Canon EOS R3 vs Nikon D5100

This is a full comparison between the cameras Canon EOS R3 and Nikon D5100. We compare them by looking at the categories you see below.


Canon EOS R3 is manufacturered by Canon but Nikon D5100 is from Nikon. Both Canon and Nikon are well known brands though.

Canon EOS R3 were released 2021 and Nikon D5100 was released 2011. That is a 10 years difference. In tech, this period can be of interest since technology is always improving, etc.

Camera Released
Canon EOS R3 2021
Nikon D5100 2011

Type of camera

Canon EOS R3 is a Mirrorless camera while Nikon D5100 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 Nikon D5100 has a "Nikon DX"-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
Nikon D5100 75 mm
Nikon DX sensor
Crop factor/focal length multiplier by * 1.5

** 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)
Camera selection can affect the focal length (Nikon)


Canon EOS R3 has a 24 MP (Megapixels) resolution while Nikon D5100 has 16,2 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
Nikon D5100 16,2 MP
16084992 pixels
4928 x 3264

Canon EOS R3 has a 49 % larger resolution than Nikon D5100. 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 Nikon D5100. Canon EOS R3 has an ISO range that stretches from 100 to 102400 while Nikon D5100 has 100 to 6400.

Camera ISO Range
Canon EOS R3 100-102400
Nikon D5100 100-6400

Autofocus and lens compatibility

There is a big difference between these two cameras. Canon EOS R3 has a built-in autofocus motor but Nikon D5100 does not. If you want to be able to use autofocus on Nikon D5100 there is a need for having an autofocus motor inside the lens. We really encourage you to look closely at our lens compatibility charts at the links below.

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 Nikon D5100

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 Nikon D5100 can shoot up to 4 pictures per seconds.

Camera FPS (Frames per second)
Canon EOS R3 30
Nikon D5100 4

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 Nikon D5100 can shoot movies.


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 66% heavier than Nikon D5100 and its 611 gr (or 1,35 lb).

Camera Weight
Canon EOS R3 1015 gr
2,24 lb
Nikon D5100 611 gr
1,35 lb

Canon EOS R3 vs Nikon D5100 Specs

Below you will find the complete and detailed technical specs for both Canon EOS R3 and Nikon D5100, 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.

Canon EOS R3
Nikon D5100
Name Canon EOS R3 Nikon D5100
Manufacturer Canon Nikon
Release Date and Price
Canon EOS R3
Nikon D5100
Release Year 2021 2011
Release Date 2021-04-14 2011-04-05
MSRP 5999 USD 359 USD
Buy it today
Camera Type
Canon EOS R3
Nikon D5100
Camera Type Mirrorless DSLR
Canon EOS R3
Nikon D5100
Sensor Size Full Frame (approx 36 x 24 mm) APS-C (approx 23.7 x 15.5 mm)
Also known as "DX"
Sensor Type Stacked CMOS CMOS
Resolution 6000 x 4000 pixels 4928 x 3264 pixels
Megapixels 24 MP 16,2 MP
Image Processor DIGIC X EXPEED 2
Canon EOS R3
Nikon D5100
ISO Range 100 - 102400 100 - 6400
White Balance Presets 6 12
Custom White Balance No Yes
Image Stabilization Yes
Image Stabilization CIPA Rating 0 stops 0 stops
Uncompressed format RAW RAW
Optics & Focus
Canon EOS R3
Nikon D5100
Autofocus Motor Yes No
Autofocus Contract Detect (sensor)
Phase Detect
Multi Area
Selective Single Point
Face Detection
Contract Detect (sensor)
Phase Detect
Multi Area
Selective Single Point
Face Detection
Focus Points 1053 11
Lens Mount Canon RF

See Compatible Lenses
Nikon F

See Compatible Lenses
Focal Length Multiplier Full frame
No multiplier
24 mm remains 24 mm
50 mm remains 50 mm
100 mm remains 100 mm
200 mm remains 200 mm
DX / APS-C (1.5x)
1.5x multiplier
24 mm becomes 36 mm
50 mm becomes 75 mm
100 mm becomes 150 mm
200 mm becomes 300 mm
Screen & Viewfinder
Canon EOS R3
Nikon D5100
Articulated LCD Fully articulated Fully articulated
Screen size 3.2 3#
Screen dots 4150000 921000
Touch screen Yes No
Screen type TFT LCD TFT LCD monitor
Live view Yes Yes
Viewfinder Type Electronic Optical (pentamirror)
Viewfinder Coverage 100% 95%
Viewfinder Magnification 0.76 0.78 (0.52 35mm equiv.)
Viewfinder Resolution 5760000 N/A
Photography features
Canon EOS R3
Nikon D5100
Frames per second 30 fps 4 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
Center Weighted
Exposure Compensation 3 (at 1/3 EV, 1/2 EV steps) 5 (at 1/3 EV, 1/2 EV steps)
Videography features
Canon EOS R3
Nikon D5100
Video recording Yes Yes
Video format MPEG4
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
Canon EOS R3
Nikon D5100
Memory Card Compact Flash Express
Canon EOS R3
Nikon D5100
HDMI Output Yes Yes
Microphone Port Yes Yes
Headphone Port Yes No
Wireless Yes
Built-in (802.11ac + Bluetooth)
Eye-Fi Connected
Remote Control Yes (via smartphone) Yes (Optional ML-L3)
Optional with GP-1
Body & Dimensions
Canon EOS R3
Nikon D5100
Enviromentally sealed Yes No
Battery Built-in Battery Pack
Battery Details LP-E19 lithium-ion battery & charger
Lithium-Ion EN-EL14 rechargeable battery & charger
Battery Life (CIPA) 760 shots N/A
Width 150 mm 128 mm
Height 143 mm 97 mm
Depth 87 mm 79 mm
Weight 1015 gram 611 gram