Camera Rocket Review Our evaluation of T3i vs 7D Mark II

Image Quality

RAW image quality independent of lens

DxOMark Low light, DxOMark Color depth and DxOMark Dynamic range


How fast and easily does the camera nail focus

Focus lag, cross type focus points and focus points


How much delay is there between you and your photo?

Focus lag, continuous shooting and Startup delay


What do the experts think?

Reviews from,,, and 3 more

No winner declared

Too close to call

Benchmarks Real world tests of Rebel T3i vs EOS 7D Mark II

Low light image quality Highest ISO setting that still achieves great image quality

Rebel T3i
793 ISO
EOS 7D Mark II
1,082 ISO

Focus lag Delay between fully pressing shutter to image capture

Rebel T3i
283 ms

Shutter lag Delay to take a photo when prefocused

Startup delay Delay from power on to first photo

Rebel T3i
1,500 ms

Continuous shooting Delay between fully pressing shutter to image capture

Rebel T3i
3.7 fps

Battery life How many photos per battery charge (CIPA)

Rebel T3i
440 photos
EOS 7D Mark II
670 photos

Features Key features of the Rebel T3i  vs EOS 7D Mark II 

Megapixels Maximum resolution images are captured at

Rebel T3i
17.9 MP

Max ISO Maximum light sensitivity of the sensor

Rebel T3i
12,800 ISO
EOS 7D Mark II
51,200 ISO

Focus points How many different points the camera can focus on

Screen size Larger screens make it easier to preview and review photos

Viewfinder size Large viewfinders are brighter and more comfortable to use

Pixel size How much area of the sensor is dedicated to each pixel

Rebel T3i
18.5 microns
EOS 7D Mark II
16.8 microns

Reviews Word on the street

Specifications Full list of technical specs


Rebel T3i  vs
EOS 7D Mark II 
Megapixels 17.9 MP 20 MP
Resolution 5184 x 3456 5472 x 3648
Area 22.3 x 14.9 mm 22.4 x 15 mm
Crop factor 1.6x 1.6x
Pixel size 18.5 microns 16.8 microns
Light sensitivity 100 ISO to 6,400 ISO 100 ISO to 16,000 ISO
Light sensitivity (Boost) 6,400 ISO to 12,800 ISO 100 ISO to 51,200 ISO
Self cleaning sensor Yes Yes

focus system

Type Phase detection Phase detection
Focus points 9 65
Cross type focus points 1 65
Supports continuous No Yes


Viewfinder mirror Opaque Opaque
Viewfinder Yes Yes
Type Pentamirror Pentaprism
Coverage 95% 100%
Magnification 0.85x 1x
Viewfinder size 0.53x 0.62x


Max continuous shooting 3.7 fps 10 fps
Battery life 440 670
Continuous shooting
3.7 fps, JPEG
10 fps
Focus lag 283 ms 249 ms
Shutter lag 87 ms 52 ms
Startup delay 1,500 ms 500 ms


Rebel T3i  vs
EOS 7D Mark II 
Video 1920 x 1080 @ 30 fps 1920 x 1080 @ 59.94 fps (MPEG-4)
Shoots video in 24p Yes Yes
Shoots high speed video No No
External mic jack 3.5mm 3.5mm
Autofocus while shooting video Manual Hybrid detection
Autofocus type N/A Hybrid detection
Autofocus supports continuous N/A Yes


Size 3" 3"
Resolution 1,040 k dots 1,040 k dots
Has a touch screen No No
Has a flip out screen Yes No
Supports live view Yes Yes


Min 30 s 30 s
Max 1/4000 s 1/8000 s

form factor

Size 133.1 x 99.5 x 79.7 mm 149 x 112 x 78 mm
Thickness 79.7 mm 78 mm
Weight 570 g 910 g
Is weather sealed No Yes


Includes a GPS No Yes
Supports HDR No Yes
Automatic panorama No No
Create realistic 3D images No No
Image stabilization
Canon Rebel T3i
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Canon EOS 7D Mark II
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