Canon EOS Rebel XSi vs Canon EOS 90D

This is a full comparison between the cameras Canon EOS Rebel XSi and Canon EOS 90D. We compare them by looking at the categories you see below.

Manufacturing

These cameras are both manufactured by Canon.

Canon EOS Rebel XSi were released 2008 and Canon EOS 90D was released 2019. 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 XSi 2008
Canon EOS 90D 2019

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 XSi 80 mm
Canon APS-C sensor
Crop factor/focal length multiplier by * 1.6
Canon EOS 90D 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 XSi has a 12,2 MP (Megapixels) resolution while Canon EOS 90D has 33 MP. If we break down this in more detail this is the data behind the numbers:

Camera Megapixels
Canon EOS Rebel XSi 12,2 MP
12166656 pixels
4272 x 2848
Canon EOS 90D 33 MP
32294400 pixels
6960 x 4640

Canon EOS 90D has a 165 % 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 90D has a larger ISO-range than Canon EOS Rebel XSi. Canon EOS 90D has an ISO range that stretches from 100 to 25600 while Canon EOS Rebel XSi has 100 to 1600.

Camera ISO Range
Canon EOS Rebel XSi 100-1600
Canon EOS 90D 100-25600

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 90D

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 90D can shoot up to 11 pictures per seconds.

Camera FPS (Frames per second)
Canon EOS Rebel XSi 3,5
Canon EOS 90D 11

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 90D. 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 90D weighs 701 gr (equal to 1.55 lb) which is 34% heavier than Canon EOS Rebel XSi and its 524 gr (or 1.16 lb).

Camera Weight
Canon EOS Rebel XSi 524 gr
1.16 lb
Canon EOS 90D 701 gr
1.55 lb

Canon EOS Rebel XSi vs Canon EOS 90D Specs

Below you will find the complete and detailed technical specs for both Canon EOS Rebel XSi and Canon EOS 90D, 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 90D
Name Canon EOS Rebel XSi Canon EOS 90D
Manufacturer Canon Canon
Release Date and Price
Canon EOS Rebel XSi
Canon EOS 90D
Release Year 2008 2019
Release Date 2008-01-24 2019-08-28
MSRP 799 USD 1199 USD
Buy it today
Camera Type
Canon EOS Rebel XSi
Canon EOS 90D
Camera Type DSLR DSLR
Sensor
Canon EOS Rebel XSi
Canon EOS 90D
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 4272 x 2848 pixels 6960 x 4640 pixels
Megapixels 12,2 MP 33 MP
Image Processor DIGIC 3 DIGIC 8
Image
Canon EOS Rebel XSi
Canon EOS 90D
ISO Range 100 - 1600 100 - 25600
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 90D
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
Center
Selective Single Point
Tracking
Single
Continuous
Touch
Face Detection
LiveView
Focus Points 9 45
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 XSi
Canon EOS 90D
Articulated LCD Fixed Fully articulated
Screen size 3” 3”
Screen dots 230000 1040000
Touch screen No Yes
Screen type N/A TFT LCD
Live view Yes Yes
Viewfinder Type Optical (pentamirror) Optical (pentaprism)
Viewfinder Coverage 95% 100%
Viewfinder Magnification 0.87× (0.54× 35mm equiv.) 0.95× (0.59× 35mm equiv.)
Viewfinder Resolution N/A 0
Photography features
Canon EOS Rebel XSi
Canon EOS 90D
Frames per second 3,5 fps 11 fps
Minimum Shutter Speed 30 seconds 30 seconds
Maximum Shutter Speed 1/4000 seconds 1/8000 seconds
Built-in Flash Yes Yes
Built-in Flash Range 13 meters 12 meters
External Flash Yes Yes
Self-Timer Yes Yes
Time-lapse Yes Yes
Metering modes Multi
Center Weighted
Partial
Multi
Center Weighted
Spot
Partial
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 90D
Video recording No Yes
Video format N/A MPEG4
H.264
Video resolution N/A 1280 x 720
1920 x 1080
3840 x 2160
Built-in Microphone No Yes
Built-in Speakers No Yes
Storage
Canon EOS Rebel XSi
Canon EOS 90D
Memory Card SD/SDHC
SD/SDHC
Connectivity
Canon EOS Rebel XSi
Canon EOS 90D
HDMI Output No Yes
Microphone Port No Yes
Headphone Port No Yes
Wireless No Yes
Built-In 802.11b/g/n with Bluetooth
Remote Control Yes (E3 connector, InfraRed) Yes (Wired , wireless or smartphone)
GPS No No
Body & Dimensions
Canon EOS Rebel XSi
Canon EOS 90D
Enviromentally sealed No Yes
Battery Battery Pack Battery Pack
Battery Details Battery Pack LP-E5
LP-E6N lithium-ion battery & charger
Battery Life (CIPA) 600 shots 1300 shots
Width 129 mm 141 mm
Height 98 mm 105 mm
Depth 62 mm 77 mm
Weight 524 gram 701 gram