Canon EOS Rebel T7i vs Canon EOS 400D

This is a full comparison between the cameras Canon EOS Rebel T7i and Canon EOS 400D. We compare them by looking at the categories you see below.

Manufacturing

These cameras are both manufactured by Canon.

Canon EOS Rebel T7i were released 2017 and Canon EOS 400D was released 2006. That is a 11 years difference. In tech, this period can be of interest since technology is always improving, etc.

Camera Released
Canon EOS Rebel T7i 2017
Canon EOS 400D 2006

Type of camera

Both these cameras are DSLR cameras. No difference there.

Sensors / crop factor

Both these cameras have the same sorts of sensor (called "Canon APS-C") which means that if you compare these cameras side by side the lenses will also have the same experienced focal length. Neither of the cameras has a Full frame sensor which means that you will get a "crop factor" where the camera's sensor size affect the focal length with a multiplier.

Camera Focal length, 50mm f/1.8 **
Canon EOS Rebel T7i 80 mm
Canon APS-C sensor
Crop factor/focal length multiplier by * 1.6
Canon EOS 400D 80 mm
Canon APS-C sensor
Crop factor/focal length multiplier by * 1.6

** 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 T7i has a 24 MP (Megapixels) resolution while Canon EOS 400D has 10,1 MP. If we break down this in more detail this is the data behind the numbers:

Camera Megapixels
Canon EOS Rebel T7i 24 MP
24000000 pixels
6000 x 4000
Canon EOS 400D 10,1 MP
10077696 pixels
3888 x 2592

Canon EOS Rebel T7i has a 138 % larger resolution than Canon EOS 400D. 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 Rebel T7i has a larger ISO-range than Canon EOS 400D. Canon EOS Rebel T7i has an ISO range that stretches from 100 to 25600 while Canon EOS 400D has 100 to 1600.

Camera ISO Range
Canon EOS Rebel T7i 100-25600
Canon EOS 400D 100-1600

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 T7i
Lens compatibility chart for Canon EOS 400D

Pictures per second

Depending on what you are shooting the FPS, or frames/pictures per second, can definitely be of interest. Canon EOS Rebel T7i can shoot up to 6 pictures per seconds and Canon EOS 400D can shoot up to 3 pictures per seconds.

Camera FPS (Frames per second)
Canon EOS Rebel T7i 6
Canon EOS 400D 3

Ability to record movies

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

When comparing these two cameras there is only one of them that can shoot movies and that is Canon EOS Rebel T7i. Unfortunately Canon EOS 400D does not support recording movies and movie clips.

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 400D weighs 556 gr (equal to 1.23 lb) which is 5% heavier than Canon EOS Rebel T7i and its 532 gr (or 1.17 lb).

Camera Weight
Canon EOS Rebel T7i 532 gr
1.17 lb
Canon EOS 400D 556 gr
1.23 lb

Canon EOS Rebel T7i vs Canon EOS 400D Specs

Below you will find the complete and detailed technical specs for both Canon EOS Rebel T7i and Canon EOS 400D, 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 T7i
Canon EOS 400D
Name Canon EOS Rebel T7i Canon EOS 400D
Manufacturer Canon Canon
Release Date and Price
Canon EOS Rebel T7i
Canon EOS 400D
Release Year 2017 2006
Release Date 2017-02-15 2006-08-24
MSRP 749 USD 799 USD
Buy it today
Camera Type
Canon EOS Rebel T7i
Canon EOS 400D
Camera Type DSLR DSLR
Sensor
Canon EOS Rebel T7i
Canon EOS 400D
Sensor Size APS-C (approx 22.3 x 14.9 mm) APS-C (approx 22.3 x 14.9 mm)
Sensor Type CMOS CMOS
Resolution 6000 x 4000 pixels 3888 x 2592 pixels
Megapixels 24 MP 10,1 MP
Image Processor DIGIC 7 DIGIC 2
Image
Canon EOS Rebel T7i
Canon EOS 400D
ISO Range 100 - 25600 100 - 1600
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 T7i
Canon EOS 400D
Autofocus Motor Yes Yes
Autofocus Contract Detect (sensor)
Phase Detect
Multi Area
Center
Selective Single Point
Tracking
Single
Continuous
Touch
Face Detection
LiveView
Phase Detect
Multi Area
Selective Single Point
Single
Continuous
Focus Points 45 9
Lens Mount Canon EF
Canon EF-S

See Compatible Lenses
Canon EF
Canon EF-S

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
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
Screen & Viewfinder
Canon EOS Rebel T7i
Canon EOS 400D
Articulated LCD Fully articulated Fixed
Screen size 3” 2,5”
Screen dots 1040000 230000
Touch screen Yes No
Screen type TFT LCD N/A
Live view Yes No
Viewfinder Type Optical (pentamirror) Optical (pentamirror)
Viewfinder Coverage 95% 95%
Viewfinder Magnification 0.82× (0.51× 35mm equiv.) 0.8× (0.5× 35mm equiv.)
Viewfinder Resolution 0 N/A
Photography features
Canon EOS Rebel T7i
Canon EOS 400D
Frames per second 6 fps 3 fps
Minimum Shutter Speed 30 seconds 30 seconds
Maximum Shutter Speed 1/4000 seconds 1/4000 seconds
Built-in Flash Yes Yes
Built-in Flash Range 12 meters 12 meters
External Flash Yes Yes
Self-Timer Yes Yes
Time-lapse Yes Yes
Metering modes Multi
Spot
Partial
Average
Multi
Center Weighted
Partial
Exposure Compensation +/- 5 (at 1/3 EV, 1/2 EV steps) +/- 2 (at 1/3 EV, 1/2 EV steps)
Videography features
Canon EOS Rebel T7i
Canon EOS 400D
Video recording Yes No
Video format MPEG4
H.264
N/A
Video resolution 1280 x 720
1920 x 1080
N/A
Built-in Microphone Yes No
Built-in Speakers Yes No
Storage
Canon EOS Rebel T7i
Canon EOS 400D
Memory Card SD/SDHC
Compact Flash
Connectivity
Canon EOS Rebel T7i
Canon EOS 400D
HDMI Output Yes No
Microphone Port Yes No
Headphone Port No No
Wireless Yes
Built-in (Includes Bluetooth LE and NFC)
No
Remote Control Yes (via smartphone or Bluetooth remote) Yes (E3 connector, InfraRed)
GPS Yes
Optional via Canon GP-E2 GPS Receiver
No
Body & Dimensions
Canon EOS Rebel T7i
Canon EOS 400D
Enviromentally sealed No No
Battery Battery Pack Battery Pack
Battery Details LP-E17 lithium-ion battery & charger
NB-2L
Battery Life (CIPA) 600 shots 370 shots
Width 131 mm 127 mm
Height 100 mm 94 mm
Depth 76 mm 65 mm
Weight 532 gram 556 gram