Sony Alpha a9 vs Canon EOS 550D

This is a full comparison between the cameras Sony Alpha a9 and Canon EOS 550D. We compare them by looking at the categories you see below.


Sony Alpha a9 is manufacturered by Sony but Canon EOS 550D is from Canon. Both Sony and Canon are well known brands though.

Sony Alpha a9 were released 2017 and Canon EOS 550D was released 2010. That is a 7 years difference. In tech, this period can be of interest since technology is always improving, etc.

Camera Released
Sony Alpha a9 2017
Canon EOS 550D 2010

Type of camera

Sony Alpha a9 is a Mirrorless camera while Canon EOS 550D is a DSLR camera. More information about their differences will come soon.

Sensors / crop factor

These cameras have different sensors. Sony Alpha a9 has a "Sony Full Frame"-sensor while Canon EOS 550D 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 **
Sony Alpha a9 50 mm
Full-frame sensor
No crop factor/focal length multiplier
Canon EOS 550D 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 (Sony)
Camera selection can affect the focal length (Canon)


Sony Alpha a9 has a 24 MP (Megapixels) resolution while Canon EOS 550D has 18,7 MP. If we break down this in more detail this is the data behind the numbers:

Camera Megapixels
Sony Alpha a9 24 MP
24000000 pixels
6000 x 4000
Canon EOS 550D 18,7 MP
17915904 pixels
5184 x 3456

Sony Alpha a9 has a 34 % larger resolution than Canon EOS 550D. 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

Sony Alpha a9 has a larger ISO-range than Canon EOS 550D. Sony Alpha a9 has an ISO range that stretches from 100 to 51200 while Canon EOS 550D has 100 to 12800.

Camera ISO Range
Sony Alpha a9 100-51200
Canon EOS 550D 100-12800

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 Sony Alpha a9
Lens compatibility chart for Canon EOS 550D

Pictures per second

Depending on what you are shooting the FPS, or frames/pictures per second, can definitely be of interest. Sony Alpha a9 can shoot up to 20 pictures per seconds and Canon EOS 550D can shoot up to 3,7 pictures per seconds.

Camera FPS (Frames per second)
Sony Alpha a9 20
Canon EOS 550D 3,7

Ability to record movies

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

In this case, both Sony Alpha a9 and Canon EOS 550D 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.

Sony Alpha a9 weighs 673 gr (equal to 1.48 lb) which is 32% heavier than Canon EOS 550D and its 510 gr (or 1.12 lb).

Camera Weight
Sony Alpha a9 673 gr
1.48 lb
Canon EOS 550D 510 gr
1.12 lb

Sony Alpha a9 vs Canon EOS 550D Specs

Below you will find the complete and detailed technical specs for both Sony Alpha a9 and Canon EOS 550D, 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.

Sony Alpha a9
Canon EOS 550D
Name Sony Alpha a9 Canon EOS 550D
Manufacturer Sony Canon
Release Date and Price
Sony Alpha a9
Canon EOS 550D
Release Year 2017 2010
Release Date 2017-04-19 2010-02-08
MSRP 4499 USD 899 USD
Buy it today
Camera Type
Sony Alpha a9
Canon EOS 550D
Camera Type Mirrorless DSLR
Sony Alpha a9
Canon EOS 550D
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 5184 x 3456 pixels
Megapixels 24 MP 18,7 MP
Image Processor Bionz X DIGIC 4
Sony Alpha a9
Canon EOS 550D
ISO Range 100 - 51200 100 - 12800
White Balance Presets 10 6
Custom White Balance Yes Yes
Image Stabilization Yes
(Sensor-Shift (5-axis))
Image Stabilization CIPA Rating 0 stops 0 stops
Uncompressed format RAW RAW
Optics & Focus
Sony Alpha a9
Canon EOS 550D
Autofocus Motor Yes Yes
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 693 9
Lens Mount Sony E

See Compatible Lenses
Canon EF
Canon EF-S

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
APS-C Sensor
1.6x multiplier
24 mm becomes 38 mm
50 mm becomes 80 mm
100 mm becomes 160 mm
200 mm becomes 320 mm
Screen & Viewfinder
Sony Alpha a9
Canon EOS 550D
Articulated LCD Tilting Fixed
Screen size 3 3
Screen dots 1440000 1040000
Touch screen Yes No
Screen type TFT LCD TFT color liquid-crystal LCD
Live view Yes Yes
Viewfinder Type Electronic Optical (pentamirror)
Viewfinder Coverage 100% 95%
Viewfinder Magnification 0.78x 0.87 (0.54 35mm equiv.)
Viewfinder Resolution 3686400 N/A
Photography features
Sony Alpha a9
Canon EOS 550D
Frames per second 20 fps 3,7 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 13 meters
External Flash Yes Yes
Self-Timer Yes Yes
Time-lapse No Yes
Metering modes Multi
Center Weighted
Highlight Weighted
Center Weighted
Exposure Compensation +/- 5 (at 1/3 EV, 1/2 EV steps) +/- 5 (at 1/3 EV, 1/2 EV steps)
Videography features
Sony Alpha a9
Canon EOS 550D
Video recording Yes Yes
Video format MPEG4
Video resolution 1280 x 720
1920 x 1080
3840 x 2160
1280 x 720
1920 x 1080
Built-in Microphone Yes Yes
Built-in Speakers Yes No
Sony Alpha a9
Canon EOS 550D
Memory Card SD/SDHC
Sony Alpha a9
Canon EOS 550D
HDMI Output Yes Yes
Microphone Port Yes No
Headphone Port Yes No
Wireless Yes
Built-in (802.11/b/g/n with NFC)
Eye-Fi Connected
Remote Control Yes (Wired or wireless) Yes (E3 connector, InfraRed)
Body & Dimensions
Sony Alpha a9
Canon EOS 550D
Enviromentally sealed Yes No
Battery Battery Pack Battery Pack
Battery Details NP-FZ100
Lithium-Ion LP-E8 rechargeable battery & charger
Battery Life (CIPA) 650 shots N/A
Width 127 mm 129 mm
Height 96 mm 98 mm
Depth 63 mm 62 mm
Weight 673 gram 510 gram