (17 points) in the DXO overall assessment.
  • Richer colors: Generates images with noticeably better colors (1.7 bits more color depth).
  • Better low-light sensitivity: Requires less light for good images (1.8 stops ISO advantage).
  • 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.
  • Faster shutter: Has higher mechanical shutter speed (8000/sec vs 4000/sec) to freeze action.
  • Faster burst: Shoots at higher frequency (14 vs 3.7 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 440) on a single battery charge.
  • Better sealing: Is weather sealed to enable shooting in dusty or wet environments.
  • Better studio light control: Has a PC Sync socket to connect to professional strobe lights.
  • Greater peace of mind: Features a second card slot as a backup in case of memory card failure.
  • More modern: Is somewhat more recent (announced 8 months after the T3i).


Arguments in favor of the Canon EOS Rebel T3i:

  • More flexible LCD: Has swivel screen for odd-angle shots in portrait or landscape orientation.
  • More selfie-friendly: Has an articulated screen that can be turned to be front-facing.
  • More compact: Is smaller (133x100mm vs 158x168mm) and will fit more readily into a bag.
  • Less heavy: Has a lower weight (by 981g or 63 percent) and is thus easier to take along.
  • Easier fill-in: Has a small integrated flash to brighten shadows of backlit subjects.
  • More affordable: Was introduced into a lower priced category (91 percent cheaper at launch).
  • More heavily discounted: Has been on the market for longer (launched in February 2011).

If the number of relative strengths (bullet points above) is taken as a guide, the 1DX is the clear winner of the match-up (13 : 7 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 13:07 T3i

In any case, while the comparison of the spec-sheets of cameras can offer a general idea of their imaging potential, it says nothing about, for example, the handling, responsiveness, and overall imaging quality of the 1DX and the T3i in practical situations. User reviews, such as those found at amazon, can sometimes inform about these issues, but such feedback is often incomplete, inconsistent, and biased.

Expert reviews: Canon 1D X vs T3i

This is why hands-on reviews by experts are important. The following table reports the overall rankings of the cameras as published by some of the major 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
Canon T3i«rev77/1004.5/55/54.5/5 Feb 2011 599- i Canon T3i
Canon SL2« »HiRec78/1004.5/54.5/54.5/5 Jun 2017 549 i i Canon SL2
Canon 1D X Mark II« »-89/1004.5/55/54.5/5 Feb 2016 5,999 i i Canon 1D X Mark II
Canon SL1« »Rec78/1004/54/54/5 Mar 2013 549- i Canon SL1
Canon T5i« »-76/1004.5/54.5/54.5/5 Mar 2013 649- i Canon T5i
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 T4i« »HiRec77/1004.5/54.5/54.5/5 Jun 2012 849- i Canon T4i
Canon T2i« »HiRec77/1004/55/54.5/5 Feb 2010 699- i Canon T2i
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

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. Thus, a score needs to be put into the context of the launch date and the launch price of the camera, and rating-comparisons among cameras that span long time periods or concern very differently equipped models make little sense. Also, kindly note that some of the listed sites have over time developped their review approaches and their reporting style.

Canon 1D X:
Check Ebay offers
Canon T3i:
Check Ebay offers

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 a corresponding selection in the search boxes below. Alternatively, you can follow any of the listed hyperlinks for comparisons that others found interesting.

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    Specifications: Canon 1D X vs Canon T3i

    Camera Specifications
    Camera Model Canon 1D X Canon T3i
    Camera Type Digital single lens reflex Digital single lens reflex
    Camera Lens Canon EF mount lenses Canon EF mount lenses
    Launch Date October 2011 February 2011
    Launch Price USD 6799 USD 599
    Sensor Specs
    Sensor Technology CMOS CMOS
    Sensor Format Full Frame Sensor APS-C Sensor
    Sensor Size 36.0 x 24.0 mm 22.3 x 24.0 mm
    Sensor Area 864 mm2 332.27 mm2
    Sensor Diagonal 43.3 mm 26.8 mm
    Crop Factor 1.0x 1.6x
    Sensor Resolution 17.9 Megapixels 17.9 Megapixels
    Image Resolution 5184 x 3456 pixels 5184 x 3456 pixels
    Pixel Pitch 6.95 μm 4.31 μm
    Pixel Density 2.07 MP/cm2 5.39 MP/cm2
    Moiré control Anti-Alias filter Anti-Alias filter
    Movie Capability 1080/30p Video 1080/30p Video
    ISO Setting 100-51200 ISO 100-6400 ISO
    ISO Boost 50-204800 ISO 100-12800 ISO
    Image Processor DIGIC 5+ (Dual) DIGIC 4
    DXO Sensor Quality (score) 82 65
    DXO Color Depth (bits) 23.8 22.1
    DXO Dynamic Range (EV) 11.8 11.5
    DXO Low Light (ISO) 2786 793
    Screen Specs
    Viewfinder Type Optical viewfinder Optical viewfinder
    Viewfinder Field of View 100% 95%
    Viewfinder Magnification 0.76x 0.53x
    Top-Level Screen Control Panel no Top Display
    LCD Framing Live View Live View
    Rear LCD Size 3.2 inch 3.0 inch
    LCD Resolution 1040k dots 1040k dots
    LCD Attachment Fixed screen Swivel screen
    Shooting Specs
    Autofocus System Phase-detect AF Phase-detect AF
    Maximum Shutter Speed 1/8000s 1/4000s
    Continuous Shooting 14 shutter flaps/s 3.7 shutter flaps/s
    Fill Flash no On-Board Flash Build-in Flash
    Storage Medium CF cards SDXC cards
    Second Storage Option Dual card slots Single card slot
    Connectivity Specs
    External Flash Hotshoe Hotshoe
    Studio Flash PC Sync socket no PC Sync
    USB Connector USB 2.0 USB 2.0
    HDMI Port mini HDMI mini HDMI
    Microphone Port External MIC port External MIC port
    Wifi Support no Wifi no Wifi
    Body Specs
    Environmental SealingWeathersealed bodyNot weather sealed
    Battery Type LP-E4N power pack LP-E8 power pack
    Battery Life (CIPA)1120 shots per charge440 shots per charge
    Body Dimensions 158 x 168 x 83 mm
    (6.2 x 6.6 x 3.3 in)
    133 x 100 x 80 mm
    (5.2 x 3.9 x 3.1 in)
    Camera Weight 1551 g (54.7 oz) 570 g (20.1 oz)

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