Canon EOS Rebel T3i vs Canon EOS 6D Mark II

This is a full comparison between the cameras Canon EOS Rebel T3i and Canon EOS 6D Mark II. We compare them by looking at the categories you see below.

Manufacturing

These cameras are both manufactured by Canon.

Canon EOS Rebel T3i were released 2011 and Canon EOS 6D Mark II was released 2017. That is a 6 years difference. In tech, this period can be of interest since technology is always improving, etc.

Camera Released
Canon EOS Rebel T3i 2011
Canon EOS 6D Mark II 2017

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 6D Mark II 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 6D Mark II 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

Canon EOS Rebel T3i has a 18 MP (Megapixels) resolution while Canon EOS 6D Mark II has 26 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 6D Mark II 26 MP
25958400 pixels
6240 x 4160

Canon EOS 6D Mark II has a 45 % larger resolution than Canon EOS Rebel T3i. This could give you more details in the picture but also a possibility to crop more in the pictures, afterward while editing the pictures, if needed that is.

ISO range

Canon EOS 6D Mark II has a larger ISO-range than Canon EOS Rebel T3i. Canon EOS 6D Mark II has an ISO range that stretches from 100 to 40000 while Canon EOS Rebel T3i has 100 to 12800.

Camera ISO Range
Canon EOS Rebel T3i 100-12800
Canon EOS 6D Mark II 100-40000

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 6D Mark II

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 6D Mark II can shoot up to 6,5 pictures per seconds.

Camera FPS (Frames per second)
Canon EOS Rebel T3i 3,7
Canon EOS 6D Mark II 6,5

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 6D Mark II 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 6D Mark II weighs 765 gr (equal to 1.69 lb) which is 34% 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 6D Mark II 765 gr
1.69 lb

Canon EOS Rebel T3i vs Canon EOS 6D Mark II Specs

Below you will find the complete and detailed technical specs for both Canon EOS Rebel T3i and Canon EOS 6D Mark II, 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 6D Mark II
Name Canon EOS Rebel T3i Canon EOS 6D Mark II
Manufacturer Canon Canon
Release Date and Price
Canon EOS Rebel T3i
Canon EOS 6D Mark II
Release Year 2011 2017
Release Date 2011-02-07 2017-06-29
MSRP 1099 USD 1999 USD
Buy it today
Camera Type
Canon EOS Rebel T3i
Canon EOS 6D Mark II
Camera Type DSLR DSLR
Sensor
Canon EOS Rebel T3i
Canon EOS 6D Mark II
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 6240 x 4160 pixels
Megapixels 18 MP 26 MP
Image Processor DIGIC 4 DIGIC 7
Image
Canon EOS Rebel T3i
Canon EOS 6D Mark II
ISO Range 100 - 12800 100 - 40000
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 6D Mark II
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
Center
Selective Single Point
Tracking
Single
Continuous
Touch
Face Detection
LiveView
Focus Points 9 45
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 6D Mark II
Articulated LCD Fully articulated Fully articulated
Screen size 3” 3”
Screen dots 1040000 1040000
Touch screen No Yes
Screen type TFT color LCD, liquid-crystal monitor TFT LCD
Live view Yes Yes
Viewfinder Type Optical (pentamirror) Optical (pentaprism)
Viewfinder Coverage 95% 98%
Viewfinder Magnification 0.85× (0.53× 35mm equiv.) 0.71×
Viewfinder Resolution N/A 0
Photography features
Canon EOS Rebel T3i
Canon EOS 6D Mark II
Frames per second 3,7 fps 6,5 fps
Minimum Shutter Speed 30 seconds 30 seconds
Maximum Shutter Speed 1/4000 seconds 1/4000 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
Partial
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 6D Mark II
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 Yes
Storage
Canon EOS Rebel T3i
Canon EOS 6D Mark II
Memory Card SD/SDHC
SD/SDHC
Connectivity
Canon EOS Rebel T3i
Canon EOS 6D Mark II
HDMI Output Yes Yes
Microphone Port No Yes
Headphone Port No No
Wireless Yes
Eye-Fi Connected
Yes
Built-In 802.11b/g/n + NFC + Bluetooth
Remote Control Yes (E3 connector, InfraRed) Yes (wired, wireless or smartphone)
GPS No Yes
Built-in
Body & Dimensions
Canon EOS Rebel T3i
Canon EOS 6D Mark II
Enviromentally sealed No Yes
Battery Battery Pack Battery Pack
Battery Details Lithium-Ion LP-E8 rechargeable battery & charger
LP-E6N lithium-ion battery & charger
Battery Life (CIPA) 440 shots 1200 shots
Width 133 mm 144 mm
Height 100 mm 111 mm
Depth 80 mm 75 mm
Weight 570 gram 765 gram