Canon EOS R7 vs Nikon D3100

This is a full comparison between the cameras Canon EOS R7 and Nikon D3100. We compare them by looking at the categories you see below.

Manufacturing

Canon EOS R7 is manufacturered by Canon but Nikon D3100 is from Nikon. Both Canon and Nikon are well known brands though.

Canon EOS R7 were released 2022 and Nikon D3100 was released 2010. That is a 12 years difference. In tech, this period can be of interest since technology is always improving, etc.

Camera Released
Canon EOS R7 2022
Nikon D3100 2010

Type of camera

Canon EOS R7 is a Mirrorless camera while Nikon D3100 is a DSLR camera. More information about their differences will come soon.

Sensors / crop factor

These cameras have different sensors. Canon EOS R7 has a "Canon APS-C"-sensor while Nikon D3100 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 R7 80 mm
Canon APS-C sensor
Crop factor/focal length multiplier by * 1.6
Nikon D3100 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)

Resolution

Canon EOS R7 has a 33 MP (Megapixels) resolution while Nikon D3100 has 14,2 MP. If we break down this in more detail this is the data behind the numbers:

Camera Megapixels
Canon EOS R7 33 MP
32294400 pixels
6960 x 4640
Nikon D3100 14,2 MP
14155776 pixels
4608 x 3072

Canon EOS R7 has a 128 % larger resolution than Nikon D3100. 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 R7 has a larger ISO-range than Nikon D3100. Canon EOS R7 has an ISO range that stretches from 100 to 32000 while Nikon D3100 has 100 to 12800.

Camera ISO Range
Canon EOS R7 100-32000
Nikon D3100 100-12800

Autofocus and lens compatibility

There is a big difference between these two cameras. Canon EOS R7 has a built-in autofocus motor but Nikon D3100 does not. If you want to be able to use autofocus on Nikon D3100 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 R7 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 R7
Lens compatibility chart for Nikon D3100

Pictures per second

Depending on what you are shooting the FPS, or frames/pictures per second, can definitely be of interest. Canon EOS R7 can shoot up to 15 pictures per seconds and Nikon D3100 can shoot up to 3 pictures per seconds.

Camera FPS (Frames per second)
Canon EOS R7 15
Nikon D3100 3

Ability to record movies

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

In this case, both Canon EOS R7 and Nikon D3100 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 R7 weighs 612 gr (equal to 1.35 lb) which is 21% heavier than Nikon D3100 and its 505 gr (or 1.11 lb).

Camera Weight
Canon EOS R7 612 gr
1.35 lb
Nikon D3100 505 gr
1.11 lb

Canon EOS R7 vs Nikon D3100 Specs

Below you will find the complete and detailed technical specs for both Canon EOS R7 and Nikon D3100, 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 R7
Nikon D3100
Name Canon EOS R7 Nikon D3100
Manufacturer Canon Nikon
Release Date and Price
Canon EOS R7
Nikon D3100
Release Year 2022 2010
Release Date 2022-05-24 2010-08-19
MSRP 1499 USD 699 USD
Buy it today
Camera Type
Canon EOS R7
Nikon D3100
Camera Type Mirrorless DSLR
Sensor
Canon EOS R7
Nikon D3100
Sensor Size APS-C (approx 22.3 x 14.9 mm) APS-C (approx 23.7 x 15.5 mm)
Also known as "DX"
Sensor Type CMOS CMOS
Resolution 6960 x 4640 pixels 4608 x 3072 pixels
Megapixels 33 MP 14,2 MP
Image Processor DIGIC X EXPEED 2
Image
Canon EOS R7
Nikon D3100
ISO Range 100 - 32000 100 - 12800
White Balance Presets 6 12
Custom White Balance Yes Yes
Image Stabilization Yes
(Sensor-Shift)
No
Image Stabilization CIPA Rating 0 stops 0 stops
Uncompressed format RAW RAW
Optics & Focus
Canon EOS R7
Nikon D3100
Autofocus Motor Yes No
Autofocus Phase Detect
Multi Area
Center
Selective Single Point
Tracking
Single
Continuous
Touch
Face Detection
LiveView
Contract Detect (sensor)
Phase Detect
Multi Area
Selective Single Point
Tracking
Single
Continuous
Face Detection
LiveView
Focus Points 651 11
Lens Mount Canon RF

See Compatible Lenses
Nikon F

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
DX / APS-C (1.5x)
1.5x multiplier
Example:
24 mm becomes 36 mm
50 mm becomes 75 mm
100 mm becomes 150 mm
200 mm becomes 300 mm
Screen & Viewfinder
Canon EOS R7
Nikon D3100
Articulated LCD Fully articulated Fixed
Screen size 3” 3”
Screen dots N/A 230000
Touch screen Yes No
Screen type N/A TFT LCD monitor
Live view Yes Yes
Viewfinder Type Electronic Optical (pentamirror)
Viewfinder Coverage 100% 95%
Viewfinder Magnification 1.15× 0.8× (0.53× 35mm equiv.)
Viewfinder Resolution 2360000 N/A
Photography features
Canon EOS R7
Nikon D3100
Frames per second 15 fps 3 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 No No
Metering modes Multi
Center Weighted
Spot
Partial
Multi
Center Weighted
Average
Exposure Compensation +/- 3 (at 1/3 EV, 1/2 EV steps) +/- 5 (at 1/3 EV steps)
Videography features
Canon EOS R7
Nikon D3100
Video recording Yes Yes
Video format MPEG4
H.264
H.265
MPEG4
Video resolution 1920 x 1080
3840 x 2160
1280 x 720
1920 x 1080
Built-in Microphone Yes Yes
Built-in Speakers Yes No
Storage
Canon EOS R7
Nikon D3100
Memory Card SD/SDHC
SD/SDHC
Connectivity
Canon EOS R7
Nikon D3100
HDMI Output Yes Yes
Microphone Port Yes No
Headphone Port Yes No
Wireless Yes
Built-in (Wireless LAN (IEEE802.11b/g/n) (2.4 GHz), with Bluetooth 4.2)
Yes
Eye-Fi Connected
Remote Control Yes (Wired, wireless or IR)
Optional
GPS Yes
Optional via GPS Receiver GP-E2
Yes
Optional
Body & Dimensions
Canon EOS R7
Nikon D3100
Enviromentally sealed Yes No
Battery Battery Pack Battery Pack
Battery Details Rechargeable Li-ion Battery LP-E6NH
Lithium-Ion EN-EL14 rechargeable battery & charger
Battery Life (CIPA) 660 shots N/A
Width 132 mm 124 mm
Height 90 mm 96 mm
Depth 92 mm 75 mm
Weight 612 gram 505 gram