Olympus E-M5 vs Sony A55
81 Imaging
51 Features
70 Overall
58


67 Imaging
55 Features
80 Overall
65
Olympus E-M5 vs Sony A55 Key Specs
(Full Review)
- 16MP - Four Thirds Sensor
- 3" Tilting Display
- ISO 200 - 25600
- Sensor based 5-axis Image Stabilization
- 1920 x 1080 video
- Micro Four Thirds Mount
- 425g - 122 x 89 x 43mm
- Released April 2012
- Newer Model is Olympus E-M5 II
(Full Review)
- 16MP - APS-C Sensor
- 3" Fully Articulated Screen
- ISO 100 - 12800 (Push to 25600)
- Sensor based Image Stabilization
- 1920 x 1080 video
- Sony/Minolta Alpha Mount
- 500g - 124 x 92 x 85mm
- Released August 2010
- Renewed by Sony A57

Olympus E-M5 vs Sony A55 Overview
The following is a thorough overview of the Olympus E-M5 vs Sony A55, one is a Advanced Mirrorless and the latter is a Entry-Level DSLR by brands Olympus and Sony. The image resolution of the E-M5 (16MP) and the A55 (16MP) is relatively close but the E-M5 (Four Thirds) and A55 (APS-C) use totally different sensor size.

The E-M5 was brought out 21 months after the A55 which makes the cameras a generation away from one another. Both cameras come with different body type with the Olympus E-M5 being a SLR-style mirrorless camera and the Sony A55 being a Compact SLR camera.
Before we go straight into a in-depth comparison, below is a short synopsis of how the E-M5 matches up versus the A55 when it comes to portability, imaging, features and an overall mark.

Olympus E-M5 vs Sony A55 Gallery
This is a preview of the gallery photos for Olympus OM-D E-M5 and Sony SLT-A55. The entire galleries are provided at Olympus E-M5 Gallery and Sony A55 Gallery.
Reasons to pick Olympus E-M5 over the Sony A55
E-M5 | A55 | |||
---|---|---|---|---|
Released | April 2012 | ![]() | August 2010 | Newer by 21 months |
Touch friendly screen | ![]() | Quickly navigate |
Reasons to pick Sony A55 over the Olympus E-M5
A55 | E-M5 | |||
---|---|---|---|---|
Screen type | Fully Articulated | ![]() | Tilting | Fully Articulating screen |
Screen resolution | 921k | ![]() | 610k | Clearer screen (+311k dot) |
Selfie screen | ![]() | Easy selfies |
Common features in the Olympus E-M5 and Sony A55
E-M5 | A55 | |||
---|---|---|---|---|
Focus manually | ![]() | Very exact focusing | ||
Screen dimension | 3" | ![]() | 3" | Identical screen size |
Olympus E-M5 vs Sony A55 Physical Comparison
For anybody who is aiming to travel with your camera regularly, you have to consider its weight and volume. The Olympus E-M5 provides outer measurements of 122mm x 89mm x 43mm (4.8" x 3.5" x 1.7") having a weight of 425 grams (0.94 lbs) and the Sony A55 has sizing of 124mm x 92mm x 85mm (4.9" x 3.6" x 3.3") with a weight of 500 grams (1.10 lbs).
Compare the Olympus E-M5 vs Sony A55 in the new Camera and Lens Size Comparison Tool.
Keep in mind, the weight of an Interchangeable Lens Camera will differ based on the lens you have attached at that moment. Underneath is the front view physical size comparison of the E-M5 and the A55.

Taking into account dimensions and weight, the portability score of the E-M5 and A55 is 81 and 67 respectively.

Olympus E-M5 vs Sony A55 Sensor Comparison
Quite often, it's difficult to visualise the contrast in sensor dimensions only by researching specs. The pic underneath should offer you a greater sense of the sensor measurements in the E-M5 and A55.
As you can plainly see, each of these cameras posses the exact same megapixels albeit not the same sensor dimensions. The E-M5 uses the smaller sensor which should make achieving shallow DOF more challenging. The younger E-M5 is going to have an edge in sensor technology.

Olympus E-M5 vs Sony A55 Screen and ViewFinder


Photography Type Scores
Portrait Comparison

Street Comparison

Sports Comparison

Travel Comparison

Landscape Comparison

Vlogging Comparison

Olympus E-M5 vs Sony A55 Specifications
Olympus OM-D E-M5 | Sony SLT-A55 | |
---|---|---|
General Information | ||
Brand | Olympus | Sony |
Model | Olympus OM-D E-M5 | Sony SLT-A55 |
Type | Advanced Mirrorless | Entry-Level DSLR |
Released | 2012-04-30 | 2010-08-24 |
Body design | SLR-style mirrorless | Compact SLR |
Sensor Information | ||
Chip | TruePic VI | Bionz |
Sensor type | CMOS | CMOS |
Sensor size | Four Thirds | APS-C |
Sensor measurements | 17.3 x 13mm | 23.5 x 15.6mm |
Sensor area | 224.9mm² | 366.6mm² |
Sensor resolution | 16 megapixel | 16 megapixel |
Anti aliasing filter | ||
Aspect ratio | 1:1, 4:3, 3:2 and 16:9 | 3:2 and 16:9 |
Peak resolution | 4608 x 3456 | 4912 x 3264 |
Highest native ISO | 25600 | 12800 |
Highest enhanced ISO | - | 25600 |
Lowest native ISO | 200 | 100 |
RAW images | ||
Lowest enhanced ISO | 100 | - |
Autofocusing | ||
Manual focus | ||
Touch to focus | ||
Continuous AF | ||
AF single | ||
Tracking AF | ||
Selective AF | ||
Center weighted AF | ||
AF multi area | ||
AF live view | ||
Face detect focusing | ||
Contract detect focusing | ||
Phase detect focusing | ||
Number of focus points | 35 | 15 |
Cross focus points | - | 3 |
Lens | ||
Lens mount | Micro Four Thirds | Sony/Minolta Alpha |
Amount of lenses | 107 | 143 |
Crop factor | 2.1 | 1.5 |
Screen | ||
Display type | Tilting | Fully Articulated |
Display sizing | 3 inches | 3 inches |
Display resolution | 610 thousand dot | 921 thousand dot |
Selfie friendly | ||
Liveview | ||
Touch screen | ||
Display tech | Touch control in electrostatic capacitance type OLED monitor | - |
Viewfinder Information | ||
Viewfinder type | Electronic | Electronic |
Viewfinder resolution | 1,440 thousand dot | 1,150 thousand dot |
Viewfinder coverage | 100% | 100% |
Viewfinder magnification | 0.58x | 0.73x |
Features | ||
Minimum shutter speed | 60s | 30s |
Fastest shutter speed | 1/4000s | 1/4000s |
Continuous shutter speed | 9.0 frames per sec | 10.0 frames per sec |
Shutter priority | ||
Aperture priority | ||
Manually set exposure | ||
Exposure compensation | Yes | Yes |
Set WB | ||
Image stabilization | ||
Integrated flash | ||
Flash range | no built-in flash | 10.00 m (@ ISO 100) |
Flash settings | Auto, On, Off, Red-Eye, Fill-in, Slow Sync (2), Manual (3 levels) | Auto, On, Off, Red-Eye, Slow Sync, High Speed Sync, Rear Curtain, Fill-in, Wireless |
External flash | ||
Auto exposure bracketing | ||
White balance bracketing | ||
Fastest flash sync | 1/250s | 1/160s |
Exposure | ||
Multisegment metering | ||
Average metering | ||
Spot metering | ||
Partial metering | ||
AF area metering | ||
Center weighted metering | ||
Video features | ||
Video resolutions | 1920 x 1080 (60 fps), 1280 x 720 (60, 30 fps), 640 x 480 (30 fps) | 1920 x 1080 (60, 29.97 fps), 1440 x 1080 (30fps), 640 x 424 (29.97 fps) |
Highest video resolution | 1920x1080 | 1920x1080 |
Video data format | H.264, Motion JPEG | MPEG-4, AVCHD, H.264 |
Microphone jack | ||
Headphone jack | ||
Connectivity | ||
Wireless | Eye-Fi Connected | Eye-Fi Connected |
Bluetooth | ||
NFC | ||
HDMI | ||
USB | USB 2.0 (480 Mbit/sec) | USB 2.0 (480 Mbit/sec) |
GPS | None | BuiltIn |
Physical | ||
Environment seal | ||
Water proof | ||
Dust proof | ||
Shock proof | ||
Crush proof | ||
Freeze proof | ||
Weight | 425 gr (0.94 lbs) | 500 gr (1.10 lbs) |
Dimensions | 122 x 89 x 43mm (4.8" x 3.5" x 1.7") | 124 x 92 x 85mm (4.9" x 3.6" x 3.3") |
DXO scores | ||
DXO Overall score | 71 | 73 |
DXO Color Depth score | 22.8 | 23.0 |
DXO Dynamic range score | 12.3 | 12.4 |
DXO Low light score | 826 | 816 |
Other | ||
Battery life | 360 shots | 380 shots |
Style of battery | Battery Pack | Battery Pack |
Battery model | BLN-1 | NP-FW50 |
Self timer | Yes (2 or 12 sec) | Yes (2 or 10 sec) |
Time lapse shooting | ||
Type of storage | SD/SDHC/SDXC | SD/SDHC/SDXC/Memory Stick Pro Duo/ Pro-HG Duo |
Storage slots | One | One |
Retail pricing | $799 | $800 |