Canon EOS Rebel T3i vs Canon EOS 1D X

This is a full comparison between the cameras Canon EOS Rebel T3i and Canon EOS 1D X. We compare them by looking at the categories you see below.

Manufacturing

These cameras are both manufactured by Canon.

These two camera models were both released 2011.

Camera Released
Canon EOS Rebel T3i 2011
Canon EOS 1D X 2011

Type of camera

Both these cameras are DSLR cameras. No difference there.

Sensors / crop factor

These cameras have different sensors. Canon EOS Rebel T3i has a "Canon APS-C"-sensor while Canon EOS 1D X has a "Canon Full Frame"-sensor, and their difference in sensors will also affect the crop factor and experience focal length. See the table below.

Camera Focal length, 50mm f/1.8 **
Canon EOS Rebel T3i 80 mm
Canon APS-C sensor
Crop factor/focal length multiplier by * 1.6
Canon EOS 1D X 50 mm
Full-frame sensor
No crop factor/focal length multiplier

** Experienced focal length when using a lens such as a common "50mm f/1.8"

Learn more about crop factor and focal length multiplier here:
Camera selection can affect the focal length (Canon)

Resolution

Both these cameras have the exact same resolution. Canon EOS Rebel T3i has a 18 MP (Megapixels) resolution while Canon EOS 1D X has 18,1 MP. If we break down this in more detail this is the data behind the numbers:

Camera Megapixels
Canon EOS Rebel T3i 18 MP
17915904 pixels
5184 x 3456
Canon EOS 1D X 18,1 MP
17915904 pixels
5184 x 3456

ISO range

Canon EOS 1D X has a larger ISO-range than Canon EOS Rebel T3i. Canon EOS 1D X has an ISO range that stretches from 100 to 51200 while Canon EOS Rebel T3i has 100 to 12800.

Camera ISO Range
Canon EOS Rebel T3i 100-12800
Canon EOS 1D X 100-51200

Autofocus and lens compatibility

Both of these cameras have a built-in autofocus motor. Some lenses, that support autofocus, do not have an autofocus motor of their own but this won't cause any problems with these two cameras.

Here is a complete overview of which lenses work with each camera:
Lens compatibility chart for Canon EOS Rebel T3i
Lens compatibility chart for Canon EOS 1D X

Pictures per second

Depending on what you are shooting the FPS, or frames/pictures per second, can definitely be of interest. Canon EOS Rebel T3i can shoot up to 3,7 pictures per seconds and Canon EOS 1D X can shoot up to 12 pictures per seconds.

Camera FPS (Frames per second)
Canon EOS Rebel T3i 3,7
Canon EOS 1D X 12

Ability to record movies

It is becoming more and more popular to record movies with digital cameras.

In this case, both Canon EOS Rebel T3i and Canon EOS 1D X can shoot movies.

Weight

The weight of the camera can be an extremely important factor, especially if the camera is about to be used, or carried around, for several hours at a time.

Canon EOS 1D X weighs 1340 gr (equal to 2.95 lb) which is 135% heavier than Canon EOS Rebel T3i and its 570 gr (or 1.26 lb).

Camera Weight
Canon EOS Rebel T3i 570 gr
1.26 lb
Canon EOS 1D X 1340 gr
2.95 lb

Canon EOS Rebel T3i vs Canon EOS 1D X Specs

Below you will find the complete and detailed technical specs for both Canon EOS Rebel T3i and Canon EOS 1D X, next to each other. Each category of data is a link to an article covering the subject, giving you a deeper understanding so you can better understand the strengths and weaknesses of the two camera models.

Product
Canon EOS Rebel T3i
Canon EOS 1D X
Name Canon EOS Rebel T3i Canon EOS 1D X
Manufacturer Canon Canon
Release Date and Price
Canon EOS Rebel T3i
Canon EOS 1D X
Release Year 2011 2011
Release Date 2011-02-07 2011-10-18
MSRP 1099 USD 6799 USD
Buy it today
Camera Type
Canon EOS Rebel T3i
Canon EOS 1D X
Camera Type DSLR DSLR
Sensor
Canon EOS Rebel T3i
Canon EOS 1D X
Sensor Size APS-C (approx 22.3 x 14.9 mm) Full Frame (approx 36 x 24 mm)
Sensor Type CMOS CMOS
Resolution 5184 x 3456 pixels 5184 x 3456 pixels
Megapixels 18 MP 18,1 MP
Image Processor DIGIC 4 DUAL DIGIC 5+
Image
Canon EOS Rebel T3i
Canon EOS 1D X
ISO Range 100 - 12800 100 - 51200
White Balance Presets 6 6
Custom White Balance Yes Yes
Image Stabilization No No
Image Stabilization CIPA Rating 0 stops 0 stops
Uncompressed format RAW RAW
Optics & Focus
Canon EOS Rebel T3i
Canon EOS 1D X
Autofocus Motor Yes Yes
Autofocus Contract Detect (sensor)
Phase Detect
Multi Area
Selective Single Point
Single
Continuous
Face Detection
LiveView
Contract Detect (sensor)
Phase Detect
Multi Area
Selective Single Point
Tracking
Single
Continuous
Face Detection
LiveView
Focus Points 9 61
Lens Mount Canon EF
Canon EF-S

See Compatible Lenses
Canon EF

See Compatible Lenses
Focal Length Multiplier APS-C Sensor
1.6x multiplier
Example:
24 mm becomes 38 mm
50 mm becomes 80 mm
100 mm becomes 160 mm
200 mm becomes 320 mm
Full frame
No multiplier
Example:
24 mm remains 24 mm
50 mm remains 50 mm
100 mm remains 100 mm
200 mm remains 200 mm
Screen & Viewfinder
Canon EOS Rebel T3i
Canon EOS 1D X
Articulated LCD Fully articulated Fixed
Screen size 3” 3.2”
Screen dots 1040000 1040000
Touch screen No No
Screen type TFT color LCD, liquid-crystal monitor Clear View II TFT LCD
Live view Yes Yes
Viewfinder Type Optical (pentamirror) Optical (pentaprism)
Viewfinder Coverage 95% 100%
Viewfinder Magnification 0.85× (0.53× 35mm equiv.) 0.76×
Viewfinder Resolution N/A N/A
Photography features
Canon EOS Rebel T3i
Canon EOS 1D X
Frames per second 3,7 fps 12 fps
Minimum Shutter Speed 30 seconds 30 seconds
Maximum Shutter Speed 1/4000 seconds 1/8000 seconds
Built-in Flash Yes No
Built-in Flash Range 13 meters N/A
External Flash Yes Yes
Self-Timer Yes Yes
Time-lapse Yes Yes
Metering modes Multi
Center Weighted
Spot
Partial
Multi
Center Weighted
Spot
Average
Exposure Compensation +/- 5 (at 1/3 EV, 1/2 EV steps) +/- 5 (at 1/3 EV, 1/2 EV steps)
Videography features
Canon EOS Rebel T3i
Canon EOS 1D X
Video recording Yes Yes
Video format MPEG4
H.264
MPEG4
H.264
Video resolution 1280 x 720
1920 x 1080
1280 x 720
1920 x 1080
Built-in Microphone Yes Yes
Built-in Speakers Yes No
Storage
Canon EOS Rebel T3i
Canon EOS 1D X
Memory Card SD/SDHC
Compact Flash
Connectivity
Canon EOS Rebel T3i
Canon EOS 1D X
HDMI Output Yes Yes
Microphone Port No No
Headphone Port No No
Wireless Yes
Eye-Fi Connected
Yes
Optional with LC-5
Remote Control Yes (E3 connector, InfraRed) Yes (N3 connector)
GPS No Yes
Optional with GP-E1 and GP-E2
Body & Dimensions
Canon EOS Rebel T3i
Canon EOS 1D X
Enviromentally sealed No Yes
Battery Battery Pack Battery Pack
Battery Details Lithium-Ion LP-E8 rechargeable battery & charger
Lithium-Ion LP-E4N rechargeable battery & charger
Battery Life (CIPA) 440 shots 1120 shots
Width 133 mm 158 mm
Height 100 mm 164 mm
Depth 80 mm 83 mm
Weight 570 gram 1340 gram