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Olympus E-M1 III vs Sony A850

Portability
67
Imaging
62
Features
96
Overall
75
Olympus OM-D E-M1 Mark III front
 
Sony Alpha DSLR-A850 front
Portability
54
Imaging
68
Features
60
Overall
64

Olympus E-M1 III vs Sony A850 Key Specs

Olympus E-M1 III
(Full Review)
  • 20MP - Four Thirds Sensor
  • 3" Fully Articulated Display
  • ISO 200 - 25600
  • Sensor based 5-axis Image Stabilization
  • No Anti-Alias Filter
  • 1/8000s Maximum Shutter
  • 4096 x 2160 video
  • Micro Four Thirds Mount
  • 580g - 134 x 91 x 69mm
  • Launched February 2020
  • Earlier Model is Olympus E-M1 II
Sony A850
(Full Review)
  • 25MP - Full frame Sensor
  • 3" Fixed Screen
  • ISO 200 - 3200 (Boost to 6400)
  • Sensor based Image Stabilization
  • 1/8000s Max Shutter
  • No Video
  • Sony/Minolta Alpha Mount
  • 895g - 156 x 117 x 82mm
  • Released April 2010
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Olympus E-M1 III vs Sony A850 Overview

Lets look a bit more in depth at the Olympus E-M1 III vs Sony A850, one being a Pro Mirrorless and the latter is a Advanced DSLR by brands Olympus and Sony. The sensor resolution of the E-M1 III (20MP) and the A850 (25MP) is relatively close but the E-M1 III (Four Thirds) and A850 (Full frame) possess different sensor measurements.

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The E-M1 III was brought out 9 years later than the A850 and that is a fairly serious gap as far as camera technology is concerned. Each of the cameras come with different body type with the Olympus E-M1 III being a SLR-style mirrorless camera and the Sony A850 being a Mid-size SLR camera.

Before diving through a complete comparison, below is a quick view of how the E-M1 III grades vs the A850 with regard to portability, imaging, features and an overall rating.

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Reasons to pick Olympus E-M1 III over the Sony A850

 E-M1 III A850 
ReleasedFebruary 2020April 2010Fresher by 120 months
Screen typeFully ArticulatedFixed Fully Articulating screen
Screen resolution1037k922kSharper screen (+115k dot)
Selfie screen Easy selfies
Touch friendly screen Quickly navigate

Reasons to pick Sony A850 over the Olympus E-M1 III

 A850 E-M1 III 

Common features in the Olympus E-M1 III and Sony A850

 E-M1 III A850 
Manual focus Very accurate focusing
Screen dimension3"3"Identical screen measurements

Olympus E-M1 III vs Sony A850 Physical Comparison

For anybody who is planning to carry your camera often, you will have to factor its weight and volume. The Olympus E-M1 III offers exterior measurements of 134mm x 91mm x 69mm (5.3" x 3.6" x 2.7") along with a weight of 580 grams (1.28 lbs) while the Sony A850 has sizing of 156mm x 117mm x 82mm (6.1" x 4.6" x 3.2") and a weight of 895 grams (1.97 lbs).

Examine the Olympus E-M1 III vs Sony A850 in the all new Camera and Lens Size Comparison Tool. Camera Size Comparison with Lenses

Always remember, the weight of an Interchangeable Lens Camera will change dependant on the lens you are utilising at that moment. The following is the front view proportions comparison of the E-M1 III compared to the A850.

Olympus E-M1 III vs Sony A850 size comparison

Taking into account dimensions and weight, the portability rating of the E-M1 III and A850 is 67 and 54 respectively.

Olympus E-M1 III vs Sony A850 top view buttons comparison

Olympus E-M1 III vs Sony A850 Sensor Comparison

Normally, its hard to imagine the contrast in sensor sizing simply by viewing a spec sheet. The graphic underneath may offer you a more clear sense of the sensor sizing in the E-M1 III and A850.

As you can see, both of the cameras posses different megapixel count and different sensor sizing. The E-M1 III due to its smaller sensor is going to make getting bokeh trickier and the Sony A850 will result in more detail having its extra 5MP. Higher resolution will help you crop shots somewhat more aggressively. The fresher E-M1 III provides an advantage with regard to sensor tech.

Olympus E-M1 III vs Sony A850 sensor size comparison

Olympus E-M1 III vs Sony A850 Screen and ViewFinder

Olympus E-M1 III vs Sony A850 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Olympus E-M1 III Portrait photography details
Sony A850 Portrait photography details
77
you can focus manually
decent sensor resolution (20MP)
good sensor size (Four Thirds)
includes face detect focusing
saves RAW formats
72
you can focus manually
resolution is fantastic (25 megapixels)
great sensor size (Full frame)
exports RAW formats
doesn't have liveview
Photography Glossary

Street Comparison

Olympus E-M1 III Street photography info
Sony A850 Street photography info
78
fully articulated screen
image stabilization (Sensor based 5-axis)
good sensor size (Four Thirds)
saves RAW formats
includes touch to focus
environment proofing
very good ISO range (25,600)
66
image stabilization (Sensor based)
great sensor size (Full frame)
exports RAW formats
environment proof
no moving screen
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Sports Comparison

Olympus E-M1 III Sports photography advice
Sony A850 Sports photography advice
81
max shutter speed is good (1/8,000 seconds)
silent shooting (1/32,000 seconds)
fast continuous shooting (60.0 fps)
image stabilization (Sensor based 5-axis)
decent sensor resolution (20 megapixels)
good sensor size (Four Thirds)
includes tracking focus
environment proofing
has phase detect AF
71
high shutter speed (1/8,000s)
image stabilization (Sensor based)
resolution is fantastic (25 megapixels)
great sensor size (Full frame)
environment proof
comes with phase detect auto focus
doesn't have liveview
max fps low (3.0 frames per second)
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Travel Comparison

Olympus E-M1 III as a Travel photography camera
Sony A850 as a Travel photography camera
79
environment proofing
connects via bluetooth
includes touch to focus
decent sensor resolution (20MP)
screen is selfie friendly
55
environment proof
resolution is fantastic (25 megapixels)
no Timelapse function
doesn't have a selfie friendly display
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Landscape Comparison

Olympus E-M1 III Landscape photography factors
Sony A850 Landscape photography factors
81
you can focus manually
change lenses (Micro Four Thirds mount)
screen size is good (3")
image stabilization (Sensor based 5-axis)
decent sensor resolution (20 megapixels)
good sensor size (Four Thirds)
doesnt have anti-alias filter
very good ISO range (25,600)
saves RAW formats
environment proofing
has double storage slots
73
you can focus manually
switch lenses (Sony/Minolta Alpha mount)
screen size is good (3 inches)
image stabilization (Sensor based)
resolution is fantastic (25 megapixels)
great sensor size (Full frame)
exports RAW formats
environment proof
two card slots
doesn't have liveview
no Timelapse function
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Vlogging Comparison

Vlogging with Olympus E-M1 III
Vlogging with Sony A850
79
screen is selfie friendly
screen is touchscreen
image stabilization (Sensor based 5-axis)
includes face detect focusing
video res high (4096 x 2160 pixels)
has mic port
9
can't shoot video
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Olympus E-M1 III vs Sony A850 Specifications

Detailed spec comparison table for Olympus E-M1 III and Sony A850
 Olympus OM-D E-M1 Mark IIISony Alpha DSLR-A850
General Information
Company Olympus Sony
Model type Olympus OM-D E-M1 Mark III Sony Alpha DSLR-A850
Class Pro Mirrorless Advanced DSLR
Launched 2020-02-11 2010-04-15
Physical type SLR-style mirrorless Mid-size SLR
Sensor Information
Powered by TruePic IX Bionz
Sensor type CMOS CMOS
Sensor size Four Thirds Full frame
Sensor measurements 17.4 x 13mm 35.9 x 24mm
Sensor area 226.2mm² 861.6mm²
Sensor resolution 20MP 25MP
Anti alias filter
Aspect ratio 4:3 3:2 and 16:9
Highest resolution 5184 x 3888 6048 x 4032
Highest native ISO 25600 3200
Highest boosted ISO - 6400
Lowest native ISO 200 200
RAW format
Lowest boosted ISO 64 -
Autofocusing
Manual focusing
Touch to focus
Autofocus continuous
Single autofocus
Tracking autofocus
Selective autofocus
Center weighted autofocus
Multi area autofocus
Autofocus live view
Face detect autofocus
Contract detect autofocus
Phase detect autofocus
Total focus points 121 9
Cross type focus points 121 -
Lens
Lens mount type Micro Four Thirds Sony/Minolta Alpha
Number of lenses 107 143
Focal length multiplier 2.1 1
Screen
Type of display Fully Articulated Fixed Type
Display diagonal 3 inches 3 inches
Display resolution 1,037k dots 922k dots
Selfie friendly
Liveview
Touch display
Display tech - TFT Xtra Fine color LCD
Viewfinder Information
Viewfinder type Electronic Optical (pentaprism)
Viewfinder resolution 2,360k dots -
Viewfinder coverage 100 percent 98 percent
Viewfinder magnification 0.74x 0.74x
Features
Lowest shutter speed 60s 30s
Highest shutter speed 1/8000s 1/8000s
Highest quiet shutter speed 1/32000s -
Continuous shooting rate 60.0 frames per second 3.0 frames per second
Shutter priority
Aperture priority
Manual mode
Exposure compensation Yes Yes
Change white balance
Image stabilization
Integrated flash
Flash distance no built-in flash no built-in flash
Flash options Redeye, Fill-in, Flash Off, Red-eye Slow sync.(1st curtain), Slow sync.(1st curtain), Slow sync.(2nd curtain), Manual Auto, On, Off, Red-Eye, Slow Sync, Rear Curtain, Fill-in, Wireless
External flash
AEB
White balance bracketing
Highest flash synchronize 1/250s 1/250s
Exposure
Multisegment exposure
Average exposure
Spot exposure
Partial exposure
AF area exposure
Center weighted exposure
Video features
Supported video resolutions 4096 x 2160 @ 24p / 237 Mbps, MOV, H.264, Linear PCM3840 x 2160 @ 30p / 102 Mbps, MOV, H.264, Linear PCM3840 x 2160 @ 25p / 102 Mbps, MOV, H.264, Linear PCM3840 x 2160 @ 23.98p / 102 Mbps, MOV, H.264, Linear PCM1920 x 1080 @ 60p, MOV, H.264, Linear PCM1920 x 1080 @ 50p, MOV, H.264, Linear PCM1920 x 1080 @ 30p, MOV, H.264, Linear PCM1920 x 1080 @ 25p, MOV, H.264, Linear PCM1920 x 1080 @ 23.98p, MOV, H.264, Linear PCM -
Highest video resolution 4096x2160 None
Video format MPEG-4, H.264 -
Microphone port
Headphone port
Connectivity
Wireless Built-In None
Bluetooth
NFC
HDMI
USB USB 3.1 Gen 1 (5 GBit/sec) USB 2.0 (480 Mbit/sec)
GPS None None
Physical
Environmental sealing
Water proofing
Dust proofing
Shock proofing
Crush proofing
Freeze proofing
Weight 580g (1.28 pounds) 895g (1.97 pounds)
Dimensions 134 x 91 x 69mm (5.3" x 3.6" x 2.7") 156 x 117 x 82mm (6.1" x 4.6" x 3.2")
DXO scores
DXO All around rating not tested 79
DXO Color Depth rating not tested 23.8
DXO Dynamic range rating not tested 12.2
DXO Low light rating not tested 1415
Other
Battery life 420 photos 880 photos
Battery type Battery Pack Battery Pack
Battery ID BLH-1 NP-FM500H
Self timer Yes (2 or 12 secs, custom) Yes (2 or 10 sec)
Time lapse recording
Storage type Dual SD/SDHC/SDXC slots (UHS-II on first slot) Compact Flash (Type I or II), UDMA, Memory Stick Duo / Pro Duo
Card slots Dual Dual
Retail cost $1,800 $0