Olympus E-PM2 vs Sony A77
89 Imaging
52 Features
63 Overall
56
59 Imaging
62 Features
83 Overall
70
Olympus E-PM2 vs Sony A77 Key Specs
(Full Review)
- 16MP - Four Thirds Sensor
- 3" Fixed Display
- ISO 200 - 25600
- Sensor based Image Stabilization
- 1920 x 1080 video
- Micro Four Thirds Mount
- 269g - 110 x 64 x 34mm
- Launched May 2013
- Succeeded the Olympus E-PM1
(Full Review)
- 24MP - APS-C Sensor
- 3" Fully Articulated Screen
- ISO 50 - 16000 (Boost to 25600)
- Sensor based Image Stabilization
- 1/8000s Maximum Shutter
- 1920 x 1080 video
- Sony/Minolta Alpha Mount
- 732g - 143 x 104 x 81mm
- Introduced October 2011
- Older Model is Sony A700
- Refreshed by Sony A77 II
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Here is a comprehensive overview of the Olympus E-PM2 vs Sony A77, former being a Entry-Level Mirrorless while the latter is a Advanced DSLR by brands Olympus and Sony. There exists a large gap between the sensor resolutions of the E-PM2 (16MP) and A77 (24MP) and the E-PM2 (Four Thirds) and A77 (APS-C) enjoy different sensor dimensions.
Photobucket discusses licensing 13 billion images with AI firmsThe E-PM2 was revealed 20 months later than the A77 which makes the cameras a generation apart from one another. The two cameras come with different body type with the Olympus E-PM2 being a Rangefinder-style mirrorless camera and the Sony A77 being a Mid-size SLR camera.
Before we go in to a full comparison, below is a short view of how the E-PM2 scores vs the A77 with respect to portability, imaging, features and an overall rating.
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The following is a preview of the gallery photos for Olympus PEN E-PM2 & Sony SLT-A77. The full galleries are viewable at Olympus E-PM2 Gallery & Sony A77 Gallery.
Reasons to pick Olympus E-PM2 over the Sony A77
| E-PM2 | A77 | |||
|---|---|---|---|---|
| Introduced | May 2013 | October 2011 | Fresher by 20 months | |
| Touch screen | Quickly navigate |
Reasons to pick Sony A77 over the Olympus E-PM2
| A77 | E-PM2 | |||
|---|---|---|---|---|
| Screen type | Fully Articulated | Fixed | Fully Articulating screen | |
| Screen resolution | 921k | 460k | Sharper screen (+461k dot) | |
| Selfie screen | Easy selfies |
Common features in the Olympus E-PM2 and Sony A77
| E-PM2 | A77 | |||
|---|---|---|---|---|
| Manually focus | Very accurate focus | |||
| Screen dimension | 3" | 3" | Identical screen sizing |
Olympus E-PM2 vs Sony A77 Physical Comparison
For those who are aiming to carry your camera regularly, you have to factor in its weight and volume. The Olympus E-PM2 comes with physical measurements of 110mm x 64mm x 34mm (4.3" x 2.5" x 1.3") accompanied by a weight of 269 grams (0.59 lbs) whilst the Sony A77 has sizing of 143mm x 104mm x 81mm (5.6" x 4.1" x 3.2") with a weight of 732 grams (1.61 lbs).
Analyze the Olympus E-PM2 vs Sony A77 in our brand new Camera plus Lens Size Comparison Tool.
Keep in mind, the weight of an ILC will differ based on the lens you have during that time. Here is the front view measurement comparison of the E-PM2 vs the A77.

Looking at dimensions and weight, the portability grade of the E-PM2 and A77 is 89 and 59 respectively.
Olympus E-PM2 vs Sony A77 Sensor Comparison
Normally, it's tough to imagine the difference between sensor sizing simply by going over technical specs. The visual here will help provide you a clearer sense of the sensor sizing in the E-PM2 and A77.
As you can tell, both of those cameras have got different resolutions and different sensor sizing. The E-PM2 having a tinier sensor is going to make achieving shallow depth of field more challenging and the Sony A77 will offer extra detail because of its extra 8MP. Higher resolution will allow you to crop shots much more aggressively. The more modern E-PM2 provides an advantage with regard to sensor tech.
Olympus E-PM2 vs Sony A77 Screen and ViewFinder
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Olympus E-PM2 vs Sony A77 Specifications
| Olympus PEN E-PM2 | Sony SLT-A77 | |
|---|---|---|
| General Information | ||
| Manufacturer | Olympus | Sony |
| Model | Olympus PEN E-PM2 | Sony SLT-A77 |
| Class | Entry-Level Mirrorless | Advanced DSLR |
| Launched | 2013-05-21 | 2011-10-25 |
| Physical type | Rangefinder-style mirrorless | Mid-size SLR |
| Sensor Information | ||
| Powered by | - | Bionz |
| Sensor type | CMOS | CMOS |
| Sensor size | Four Thirds | APS-C |
| Sensor measurements | 17.3 x 13mm | 23.5 x 15.6mm |
| Sensor surface area | 224.9mm² | 366.6mm² |
| Sensor resolution | 16 megapixel | 24 megapixel |
| Anti aliasing filter | ||
| Aspect ratio | 4:3 | 3:2 and 16:9 |
| Full resolution | 4608 x 3456 | 6000 x 4000 |
| Max native ISO | 25600 | 16000 |
| Max boosted ISO | - | 25600 |
| Lowest native ISO | 200 | 50 |
| RAW pictures | ||
| Autofocusing | ||
| Focus manually | ||
| Autofocus touch | ||
| Autofocus continuous | ||
| Single autofocus | ||
| Autofocus tracking | ||
| Selective autofocus | ||
| Center weighted autofocus | ||
| Multi area autofocus | ||
| Autofocus live view | ||
| Face detect autofocus | ||
| Contract detect autofocus | ||
| Phase detect autofocus | ||
| Number of focus points | 35 | 19 |
| Cross focus points | - | 11 |
| Lens | ||
| Lens mount | Micro Four Thirds | Sony/Minolta Alpha |
| Number of lenses | 107 | 143 |
| Focal length multiplier | 2.1 | 1.5 |
| Screen | ||
| Display type | Fixed Type | Fully Articulated |
| Display diagonal | 3 inch | 3 inch |
| Resolution of display | 460k dots | 921k dots |
| Selfie friendly | ||
| Liveview | ||
| Touch friendly | ||
| Viewfinder Information | ||
| Viewfinder | Electronic (optional) | Electronic |
| Viewfinder resolution | - | 2,359k dots |
| Viewfinder coverage | - | 100 percent |
| Viewfinder magnification | - | 0.73x |
| Features | ||
| Lowest shutter speed | 60 secs | 30 secs |
| Highest shutter speed | 1/4000 secs | 1/8000 secs |
| Continuous shooting rate | 8.0fps | 12.0fps |
| Shutter priority | ||
| Aperture priority | ||
| Expose Manually | ||
| Exposure compensation | Yes | Yes |
| Set white balance | ||
| Image stabilization | ||
| Integrated flash | ||
| Flash range | 7.00 m (bundled FL-LM1) | 12.00 m |
| Flash options | Auto, On, Off, Red-Eye, Fill-in, Slow Sync, Manual (3 levels) | Auto, On, Off, Red-Eye, Slow Sync, High Speed Sync, Rear Curtain, Fill-in, Wireless |
| Hot shoe | ||
| Auto exposure bracketing | ||
| White balance bracketing | ||
| Highest flash synchronize | 1/250 secs | 1/250 secs |
| Exposure | ||
| Multisegment | ||
| Average | ||
| Spot | ||
| Partial | ||
| AF area | ||
| Center weighted | ||
| Video features | ||
| Video resolutions | 1920 x 1080 (30 fps), 1280 x 720 (30 fps), 640 x 480 (30 fps) | 1920 x 1080 (60, 24 fps), 1440 x 1080 (30fps), 640 x 424 (29.97 fps) |
| Max video resolution | 1920x1080 | 1920x1080 |
| Video format | MPEG-4, H.264, Motion JPEG | MPEG-4, AVCHD, H.264 |
| Microphone support | ||
| Headphone support | ||
| 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 | ||
| Environmental sealing | ||
| Water proof | ||
| Dust proof | ||
| Shock proof | ||
| Crush proof | ||
| Freeze proof | ||
| Weight | 269g (0.59 lb) | 732g (1.61 lb) |
| Dimensions | 110 x 64 x 34mm (4.3" x 2.5" x 1.3") | 143 x 104 x 81mm (5.6" x 4.1" x 3.2") |
| DXO scores | ||
| DXO All around score | 72 | 78 |
| DXO Color Depth score | 22.7 | 24.0 |
| DXO Dynamic range score | 12.2 | 13.2 |
| DXO Low light score | 932 | 801 |
| Other | ||
| Battery life | 360 images | 470 images |
| Battery style | Battery Pack | Battery Pack |
| Battery model | BLS-5 | NP-FM500H |
| Self timer | Yes (2 or 12 sec) | Yes (2 or 10 sec) |
| Time lapse feature | ||
| Type of storage | SD/SDHC/SDXC | SD/SDHC/SDXC/Memory Stick Pro Duo/ Pro-HG Duo |
| Card slots | 1 | 1 |
| Cost at launch | $448 | $900 |