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Olympus E-M5 II vs Sony A100

Portability
80
Imaging
54
Features
84
Overall
66
Olympus OM-D E-M5 II front
 
Sony Alpha DSLR-A100 front
Portability
64
Imaging
49
Features
38
Overall
44

Olympus E-M5 II vs Sony A100 Key Specs

Olympus E-M5 II
(Full Review)
  • 16MP - Four Thirds Sensor
  • 3" Fully Articulated Display
  • ISO 200 - 25600
  • Sensor based 5-axis Image Stabilization
  • 1/8000s Maximum Shutter
  • 1920 x 1080 video
  • Micro Four Thirds Mount
  • 469g - 124 x 85 x 45mm
  • Introduced February 2015
  • Succeeded the Olympus E-M5
  • Refreshed by Olympus E-M5 III
Sony A100
(Full Review)
  • 10MP - APS-C Sensor
  • 2.5" Fixed Display
  • ISO 100 - 1600
  • Sensor based Image Stabilization
  • No Video
  • Sony/Minolta Alpha Mount
  • 638g - 133 x 95 x 71mm
  • Announced July 2006
  • Old Model is Konica Minolta 5D
  • Refreshed by Sony A550
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Olympus E-M5 II vs Sony A100 Overview

Following is a complete comparison of the Olympus E-M5 II vs Sony A100, former is a Advanced Mirrorless while the other is a Entry-Level DSLR by competitors Olympus and Sony. There is a sizable difference between the sensor resolutions of the E-M5 II (16MP) and A100 (10MP) and the E-M5 II (Four Thirds) and A100 (APS-C) posses different sensor size.

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The E-M5 II was introduced 8 years after the A100 which is quite a significant difference as far as tech is concerned. Both of these cameras have different body design with the Olympus E-M5 II being a SLR-style mirrorless camera and the Sony A100 being a Compact SLR camera.

Before going into a more detailed comparison, here is a short highlight of how the E-M5 II grades versus the A100 in relation to portability, imaging, features and an overall score.

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Reasons to pick Olympus E-M5 II over the Sony A100

 E-M5 II A100 
AnnouncedFebruary 2015July 2006More modern by 104 months
Display typeFully ArticulatedFixed Fully Articulating display
Display dimensions3"2.5"Larger display (+0.5")
Display resolution1037k230kSharper display (+807k dot)
Selfie screen Take selfies
Touch friendly display Easily navigate

Reasons to pick Sony A100 over the Olympus E-M5 II

 A100 E-M5 II 

Common features in the Olympus E-M5 II and Sony A100

 E-M5 II A100 
Manually focus Dial precise focus

Olympus E-M5 II vs Sony A100 Physical Comparison

In case you're looking to carry around your camera frequently, you have to think about its weight and size. The Olympus E-M5 II has exterior dimensions of 124mm x 85mm x 45mm (4.9" x 3.3" x 1.8") and a weight of 469 grams (1.03 lbs) while the Sony A100 has specifications of 133mm x 95mm x 71mm (5.2" x 3.7" x 2.8") along with a weight of 638 grams (1.41 lbs).

Look at the Olympus E-M5 II vs Sony A100 in our brand new Camera & Lens Size Comparison Tool. Camera Size Comparison with Lenses

Remember, the weight of an ILC will differ based on the lens you are working with during that time. Following is a front view dimension comparison of the E-M5 II and the A100.

Olympus E-M5 II vs Sony A100 size comparison

Taking into consideration size and weight, the portability score of the E-M5 II and A100 is 80 and 64 respectively.

Olympus E-M5 II vs Sony A100 top view buttons comparison

Olympus E-M5 II vs Sony A100 Sensor Comparison

In many cases, it is tough to picture the gap between sensor sizes purely by reading specs. The pic below will give you a more clear sense of the sensor dimensions in the E-M5 II and A100.

As you can plainly see, both of these cameras have different resolutions and different sensor sizes. The E-M5 II having a tinier sensor is going to make getting shallow depth of field more challenging and the Olympus E-M5 II will deliver extra detail using its extra 6 Megapixels. Greater resolution can also enable you to crop pics a bit more aggressively. The younger E-M5 II should have an advantage with regard to sensor tech.

Olympus E-M5 II vs Sony A100 sensor size comparison

Olympus E-M5 II vs Sony A100 Screen and ViewFinder

Olympus E-M5 II vs Sony A100 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Olympus E-M5 II Portrait photography advice
Sony A100 Portrait photography advice
72
you can focus manually
good resolution (16 megapixels)
nice sensor size (Four Thirds)
offers face detect focusing
saves RAW formats
53
focusing manually
sensor size is nice (APS-C)
saves RAW formats
does not have liveview
megapixel count low (10 megapixels)
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Street Comparison

Street photography with Olympus E-M5 II
Street photography with Sony A100
82
screen can move to multiple angles
has image stabilization (Sensor based 5-axis)
nice sensor size (Four Thirds)
saves RAW formats
provides focus by touch
environment sealing
great ISO range (25,600)
65
image stabilization (Sensor based)
sensor size is nice (APS-C)
saves RAW formats
no moving screen
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Sports Comparison

Olympus E-M5 II as a Sports photography camera
Sony A100 as a Sports photography camera
65
high shutter speed (1/8,000 seconds)
quiet shooting (1/16,000 seconds)
has image stabilization (Sensor based 5-axis)
good resolution (16MP)
nice sensor size (Four Thirds)
offers tracking focus
environment sealing
terrible battery (310 per charge)
doesn't have phase detect AF
49
image stabilization (Sensor based)
sensor size is nice (APS-C)
comes with phase detect auto focus
does not have liveview
max fps very slow (3.0 fps)
megapixel count low (10 megapixels)
Photography Glossary

Travel Comparison

Olympus E-M5 II as a Travel photography camera
Sony A100 as a Travel photography camera
74
environment sealing
provides focus by touch
good resolution (16 megapixels)
selfie friendly display
terrible battery (310 per charge)
45
built-in flash
lack of Time Lapse function
megapixel count low (10 megapixels)
doesn't posses selfie friendly display
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Landscape Comparison

Olympus E-M5 II Landscape photography features
Sony A100 Landscape photography features
74
you can focus manually
switch lenses (Micro Four Thirds mount)
good sized screen (3 inch)
has image stabilization (Sensor based 5-axis)
good resolution (16MP)
nice sensor size (Four Thirds)
great ISO range (25,600)
saves RAW formats
environment sealing
terrible battery (310 per charge)
53
focusing manually
switch lenses (Sony/Minolta Alpha mount)
image stabilization (Sensor based)
sensor size is nice (APS-C)
saves RAW formats
screen is small (2.5 inch)
does not have liveview
megapixel count low (10MP)
lack of Time Lapse function
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Vlogging Comparison

Olympus E-M5 II Vlogging details
Sony A100 Vlogging details
82
selfie friendly display
touchscreen capability
has image stabilization (Sensor based 5-axis)
offers face detect focusing
video resolution high (1920 x 1080 pixels)
does have mic support
9
lack of video recording
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Olympus E-M5 II vs Sony A100 Specifications

Detailed spec comparison table for Olympus E-M5 II and Sony A100
 Olympus OM-D E-M5 IISony Alpha DSLR-A100
General Information
Brand Name Olympus Sony
Model type Olympus OM-D E-M5 II Sony Alpha DSLR-A100
Class Advanced Mirrorless Entry-Level DSLR
Introduced 2015-02-06 2006-07-31
Physical type SLR-style mirrorless Compact SLR
Sensor Information
Powered by TruePic VII -
Sensor type MOS CCD
Sensor size Four Thirds APS-C
Sensor dimensions 17.3 x 13mm 23.6 x 15.8mm
Sensor area 224.9mm² 372.9mm²
Sensor resolution 16 megapixel 10 megapixel
Anti alias filter
Aspect ratio 1:1, 4:3, 3:2 and 16:9 3:2
Highest resolution 4608 x 3456 3872 x 2592
Highest native ISO 25600 1600
Lowest native ISO 200 100
RAW format
Lowest boosted ISO 100 -
Autofocusing
Focus manually
Autofocus touch
Continuous autofocus
Single autofocus
Autofocus tracking
Autofocus selectice
Autofocus center weighted
Autofocus multi area
Live view autofocus
Face detect focus
Contract detect focus
Phase detect focus
Total focus points 81 9
Lens
Lens mount type Micro Four Thirds Sony/Minolta Alpha
Number of lenses 107 143
Crop factor 2.1 1.5
Screen
Display type Fully Articulated Fixed Type
Display sizing 3 inches 2.5 inches
Resolution of display 1,037k dots 230k dots
Selfie friendly
Liveview
Touch operation
Viewfinder Information
Viewfinder type Electronic Optical (pentamirror)
Viewfinder resolution 2,360k dots -
Viewfinder coverage 100 percent 95 percent
Viewfinder magnification 0.74x 0.55x
Features
Slowest shutter speed 60s 30s
Maximum shutter speed 1/8000s 1/4000s
Maximum quiet shutter speed 1/16000s -
Continuous shooting rate 10.0 frames per second 3.0 frames per second
Shutter priority
Aperture priority
Manually set exposure
Exposure compensation Yes Yes
Change white balance
Image stabilization
Integrated flash
Flash distance no built-in flash -
Flash modes Auto, redeye, fill, off, redeye slow sync, slow sync, 2nd-curtain slow sync, manual Auto, Fill-in, Red-Eye reduction, Slow Sync, Off
Hot shoe
AE bracketing
White balance bracketing
Maximum flash synchronize 1/250s 1/160s
Exposure
Multisegment
Average
Spot
Partial
AF area
Center weighted
Video features
Video resolutions 1920 x 1080 (60p, 50p, 30p, 25p, 24p), 1280 x 720 (60p, 50p, 30p, 25p, 24p), 640 x 480 (30p) -
Highest video resolution 1920x1080 None
Video data format MPEG-4, H.264, Motion JPEG -
Mic support
Headphone support
Connectivity
Wireless Built-In None
Bluetooth
NFC
HDMI
USB USB 2.0 (480 Mbit/sec) USB 2.0 (480 Mbit/sec)
GPS None None
Physical
Environment sealing
Water proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 469g (1.03 lbs) 638g (1.41 lbs)
Physical dimensions 124 x 85 x 45mm (4.9" x 3.3" x 1.8") 133 x 95 x 71mm (5.2" x 3.7" x 2.8")
DXO scores
DXO All around rating 73 61
DXO Color Depth rating 23.0 22.0
DXO Dynamic range rating 12.4 11.2
DXO Low light rating 896 476
Other
Battery life 310 shots -
Battery style Battery Pack -
Battery ID BLN-1 NP-FM55H
Self timer Yes (2 or 10 secs, custom) Yes (2 or 10 sec)
Time lapse feature
Type of storage SD/SDHC/SDXC Compact Flash (Type I or II)
Card slots 1 1
Cost at launch $699 $1,000