Canon EOS Rebel XSi vs Canon EOS 1D X

This is a full comparison between the cameras Canon EOS Rebel XSi and Canon EOS 1D X. We compare them by looking at the categories you see below.

Manufacturing

These cameras are both manufactured by Canon.

Type of camera

Both these cameras are DSLR cameras. No difference there.

Sensors / crop factor

These cameras have different sensors. Canon EOS Rebel XSi has a "Canon APS-C"-sensor while Canon EOS 1D X 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.

** 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 XSi has a 12,2 MP (Megapixels) resolution while Canon EOS 1D X has 18,1 MP. If we break down this in more detail this is the data behind the numbers:

Canon EOS 1D X has a 47 % larger resolution than Canon EOS Rebel XSi. 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 has a larger ISO-range than Canon EOS Rebel XSi. Canon EOS 1D X has an ISO range that stretches from 100 to 51200 while Canon EOS Rebel XSi has 100 to 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 XSi
Lens compatibility chart for Canon EOS 1D X

Pictures per second

Depending on what you are shooting the FPS, or frames/pictures per second, can definitely be of interest. Canon EOS Rebel XSi can shoot up to 3,5 pictures per seconds and Canon EOS 1D X can shoot up to 12 pictures per seconds.

Ability to record movies

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

It is only one of these two cameras that support recording movies and movie clips and that is Canon EOS 1D X. Sadly, the Canon EOS Rebel XSi does not support this.

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 weighs 1340 gr (equal to 2.95 lb) which is 156% heavier than Canon EOS Rebel XSi and its 524 gr (or 1.16 lb).

Canon EOS Rebel XSi vs Canon EOS 1D X Specs

Below you will find the complete and detailed technical specs for both Canon EOS Rebel XSi and Canon EOS 1D X, 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 XSi	Canon EOS 1D X
Name	Canon EOS Rebel XSi	Canon EOS 1D X
Manufacturer	Canon	Canon
Release Date and Price	Canon EOS Rebel XSi	Canon EOS 1D X
Release Year	2008	2011
Release Date	2008-01-24	2011-10-18
MSRP	799 USD	6799 USD
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Camera Type	Canon EOS Rebel XSi	Canon EOS 1D X
Camera Type	DSLR	DSLR
Sensor	Canon EOS Rebel XSi	Canon EOS 1D X
Sensor Size	APS-C (approx 22.3 x 14.9 mm)	Full Frame (approx 36 x 24 mm)
Sensor Type	CMOS	CMOS
Resolution	4272 x 2848 pixels	5184 x 3456 pixels
Megapixels	12,2 MP	18,1 MP
Image Processor	DIGIC 3	DUAL DIGIC 5+
Image	Canon EOS Rebel XSi	Canon EOS 1D X
ISO Range	100 - 1600	100 - 51200
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 XSi	Canon EOS 1D X
Autofocus Motor	Yes	Yes
Autofocus	Contract Detect (sensor) Phase Detect Multi Area Selective Single Point Tracking Single Continuous	Contract Detect (sensor) Phase Detect Multi Area Selective Single Point Tracking Single Continuous Face Detection LiveView
Focus Points	9	61
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 XSi	Canon EOS 1D X
Articulated LCD	Fixed	Fixed
Screen size	3”	3.2”
Screen dots	230000	1040000
Touch screen	No	No
Screen type	N/A	Clear View II TFT LCD
Live view	Yes	Yes
Viewfinder Type	Optical (pentamirror)	Optical (pentaprism)
Viewfinder Coverage	95%	100%
Viewfinder Magnification	0.87× (0.54× 35mm equiv.)	0.76×
Viewfinder Resolution	N/A	N/A
Photography features	Canon EOS Rebel XSi	Canon EOS 1D X
Frames per second	3,5 fps	12 fps
Minimum Shutter Speed	30 seconds	30 seconds
Maximum Shutter Speed	1/4000 seconds	1/8000 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 Partial	Multi Center Weighted Spot Average
Exposure Compensation	+/- 2 (at 1/3 EV, 1/2 EV steps)	+/- 5 (at 1/3 EV, 1/2 EV steps)
Videography features	Canon EOS Rebel XSi	Canon EOS 1D X
Video recording	No	Yes
Video format	N/A	MPEG4 H.264
Video resolution	N/A	1280 x 720 1920 x 1080
Built-in Microphone	No	Yes
Built-in Speakers	No	No
Storage	Canon EOS Rebel XSi	Canon EOS 1D X
Memory Card	SD/SDHC	Compact Flash
Connectivity	Canon EOS Rebel XSi	Canon EOS 1D X
HDMI Output	No	Yes
Microphone Port	No	No
Headphone Port	No	No
Wireless	No	Yes Optional with LC-5
Remote Control	Yes (E3 connector, InfraRed)	Yes (N3 connector)
GPS	No	Yes Optional with GP-E1 and GP-E2
Body & Dimensions	Canon EOS Rebel XSi	Canon EOS 1D X
Enviromentally sealed	No	Yes
Battery	Battery Pack	Battery Pack
Battery Details	Battery Pack LP-E5	Lithium-Ion LP-E4N rechargeable battery & charger
Battery Life (CIPA)	600 shots	1120 shots
Width	129 mm	158 mm
Height	98 mm	164 mm
Depth	62 mm	83 mm
Weight	524 gram	1340 gram