Sony a57 vs Canon EOS RP

This is a full comparison between the cameras Sony a57 and Canon EOS RP. We compare them by looking at the categories you see below.

Manufacturing

Sony a57 is manufacturered by Sony but Canon EOS RP is from Canon. Both Sony and Canon are well known brands though.

Sony a57 were released 2012 and Canon EOS RP was released 2019. That is a 7 years difference. In tech, this period can be of interest since technology is always improving, etc.

Camera Released
Sony a57 2012
Canon EOS RP 2019

Type of camera

Sensors / crop factor

These cameras have different sensors. Sony a57 has a "Sony APS-C"-sensor while Canon EOS RP has a "Canon Full Frame"-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 a57 75 mm
Sony APS-C sensor
Crop factor/focal length multiplier by * 1.5
Canon EOS RP 50 mm
Full-frame sensor
No crop factor/focal length multiplier

** 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)

Resolution

Sony a57 has a 16 MP (Megapixels) resolution while Canon EOS RP has 26 MP. If we break down this in more detail this is the data behind the numbers:

Camera Megapixels
Sony a57 16 MP
16032768 pixels
4912 x 3264
Canon EOS RP 26 MP
25958400 pixels
6240 x 4160

Canon EOS RP has a 62 % larger resolution than Sony a57. 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 RP has a larger ISO-range than Sony a57. Canon EOS RP has an ISO range that stretches from 100 to 40000 while Sony a57 has 100 to 16000.

Camera ISO Range
Sony a57 100-16000
Canon EOS RP 100-40000

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 RP 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 Sony a57
Lens compatibility chart for Canon EOS RP

Pictures per second

Depending on what you are shooting the FPS, or frames/pictures per second, can definitely be of interest. Sony a57 can shoot up to 12 pictures per seconds and Canon EOS RP can shoot up to 5 pictures per seconds.

Camera FPS (Frames per second)
Sony a57 12
Canon EOS RP 5

Ability to record movies

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

In this case, both Sony a57 and Canon EOS RP 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.

Sony a57 weighs 618 gr (equal to 1.36 lb) which is 27% heavier than Canon EOS RP and its 485 gr (or 1.07 lb).

Camera Weight
Sony a57 618 gr
1.36 lb
Canon EOS RP 485 gr
1.07 lb

Sony a57 vs Canon EOS RP Specs

Below you will find the complete and detailed technical specs for both Sony a57 and Canon EOS RP, 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
Sony a57
Canon EOS RP
Name Sony a57 Canon EOS RP
Manufacturer Sony Canon
Release Date and Price
Sony a57
Canon EOS RP
Release Year 2012 2019
Release Date 2012-03-13 2019-02-14
MSRP 699 USD 1299 USD
Buy it today
Camera Type
Sony a57
Canon EOS RP
Camera Type SLT Mirrorless
Sensor
Sony a57
Canon EOS RP
Sensor Size APS-C (approx 23.5 x 15.6 mm) Full Frame (approx 36 x 24 mm)
Sensor Type CMOS CMOS
Resolution 4912 x 3264 pixels 6240 x 4160 pixels
Megapixels 16 MP 26 MP
Image Processor Bionz DIGIC 8
Image
Sony a57
Canon EOS RP
ISO Range 100 - 16000 100 - 40000
White Balance Presets 9 6
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
Sony a57
Canon EOS RP
Autofocus Motor Yes Yes
Autofocus Phase Detect
Multi Area
Selective Single Point
Tracking
Single
Continuous
Face Detection
LiveView
Contract Detect (sensor)
Phase Detect
Multi Area
Center
Selective Single Point
Tracking
Single
Continuous
Touch
Face Detection
LiveView
Focus Points 15 4779
Lens Mount Sony A

See Compatible Lenses
Canon RF

See Compatible Lenses
Focal Length Multiplier APS-C Sensor (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
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
Screen & Viewfinder
Sony a57
Canon EOS RP
Articulated LCD Fully articulated Fully articulated
Screen size 3” 3”
Screen dots 921000 1040000
Touch screen No Yes
Screen type Xtra Fine TFT drive with TruBlack technology TFT LCD
Live view Yes Yes
Viewfinder Type Electronic Electronic
Viewfinder Coverage 100% 100%
Viewfinder Magnification 1.04× (0.69× 35mm equiv.) 0.7×
Viewfinder Resolution N/A 2360000
Photography features
Sony a57
Canon EOS RP
Frames per second 12 fps 5 fps
Minimum Shutter Speed 30 seconds 30 seconds
Maximum Shutter Speed 1/4000 seconds 1/4000 seconds
Built-in Flash Yes No
Built-in Flash Range 10 meters N/A
External Flash Yes Yes
Self-Timer Yes Yes
Time-lapse No Yes
Metering modes Multi
Center Weighted
Spot
Multi
Center Weighted
Spot
Partial
Exposure Compensation +/- 3 (at 1/3 EV steps) +/- 3 (at 1/3 EV, 1/2 EV steps)
Videography features
Sony a57
Canon EOS RP
Video recording Yes Yes
Video format MPEG4
H.264
AVCHD
MPEG4
H.264
Video resolution 1440 x 1080
1920 x 1080
1920 x 1080
3840 x 2160
Built-in Microphone Yes Yes
Built-in Speakers Yes Yes
Storage
Sony a57
Canon EOS RP
Memory Card Memory Stick Pro Duo
SD/SDHC
SD/SDHC
Connectivity
Sony a57
Canon EOS RP
HDMI Output Yes Yes
Microphone Port No Yes
Headphone Port No Yes
Wireless Yes
Eye-Fi Connected
Yes
Built-in (802.11b/g/n + Bluetooth)
Remote Control Yes (Optional) Yes (via cable or smartphone)
GPS No No
Body & Dimensions
Sony a57
Canon EOS RP
Enviromentally sealed No No
Battery Battery Pack Battery Pack
Battery Details Rechargeable NP-FM500H battery & charger
LP-E17 lithium-ion battery & charger
Battery Life (CIPA) 550 shots 250 shots
Width 132 mm 133 mm
Height 98 mm 85 mm
Depth 81 mm 70 mm
Weight 618 gram 485 gram