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OM System OM-5 vs Sony A9

Portability
80
Imaging
64
Features
88
Overall
73
OM System OM-5 front
 
Sony Alpha A9 front
Portability
65
Imaging
73
Features
93
Overall
81

OM System OM-5 vs Sony A9 Key Specs

OM System OM-5
(Full Review)
  • 20MP - Four Thirds Sensor
  • 3.00" Fully Articulated Display
  • ISO 200 - 25600
  • Sensor based 5-axis Image Stabilization
  • 1/8000s Max Shutter
  • 4096 x 2160 video
  • Micro Four Thirds Mount
  • 414g - 125 x 85 x 50mm
  • Released October 2022
  • Old Model is Olympus E-M5 III
Sony A9
(Full Review)
  • 24MP - Full frame Sensor
  • 3" Tilting Screen
  • ISO 100 - 51200 (Increase to 204800)
  • Sensor based 5-axis Image Stabilization
  • 1/8000s Max Shutter
  • 3840 x 2160 video
  • Sony E Mount
  • 673g - 127 x 96 x 63mm
  • Launched April 2017
  • Replacement is Sony A9 II
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OM System OM-5 vs Sony A9 Overview

Lets look more closely at the OM System OM-5 and Sony A9, one being a Advanced Mirrorless and the latter is a Pro Mirrorless by rivals Olympus and Sony. The resolution of the OM System OM-5 (20MP) and the A9 (24MP) is relatively similar but the OM System OM-5 (Four Thirds) and A9 (Full frame) have totally different sensor size.

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The OM System OM-5 was launched 5 years later than the A9 and that is quite a large gap as far as tech is concerned. Each of the cameras feature the same body design (SLR-style mirrorless).

Before getting straight to a step-by-step comparison, here is a brief summary of how the OM System OM-5 matches up against the A9 in the way of portability, imaging, features and an overall grade.

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Reasons to pick OM System OM-5 over the Sony A9

 OM System OM-5 A9 
LaunchedOctober 2022April 2017More recent by 68 months
Screen typeFully ArticulatedTiltingFully Articulating screen
Selfie screen Take selfies

Reasons to pick Sony A9 over the OM System OM-5

 A9 OM System OM-5 
Screen resolution1440k1040kClearer screen (+400k dot)

Common features in the OM System OM-5 and Sony A9

 OM System OM-5 A9 
Manual focus More precise focusing
Screen size3.00"3"Same screen size
Touch friendly screen Quickly navigate

OM System OM-5 vs Sony A9 Physical Comparison

If you are intending to lug around your camera, you are going to need to consider its weight and measurements. The OM System OM-5 has exterior dimensions of 125mm x 85mm x 50mm (4.9" x 3.3" x 2.0") and a weight of 414 grams (0.91 lbs) whilst the Sony A9 has proportions of 127mm x 96mm x 63mm (5.0" x 3.8" x 2.5") with a weight of 673 grams (1.48 lbs).

Contrast the OM System OM-5 and Sony A9 in the all new Camera and Lens Size Comparison Tool. Camera Size Comparison with Lenses

Don't forget, the weight of an Interchangeable Lens Camera will differ depending on the lens you select at that moment. Below is a front view overall size comparison of the OM System OM-5 vs the A9.

OM System OM-5 vs Sony A9 size comparison

Factoring in size and weight, the portability grade of the OM System OM-5 and A9 is 80 and 65 respectively.

OM System OM-5 vs Sony A9 top view buttons comparison

OM System OM-5 vs Sony A9 Sensor Comparison

Oftentimes, it's hard to envision the difference between sensor measurements only by reviewing specs. The graphic underneath may give you a much better sense of the sensor sizes in the OM System OM-5 and A9.

As you can plainly see, each of the cameras come with different megapixel count and different sensor measurements. The OM System OM-5 due to its tinier sensor will make achieving shallow depth of field tougher and the Sony A9 will deliver more detail utilizing its extra 4MP. Higher resolution will make it easier to crop shots a good deal more aggressively. The more recent OM System OM-5 will have a benefit when it comes to sensor innovation.

OM System OM-5 vs Sony A9 sensor size comparison

OM System OM-5 vs Sony A9 Screen and ViewFinder

OM System OM-5 vs Sony A9 Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

OM System OM-5 Portrait photography advice
Sony A9 Portrait photography advice
78
manual focus
megapixel count good (20MP)
sensor size is good (Four Thirds)
includes face detection focusing
saves RAW formats
83
has manual focus
resolution is good (24MP)
large sensor size (Full frame)
comes with face detect focusing
delivers RAW files
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Street Comparison

OM System OM-5 Street photography details
Sony A9 Street photography details
84
fully articulated screen
built in image stabilization (Sensor based 5-axis)
sensor size is good (Four Thirds)
saves RAW formats
boasts touch focus
environment sealing
very good ISO range (25,600)
79
screen tilts up and down
has image stabilization (Sensor based 5-axis)
large sensor size (Full frame)
delivers RAW files
features touch to focus
environment proof
above average ISO range (51,200)
Photography Glossary

Sports Comparison

OM System OM-5 as a Sports photography camera
Sony A9 as a Sports photography camera
76
maximum shutter speed is high (1/8,000s)
quiet mode (1/32,000s)
built in image stabilization (Sensor based 5-axis)
megapixel count good (20MP)
sensor size is good (Four Thirds)
includes tracking autofocus
environment sealing
sensor has phase detect AF
bad battery (310 shots)
86
high shutter speed (1/8,000s)
quiet shooting (1/32,000s)
fast shooting (20.0 fps)
has image stabilization (Sensor based 5-axis)
resolution is good (24MP)
large sensor size (Full frame)
comes with tracking focus
environment proof
better than average battery life (650 per charge)
supports phase detect AF
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Travel Comparison

OM System OM-5 Travel photography features
Sony A9 Travel photography features
78
environment sealing
has bluetooth
boasts touch focus
megapixel count good (20 megapixels)
selfie friendly screen
bad battery (310 shots)
73
better than average battery life (650 per charge)
environment proof
connects via bluetooth
features touch to focus
resolution is good (24MP)
display isn't selfie friendly
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Landscape Comparison

OM System OM-5 Landscape photography details
Sony A9 Landscape photography details
78
manual focus
switch lenses (Micro Four Thirds mount)
pretty good screen size (3.00 inches)
built in image stabilization (Sensor based 5-axis)
megapixel count good (20 megapixels)
sensor size is good (Four Thirds)
very good ISO range (25,600)
saves RAW formats
environment sealing
bad battery (310 CIPA)
85
has manual focus
interchangeable lenses (Sony E mount)
screen size is good (3 inch)
has image stabilization (Sensor based 5-axis)
resolution is good (24MP)
large sensor size (Full frame)
above average ISO range (51,200)
delivers RAW files
environment proof
better than average battery life (650 shots)
two card slots
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Vlogging Comparison

OM System OM-5 Vlogging features
Sony A9 Vlogging features
84
selfie friendly screen
screen is touchscreen
built in image stabilization (Sensor based 5-axis)
includes face detection focusing
high quality video (4096 x 2160 resolution)
includes external microphone port
36
touch screen
has image stabilization (Sensor based 5-axis)
comes with face detect focusing
video resolution high (3840 x 2160 resolution)
comes with microphone socket
display isn't selfie friendly
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OM System OM-5 vs Sony A9 Specifications

Detailed spec comparison table for OM System OM-5 and Sony A9
 OM System OM-5Sony Alpha A9
General Information
Manufacturer Olympus Sony
Model OM System OM-5 Sony Alpha A9
Type Advanced Mirrorless Pro Mirrorless
Released 2022-10-26 2017-04-19
Physical type SLR-style mirrorless SLR-style mirrorless
Sensor Information
Processor - BIONZ X
Sensor type CMOS BSI-CMOS
Sensor size Four Thirds Full frame
Sensor measurements 17.4 x 13mm 35.6 x 23.8mm
Sensor area 226.2mm² 847.3mm²
Sensor resolution 20 megapixel 24 megapixel
Anti aliasing filter
Aspect ratio 1:1, 4:3, 3:2 and 16:9 3:2 and 16:9
Max resolution 5184 x 3888 6000 x 4000
Max native ISO 25600 51200
Max enhanced ISO - 204800
Lowest native ISO 200 100
RAW data
Lowest enhanced ISO 64 50
Autofocusing
Manual focus
Touch to focus
AF continuous
Single AF
AF tracking
Selective AF
Center weighted AF
Multi area AF
AF live view
Face detect AF
Contract detect AF
Phase detect AF
Number of focus points 121 693
Lens
Lens mounting type Micro Four Thirds Sony E
Available lenses 119 121
Focal length multiplier 2.1 1
Screen
Type of display Fully Articulated Tilting
Display size 3.00 inch 3 inch
Display resolution 1,040 thousand dots 1,440 thousand dots
Selfie friendly
Liveview
Touch screen
Viewfinder Information
Viewfinder type Electronic Electronic
Viewfinder resolution 2,360 thousand dots 3,686 thousand dots
Viewfinder coverage 100% 100%
Viewfinder magnification 0.68x 0.78x
Features
Minimum shutter speed 60 secs 30 secs
Fastest shutter speed 1/8000 secs 1/8000 secs
Fastest quiet shutter speed 1/32000 secs 1/32000 secs
Continuous shutter rate 10.0 frames per sec 20.0 frames per sec
Shutter priority
Aperture priority
Manual mode
Exposure compensation Yes Yes
Change WB
Image stabilization
Inbuilt flash
Flash range no built-in flash no built-in flash
Flash modes Auto, redeye, fill, off, redeye slow sync, slow sync, 2nd-curtain slow sync, manual Flash off, Autoflash, Fill-flash, Slow Sync., Rear Sync., Red-eye reduction, Wireless, Hi-speed sync
External flash
AEB
WB bracketing
Fastest flash synchronize 1/250 secs -
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 PCM -
Max video resolution 4096x2160 3840x2160
Video data format MPEG-4, H.264 MPEG-4, AVCHD, H.264
Microphone port
Headphone port
Connectivity
Wireless Built-In Built-In
Bluetooth
NFC
HDMI
USB USB 2.0 (480 Mbit/sec) USB 2.0 (480 Mbit/sec)
GPS None None
Physical
Environmental sealing
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 414 gr (0.91 lb) 673 gr (1.48 lb)
Physical dimensions 125 x 85 x 50mm (4.9" x 3.3" x 2.0") 127 x 96 x 63mm (5.0" x 3.8" x 2.5")
DXO scores
DXO Overall score not tested 92
DXO Color Depth score not tested 24.9
DXO Dynamic range score not tested 13.3
DXO Low light score not tested 3517
Other
Battery life 310 images 650 images
Battery type Battery Pack Battery Pack
Battery model BLS-50 NP-FZ100
Self timer Yes (2 or 10 secs, custom) Yes (2, 5, 10 secs + continuous)
Time lapse recording
Storage type SD/SDHC/SDXC (UHS-II supported) Dual SD/SDHC/SDXC slots (UHS-II compatible)
Card slots One Two
Retail cost $1,200 $4,498