Olympus E-420 vs Sony A77
77 Imaging
44 Features
36 Overall
40


59 Imaging
63 Features
83 Overall
71
Olympus E-420 vs Sony A77 Key Specs
(Full Review)
- 10MP - Four Thirds Sensor
- 2.7" Fixed Display
- ISO 100 - 1600
- No Video
- Micro Four Thirds Mount
- 426g - 130 x 91 x 53mm
- Announced June 2008
- Superseded the Olympus E-410
(Full Review)
- 24MP - APS-C Sensor
- 3" Fully Articulated Display
- ISO 50 - 16000 (Boost to 25600)
- Sensor based Image Stabilization
- 1/8000s Max Shutter
- 1920 x 1080 video
- Sony/Minolta Alpha Mount
- 732g - 143 x 104 x 81mm
- Revealed October 2011
- Superseded the Sony A700
- Newer Model is Sony A77 II

Olympus E-420 vs Sony A77 Overview
In this write-up, we are contrasting the Olympus E-420 and Sony A77, one being a Entry-Level DSLR and the other is a Advanced DSLR by brands Olympus and Sony. There exists a crucial gap between the image resolutions of the E-420 (10MP) and A77 (24MP) and the E-420 (Four Thirds) and A77 (APS-C) possess different sensor measurements.

The E-420 was revealed 4 years prior to the A77 and that is quite a serious gap as far as technology is concerned. Both of the cameras offer different body type with the Olympus E-420 being a Compact SLR camera and the Sony A77 being a Mid-size SLR camera.
Before diving through a complete comparison, below is a simple view of how the E-420 matches up against the A77 when it comes to portability, imaging, features and an overall rating.

Olympus E-420 vs Sony A77 Gallery
The following is a sample of the gallery pictures for Olympus E-420 and Sony SLT-A77. The full galleries are available at Olympus E-420 Gallery and Sony A77 Gallery.
Reasons to pick Olympus E-420 over the Sony A77
E-420 | A77 |
---|
Reasons to pick Sony A77 over the Olympus E-420
A77 | E-420 | |||
---|---|---|---|---|
Revealed | October 2011 | ![]() | June 2008 | Fresher by 40 months |
Display type | Fully Articulated | ![]() | Fixed | Fully Articulating display |
Display sizing | 3" | ![]() | 2.7" | Larger display (+0.3") |
Display resolution | 921k | ![]() | 230k | Sharper display (+691k dot) |
Selfie screen | ![]() | Easy selfies |
Common features in the Olympus E-420 and Sony A77
E-420 | A77 | |||
---|---|---|---|---|
Manual focus | ![]() | More precise focus | ||
Touch friendly display | ![]() | Absent Touch friendly display |
Olympus E-420 vs Sony A77 Physical Comparison
When you are looking to carry your camera, you have to consider its weight and size. The Olympus E-420 offers external dimensions of 130mm x 91mm x 53mm (5.1" x 3.6" x 2.1") along with a weight of 426 grams (0.94 lbs) and the Sony A77 has specifications of 143mm x 104mm x 81mm (5.6" x 4.1" x 3.2") with a weight of 732 grams (1.61 lbs).
Look at the Olympus E-420 and Sony A77 in the new Camera and Lens Size Comparison Tool.
Remember that, the weight of an Interchangeable Lens Camera will change dependant on the lens you select at that moment. Here is the front view scale comparison of the E-420 and the A77.

Taking into account dimensions and weight, the portability score of the E-420 and A77 is 77 and 59 respectively.

Olympus E-420 vs Sony A77 Sensor Comparison
Typically, it can be hard to visualize the contrast between sensor sizing simply by checking specs. The graphic below might offer you a greater sense of the sensor dimensions in the E-420 and A77.
As you can plainly see, both the cameras offer different megapixel count and different sensor sizing. The E-420 having a tinier sensor is going to make getting bokeh harder and the Sony A77 will give more detail because of its extra 14MP. Greater resolution will let you crop pics a little more aggressively. The older E-420 is going to be behind with regard to sensor technology.

Olympus E-420 vs Sony A77 Screen and ViewFinder


Photography Type Scores
Portrait Comparison

Street Comparison

Sports Comparison

Travel Comparison

Landscape Comparison

Vlogging Comparison

Olympus E-420 vs Sony A77 Specifications
Olympus E-420 | Sony SLT-A77 | |
---|---|---|
General Information | ||
Brand | Olympus | Sony |
Model type | Olympus E-420 | Sony SLT-A77 |
Category | Entry-Level DSLR | Advanced DSLR |
Announced | 2008-06-23 | 2011-10-25 |
Body design | Compact SLR | Mid-size SLR |
Sensor Information | ||
Powered by | TruePic III | Bionz |
Sensor type | CMOS | CMOS |
Sensor size | Four Thirds | APS-C |
Sensor dimensions | 17.3 x 13mm | 23.5 x 15.6mm |
Sensor surface area | 224.9mm² | 366.6mm² |
Sensor resolution | 10 megapixel | 24 megapixel |
Anti alias filter | ||
Aspect ratio | 4:3 | 3:2 and 16:9 |
Full resolution | 3648 x 2736 | 6000 x 4000 |
Max native ISO | 1600 | 16000 |
Max boosted ISO | - | 25600 |
Lowest native ISO | 100 | 50 |
RAW files | ||
Autofocusing | ||
Manual focusing | ||
AF touch | ||
Continuous AF | ||
AF single | ||
AF tracking | ||
AF selectice | ||
Center weighted AF | ||
AF multi area | ||
Live view AF | ||
Face detect AF | ||
Contract detect AF | ||
Phase detect AF | ||
Total focus points | 3 | 19 |
Cross type focus points | - | 11 |
Lens | ||
Lens mount type | Micro Four Thirds | Sony/Minolta Alpha |
Number of lenses | 45 | 143 |
Focal length multiplier | 2.1 | 1.5 |
Screen | ||
Display type | Fixed Type | Fully Articulated |
Display diagonal | 2.7 inches | 3 inches |
Display resolution | 230 thousand dot | 921 thousand dot |
Selfie friendly | ||
Liveview | ||
Touch display | ||
Viewfinder Information | ||
Viewfinder | Optical (pentamirror) | Electronic |
Viewfinder resolution | - | 2,359 thousand dot |
Viewfinder coverage | 95% | 100% |
Viewfinder magnification | 0.46x | 0.73x |
Features | ||
Lowest shutter speed | 60 secs | 30 secs |
Highest shutter speed | 1/4000 secs | 1/8000 secs |
Continuous shooting speed | 4.0fps | 12.0fps |
Shutter priority | ||
Aperture priority | ||
Expose Manually | ||
Exposure compensation | Yes | Yes |
Set WB | ||
Image stabilization | ||
Integrated flash | ||
Flash distance | 12.00 m (at ISO 100) | 12.00 m |
Flash settings | Auto, Auto FP, Manual, Red-Eye | Auto, On, Off, Red-Eye, Slow Sync, High Speed Sync, Rear Curtain, Fill-in, Wireless |
External flash | ||
AE bracketing | ||
White balance bracketing | ||
Highest flash sync | 1/180 secs | 1/250 secs |
Exposure | ||
Multisegment metering | ||
Average metering | ||
Spot metering | ||
Partial metering | ||
AF area metering | ||
Center weighted metering | ||
Video features | ||
Supported video resolutions | - | 1920 x 1080 (60, 24 fps), 1440 x 1080 (30fps), 640 x 424 (29.97 fps) |
Max video resolution | None | 1920x1080 |
Video data format | - | MPEG-4, AVCHD, H.264 |
Mic jack | ||
Headphone jack | ||
Connectivity | ||
Wireless | None | Eye-Fi Connected |
Bluetooth | ||
NFC | ||
HDMI | ||
USB | USB 2.0 (480 Mbit/sec) | USB 2.0 (480 Mbit/sec) |
GPS | None | BuiltIn |
Physical | ||
Environmental seal | ||
Water proofing | ||
Dust proofing | ||
Shock proofing | ||
Crush proofing | ||
Freeze proofing | ||
Weight | 426 gr (0.94 lb) | 732 gr (1.61 lb) |
Dimensions | 130 x 91 x 53mm (5.1" x 3.6" x 2.1") | 143 x 104 x 81mm (5.6" x 4.1" x 3.2") |
DXO scores | ||
DXO All around rating | 56 | 78 |
DXO Color Depth rating | 21.5 | 24.0 |
DXO Dynamic range rating | 10.4 | 13.2 |
DXO Low light rating | 527 | 801 |
Other | ||
Battery life | 500 pictures | 470 pictures |
Form of battery | Battery Pack | Battery Pack |
Battery ID | - | NP-FM500H |
Self timer | Yes (2 or 12 sec) | Yes (2 or 10 sec) |
Time lapse recording | ||
Storage media | Compact Flash (Type I or II), xD Picture Card | SD/SDHC/SDXC/Memory Stick Pro Duo/ Pro-HG Duo |
Storage slots | 1 | 1 |
Retail cost | $999 | $900 |