Canon EOS R3 vs Canon EOS Rebel XT

This is a full comparison between the cameras Canon EOS R3 and Canon EOS Rebel XT. We compare them by looking at the categories you see below.

Manufacturing

These cameras are both manufactured by Canon.

Canon EOS R3 were released 2021 and Canon EOS Rebel XT was released 2005. That is a 16 years difference. In tech, this period can be of interest since technology is always improving, etc.

Camera Released
Canon EOS R3 2021
Canon EOS Rebel XT 2005

Type of camera

Canon EOS R3 is a Mirrorless camera while Canon EOS Rebel XT is a DSLR camera. More information about their differences will come soon.

Sensors / crop factor

These cameras have different sensors. Canon EOS R3 has a "Canon Full Frame"-sensor while Canon EOS Rebel XT 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 R3 50 mm
Full-frame sensor
No crop factor/focal length multiplier
Canon EOS Rebel XT 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 R3 has a 24 MP (Megapixels) resolution while Canon EOS Rebel XT has 8 MP. If we break down this in more detail this is the data behind the numbers:

Camera Megapixels
Canon EOS R3 24 MP
24000000 pixels
6000 x 4000
Canon EOS Rebel XT 8 MP
7962624 pixels
3456 x 2304

Canon EOS R3 has a 201 % larger resolution than Canon EOS Rebel XT. 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 R3 has a larger ISO-range than Canon EOS Rebel XT. Canon EOS R3 has an ISO range that stretches from 100 to 102400 while Canon EOS Rebel XT has 100 to 1600.

Camera ISO Range
Canon EOS R3 100-102400
Canon EOS Rebel XT 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.

Worth mentioning is that Canon EOS R3 belongs to the Canon EOS R-system and needs an adapter to work with Canons EF, EF-S, MP-E, and TS-E lenses. You can read more about this adapter here:
Canon Lens Mount Adapter EF-EOS R

Here is a complete overview of which lenses work with each camera:
Lens compatibility chart for Canon EOS R3
Lens compatibility chart for Canon EOS Rebel XT

Pictures per second

Depending on what you are shooting the FPS, or frames/pictures per second, can definitely be of interest. Canon EOS R3 can shoot up to 30 pictures per seconds and Canon EOS Rebel XT can shoot up to 2,8 pictures per seconds.

Camera FPS (Frames per second)
Canon EOS R3 30
Canon EOS Rebel XT 2,8

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 R3. Unfortunately Canon EOS Rebel XT 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 R3 weighs 1015 gr (equal to 2.24 lb) which is 88% heavier than Canon EOS Rebel XT and its 540 gr (or 1.19 lb).

Camera Weight
Canon EOS R3 1015 gr
2.24 lb
Canon EOS Rebel XT 540 gr
1.19 lb

Canon EOS R3 vs Canon EOS Rebel XT Specs

Below you will find the complete and detailed technical specs for both Canon EOS R3 and Canon EOS Rebel XT, 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 R3
Canon EOS Rebel XT
Name Canon EOS R3 Canon EOS Rebel XT
Manufacturer Canon Canon
Release Date and Price
Canon EOS R3
Canon EOS Rebel XT
Release Year 2021 2005
Release Date 2021-04-14 2005-02-17
MSRP 5999 USD 599 USD
Buy it today
Camera Type
Canon EOS R3
Canon EOS Rebel XT
Camera Type Mirrorless DSLR
Sensor
Canon EOS R3
Canon EOS Rebel XT
Sensor Size Full Frame (approx 36 x 24 mm) APS-C (approx 22.3 x 14.9 mm)
Sensor Type Stacked CMOS CMOS
Resolution 6000 x 4000 pixels 3456 x 2304 pixels
Megapixels 24 MP 8 MP
Image Processor DIGIC X DIGIC 2
Image
Canon EOS R3
Canon EOS Rebel XT
ISO Range 100 - 102400 100 - 1600
White Balance Presets 6 6
Custom White Balance No Yes
Image Stabilization Yes
(Sensor-Shift)
No
Image Stabilization CIPA Rating 0 stops 0 stops
Uncompressed format RAW RAW
Optics & Focus
Canon EOS R3
Canon EOS Rebel XT
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 1053 7
Lens Mount Canon RF

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 R3
Canon EOS Rebel XT
Articulated LCD Fully articulated Fixed
Screen size 3.2” 1.8”
Screen dots 4150000 115000
Touch screen Yes No
Screen type TFT LCD N/A
Live view Yes No
Viewfinder Type Electronic Optical (pentamirror)
Viewfinder Coverage 100% 95%
Viewfinder Magnification 0.76× 0.8× (0.5× 35mm equiv.)
Viewfinder Resolution 5760000 N/A
Photography features
Canon EOS R3
Canon EOS Rebel XT
Frames per second 30 fps 2,8 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 +/- 3 (at 1/3 EV, 1/2 EV steps) +/- 2 (at 1/3 EV, 1/2 EV steps)
Videography features
Canon EOS R3
Canon EOS Rebel XT
Video recording Yes No
Video format MPEG4
H.264
H.265
N/A
Video resolution 1920 x 1080
3840 x 2160
4096 x 2160
N/A
Built-in Microphone Yes No
Built-in Speakers Yes No
Storage
Canon EOS R3
Canon EOS Rebel XT
Memory Card Compact Flash Express
SD/SDHC
Compact Flash
Connectivity
Canon EOS R3
Canon EOS Rebel XT
HDMI Output Yes No
Microphone Port Yes No
Headphone Port Yes No
Wireless Yes
Built-in (802.11ac + Bluetooth)
No
Remote Control Yes (via smartphone) Yes (E3 connector, InfraRed)
GPS Yes
Built-in
No
Body & Dimensions
Canon EOS R3
Canon EOS Rebel XT
Enviromentally sealed Yes No
Battery Built-in Battery Pack
Battery Details LP-E19 lithium-ion battery & charger
Battery Pack NB-2LH
Battery Life (CIPA) 760 shots N/A
Width 150 mm 127 mm
Height 143 mm 94 mm
Depth 87 mm 64 mm
Weight 1015 gram 540 gram