Camera Rocket Review Our evaluation of T4i vs 100D

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

Camera Rocket Score

Image Quality, Focusing, Responsiveness and Reviews

Canon Rebel T4i 

Camera Rocket recommends the Canon Rebel T4i  based on its focusing and reviews.

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Benchmarks Real world tests of Rebel T4i vs EOS 100D

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

Rebel T4i
722 ISO
EOS 100D
843 ISO

Focus lag Delay between fully pressing shutter to image capture

Rebel T4i
269 ms
EOS 100D
264 ms

Shutter lag Delay to take a photo when prefocused

Rebel T4i
74 ms
EOS 100D
76 ms

Startup delay Delay from power on to first photo

Rebel T4i
700 ms
EOS 100D
600 ms

Continuous shooting Delay between fully pressing shutter to image capture

Rebel T4i
5 fps
EOS 100D
4 fps

Battery life How many photos per battery charge (CIPA)

Rebel T4i
440 photos
EOS 100D
380 photos

Features Key features of the Rebel T4i  vs EOS 100D 

Megapixels Maximum resolution images are captured at

Rebel T4i
17.9 MP
EOS 100D
17.9 MP

Max ISO Maximum light sensitivity of the sensor

Rebel T4i
25,600 ISO
EOS 100D
25,600 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

Rebel T4i
EOS 100D

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

Rebel T4i
18.5 microns
EOS 100D
18.5 microns

Reviews Word on the street

Rebel T4i  vs EOS 100D 

While video is probably the main application for the SL1’s improved Hybrid AF, I was pleasantly surprised by how well it worked when composing and shooting casual snapshots.
EOS 100D

The control layout on the back remains essentially unchanged, but Canon tweaked the design on the menu and info buttons for the better; they're slighly easier to feel now.
Rebel T4i

With its touchscreen, Hybrid AF and other user-friendly functions, the Canon 650D transforms the way you use a camera and how you take pictures.
Rebel T4i


8.4 Out of 10
8.2 Out of 10

Specifications Full list of technical specs


Rebel T4i  vs
EOS 100D 
Megapixels 17.9 MP 17.9 MP
Resolution 5184 x 3456 5184 x 3456
Area 22.3 x 14.9 mm 22.3 x 14.9 mm
Crop factor 1.6x 1.6x
Pixel size 18.5 microns 18.5 microns
Light sensitivity 100 ISO to 12,800 ISO 100 ISO to 12,800 ISO
Light sensitivity (Boost) 12,800 ISO to 25,600 ISO Unknown to 25,600 ISO
CR2 14bit
Self cleaning sensor Yes Yes

focus system

Type Phase detection Hybrid detection
Focus points 9 9
Cross type focus points 9 1
Supports continuous Yes Yes


Viewfinder mirror Opaque Opaque
Viewfinder Yes Yes
Type Pentamirror Pentamirror
Coverage 95% 95%
Magnification 0.85x 0.87x
Viewfinder size 0.53x 0.54x


Max continuous shooting 5 fps 4 fps
Battery life 440 380
Continuous shooting
5 fps @ 5184 x 3456, JPEG, 22 shots
5 fps @ 5184 x 3456, RAW, 6 shots
4 fps, JPEG
Focus lag 269 ms 264 ms
Shutter lag 74 ms 76 ms
Startup delay 700 ms 600 ms


Rebel T4i  vs
EOS 100D 
Video 1920 x 1080 @ 30 fps (MPEG-4) 1920 x 1080 @ 30 fps
Shoots video in 24p Yes Yes
Shoots high speed video No No
External mic jack 3.5mm 3.5mm
Autofocus while shooting video Contrast detection Contrast detection
Autofocus type Contrast detection Contrast detection
Autofocus supports continuous Yes Yes


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


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

form factor

Size 133.1 x 99.8 x 78.8 mm 117 x 91 x 69 mm
Thickness 78.8 mm 69 mm
Weight 575 g 407 g
Is weather sealed No No


Includes a GPS No No
Supports HDR Yes Yes
Automatic panorama No No
Create realistic 3D images No No
Image stabilization
Canon Rebel T4i
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Canon EOS 100D
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