Canon EOS 1D X Mark III vs Canon EOS 400D

This is a full comparison between the cameras Canon EOS 1D X Mark III 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 1D X Mark III were released 2020 and Canon EOS 400D was released 2006. That is a 14 years difference. In tech, this period can be of interest since technology is always improving, etc.

Camera Released
Canon EOS 1D X Mark III 2020
Canon EOS 400D 2006

Type of camera

Both these cameras are DSLR cameras. No difference there.

Sensors / crop factor

These cameras have different sensors. Canon EOS 1D X Mark III has a "Canon Full Frame"-sensor while Canon EOS 400D has a "Canon APS-C"-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 1D X Mark III 50 mm
Full-frame sensor
No crop factor/focal length multiplier
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 1D X Mark III has a 20 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 1D X Mark III 20 MP
19961856 pixels
5472 x 3648
Canon EOS 400D 10,1 MP
10077696 pixels
3888 x 2592

Canon EOS 1D X Mark III has a 98 % 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 1D X Mark III has a larger ISO-range than Canon EOS 400D. Canon EOS 1D X Mark III has an ISO range that stretches from 100 to 102400 while Canon EOS 400D has 100 to 1600.

Camera ISO Range
Canon EOS 1D X Mark III 100-102400
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 1D X Mark III
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 1D X Mark III can shoot up to 20 pictures per seconds and Canon EOS 400D can shoot up to 3 pictures per seconds.

Camera FPS (Frames per second)
Canon EOS 1D X Mark III 20
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 1D X Mark III. 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 1D X Mark III weighs 1440 gr (equal to 3.17 lb) which is 159% heavier than Canon EOS 400D and its 556 gr (or 1.23 lb).

Camera Weight
Canon EOS 1D X Mark III 1440 gr
3.17 lb
Canon EOS 400D 556 gr
1.23 lb

Canon EOS 1D X Mark III vs Canon EOS 400D Specs

Below you will find the complete and detailed technical specs for both Canon EOS 1D X Mark III 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 1D X Mark III
Canon EOS 400D
Name Canon EOS 1D X Mark III Canon EOS 400D
Manufacturer Canon Canon
Release Date and Price
Canon EOS 1D X Mark III
Canon EOS 400D
Release Year 2020 2006
Release Date 2020-01-07 2006-08-24
MSRP 6499 USD 799 USD
Buy it today
Camera Type
Canon EOS 1D X Mark III
Canon EOS 400D
Camera Type DSLR DSLR
Sensor
Canon EOS 1D X Mark III
Canon EOS 400D
Sensor Size Full Frame (approx 36 x 24 mm) APS-C (approx 22.3 x 14.9 mm)
Sensor Type CMOS CMOS
Resolution 5472 x 3648 pixels 3888 x 2592 pixels
Megapixels 20 MP 10,1 MP
Image Processor DIGIC X DIGIC 2
Image
Canon EOS 1D X Mark III
Canon EOS 400D
ISO Range 100 - 102400 100 - 1600
White Balance Presets 7 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 1D X Mark III
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 191 9
Lens Mount Canon EF

See Compatible Lenses
Canon EF
Canon EF-S

See Compatible Lenses
Focal Length Multiplier 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
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 1D X Mark III
Canon EOS 400D
Articulated LCD Fixed Fixed
Screen size 3.2” 2,5”
Screen dots 2100000 230000
Touch screen Yes No
Screen type TFT LCD N/A
Live view Yes No
Viewfinder Type Optical (pentaprism) Optical (pentamirror)
Viewfinder Coverage 100% 95%
Viewfinder Magnification 0.76× 0.8× (0.5× 35mm equiv.)
Viewfinder Resolution 0 N/A
Photography features
Canon EOS 1D X Mark III
Canon EOS 400D
Frames per second 20 fps 3 fps
Minimum Shutter Speed 30 seconds 30 seconds
Maximum Shutter Speed 1/8000 seconds 1/4000 seconds
Built-in Flash No Yes
Built-in Flash Range N/A 12 meters
External Flash Yes Yes
Self-Timer Yes Yes
Time-lapse Yes Yes
Metering modes Multi
Center Weighted
Spot
Partial
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 1D X Mark III
Canon EOS 400D
Video recording Yes No
Video format MPEG4
H.264
H.265
N/A
Video resolution 1280 x 720
1920 x 1080
3840 x 2160
4096 x 2160
N/A
Built-in Microphone Yes No
Built-in Speakers Yes No
Storage
Canon EOS 1D X Mark III
Canon EOS 400D
Memory Card Compact Flash Express
Compact Flash
Connectivity
Canon EOS 1D X Mark III
Canon EOS 400D
HDMI Output Yes No
Microphone Port Yes No
Headphone Port Yes No
Wireless Yes
Built-in (Wireless LAN (IEEE802.11b/g/n) (2.4 GHz only), with Bluetooth support)
No
Remote Control Remote control with N3 type contact Yes (E3 connector, InfraRed)
GPS Yes
Built-in
No
Body & Dimensions
Canon EOS 1D X Mark III
Canon EOS 400D
Enviromentally sealed Yes No
Battery Battery Pack Battery Pack
Battery Details LP-E19 lithium-ion battery & dual charger
NB-2L
Battery Life (CIPA) 2850 shots 370 shots
Width 158 mm 127 mm
Height 168 mm 94 mm
Depth 83 mm 65 mm
Weight 1440 gram 556 gram