Canon EOS R3 vs Canon EOS M100

This is a full comparison between the cameras Canon EOS R3 and Canon EOS M100. 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 M100 was released 2017. That is a 4 years difference. In tech, this period can be of interest since technology is always improving, etc.

Camera Released
Canon EOS R3 2021
Canon EOS M100 2017

Type of camera

Both these cameras are Mirrorless cameras. No difference there.

Sensors / crop factor

These cameras have different sensors. Canon EOS R3 has a "Canon Full Frame"-sensor while Canon EOS M100 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 M100 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

Both these cameras have the exact same resolution. Canon EOS R3 has a 24 MP (Megapixels) resolution while Canon EOS M100 has 24 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 M100 24 MP
24000000 pixels
6000 x 4000

ISO range

Canon EOS R3 has a larger ISO-range than Canon EOS M100. Canon EOS R3 has an ISO range that stretches from 100 to 102400 while Canon EOS M100 has 100 to 25600.

Camera ISO Range
Canon EOS R3 100-102400
Canon EOS M100 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.

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

Worth mentioning is that Canon EOS M100 belongs to the Canon EOS M-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 M

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 M100

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 M100 can shoot up to 6,1 pictures per seconds.

Camera FPS (Frames per second)
Canon EOS R3 30
Canon EOS M100 6,1

Ability to record movies

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

In this case, both Canon EOS R3 and Canon EOS M100 can shoot movies.

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 236% heavier than Canon EOS M100 and its 302 gr (or 0.67 lb).

Camera Weight
Canon EOS R3 1015 gr
2.24 lb
Canon EOS M100 302 gr
0.67 lb

Canon EOS R3 vs Canon EOS M100 Specs

Below you will find the complete and detailed technical specs for both Canon EOS R3 and Canon EOS M100, 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 M100
Name Canon EOS R3 Canon EOS M100
Manufacturer Canon Canon
Release Date and Price
Canon EOS R3
Canon EOS M100
Release Year 2021 2017
Release Date 2021-04-14 2017-08-29
MSRP 5999 USD 599 USD
Buy it today
Camera Type
Canon EOS R3
Canon EOS M100
Camera Type Mirrorless Mirrorless
Sensor
Canon EOS R3
Canon EOS M100
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 6000 x 4000 pixels
Megapixels 24 MP 24 MP
Image Processor DIGIC X DIGIC 7
Image
Canon EOS R3
Canon EOS M100
ISO Range 100 - 102400 100 - 25600
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 M100
Autofocus Motor Yes Yes
Autofocus Contract Detect (sensor)
Phase Detect
Multi Area
Center
Selective Single Point
Tracking
Single
Continuous
Touch
Face Detection
LiveView
Contract Detect (sensor)
Phase Detect
Multi Area
Center
Selective Single Point
Tracking
Single
Continuous
Touch
Face Detection
LiveView
Focus Points 1053 49
Lens Mount Canon RF

See Compatible Lenses
Canon EF-M

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 M100
Articulated LCD Fully articulated Tilting
Screen size 3.2” 3”
Screen dots 4150000 1040000
Touch screen Yes Yes
Screen type TFT LCD TFT LCD
Live view Yes Yes
Viewfinder Type Electronic No Viewfinder
Viewfinder Coverage 100%
Viewfinder Magnification 0.76×
Viewfinder Resolution 5760000 0
Photography features
Canon EOS R3
Canon EOS M100
Frames per second 30 fps 6,1 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 5 meters
External Flash Yes No
Self-Timer Yes Yes
Time-lapse Yes No
Metering modes Multi
Center Weighted
Spot
Partial
Multi
Center Weighted
Spot
Partial
Exposure Compensation +/- 3 (at 1/3 EV, 1/2 EV steps) +/- 3 (at 1/3 EV steps)
Videography features
Canon EOS R3
Canon EOS M100
Video recording Yes Yes
Video format MPEG4
H.264
H.265
MPEG4
H.264
Video resolution 1920 x 1080
3840 x 2160
4096 x 2160
1280 x 720
1920 x 1080
Built-in Microphone Yes Yes
Built-in Speakers Yes Yes
Storage
Canon EOS R3
Canon EOS M100
Memory Card Compact Flash Express
SD/SDHC
SD/SDHC
Connectivity
Canon EOS R3
Canon EOS M100
HDMI Output Yes Yes
Microphone Port Yes No
Headphone Port Yes No
Wireless Yes
Built-in (802.11ac + Bluetooth)
Yes
Built-in (802.11b/g/n + NFC + Bluetooth)
Remote Control Yes (via smartphone) Yes (via smartphone)
GPS Yes
Built-in
No
Body & Dimensions
Canon EOS R3
Canon EOS M100
Enviromentally sealed Yes No
Battery Built-in Battery Pack
Battery Details LP-E19 lithium-ion battery & charger
LP-E12 lithium-ion battery & charger
Battery Life (CIPA) 760 shots 295 shots
Width 150 mm 108 mm
Height 143 mm 67 mm
Depth 87 mm 35 mm
Weight 1015 gram 302 gram