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OM System OM-1 vs Sony A7 IV

Portability
65
Imaging
64
Features
96
Overall
76
OM System OM-1 front
 
Sony Alpha A7 IV front
Portability
61
Imaging
81
Features
92
Overall
85

OM System OM-1 vs Sony A7 IV Key Specs

OM System OM-1
(Full Review)
  • 20MP - Four Thirds Sensor
  • 3.00" Fully Articulated Display
  • ISO 200 - 25600 (Bump to 102400)
  • Sensor based 5-axis Image Stabilization
  • No Anti-Alias Filter
  • 1/8000s Maximum Shutter
  • 4096 x 2160 video
  • Micro Four Thirds Mount
  • 599g - 135 x 92 x 73mm
  • Announced February 2022
Sony A7 IV
(Full Review)
  • 33MP - Full frame Sensor
  • 3" Fully Articulated Display
  • ISO 100 - 51200 (Expand to 204800)
  • Sensor based 5-axis Image Stabilization
  • 1/8000s Maximum Shutter
  • 3840 x 2160 video
  • Sony E Mount
  • 699g - 129 x 97 x 81mm
  • Released October 2021
  • Superseded the Sony A7 III
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OM System OM-1 vs Sony A7 IV Overview

Lets look much closer at the OM System OM-1 vs Sony A7 IV, both Pro Mirrorless cameras by competitors Olympus and Sony. There is a noticeable difference among the resolutions of the OM System OM-1 (20MP) and A7 IV (33MP) and the OM System OM-1 (Four Thirds) and A7 IV (Full frame) use totally different sensor measurements.

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The OM System OM-1 was announced 4 months later than the A7 IV which means that they are both of a similar age. Both the cameras come with the identical body type (SLR-style mirrorless).

Before we go in to a full comparison, below is a short view of how the OM System OM-1 grades vs the A7 IV in terms of portability, imaging, features and an overall rating.

Photography Glossary
	
	

Reasons to pick OM System OM-1 over the Sony A7 IV

 OM System OM-1 A7 IV 
Display resolution1620k1440kClearer display (+180k dot)

Reasons to pick Sony A7 IV over the OM System OM-1

 A7 IV OM System OM-1 

Common features in the OM System OM-1 and Sony A7 IV

 OM System OM-1 A7 IV 
ReleasedFebruary 2022October 2021Same age
Manual focus Dial precise focus
Display typeFully ArticulatedFully articulatedFully Articulated display
Display dimension3.00"3"Identical display measurements
Selfie screen Both good for selfies
Touch friendly display Easily navigate

OM System OM-1 vs Sony A7 IV Physical Comparison

For anybody who is looking to carry your camera frequently, you will have to take into account its weight and size. The OM System OM-1 features physical dimensions of 135mm x 92mm x 73mm (5.3" x 3.6" x 2.9") with a weight of 599 grams (1.32 lbs) and the Sony A7 IV has specifications of 129mm x 97mm x 81mm (5.1" x 3.8" x 3.2") having a weight of 699 grams (1.54 lbs).

Examine the OM System OM-1 vs Sony A7 IV in our completely new Camera plus Lens Size Comparison Tool. Camera Size Comparison with Lenses

Don't forget, the weight of an ILC will vary depending on the lens you are utilizing at that time. Below is the front view proportions comparison of the OM System OM-1 versus the A7 IV.

OM System OM-1 vs Sony A7 IV size comparison

Using size and weight, the portability score of the OM System OM-1 and A7 IV is 65 and 61 respectively.

OM System OM-1 vs Sony A7 IV top view buttons comparison

OM System OM-1 vs Sony A7 IV Sensor Comparison

In many cases, it is very hard to envision the difference in sensor sizing only by seeing a spec sheet. The visual here will give you a greater sense of the sensor sizes in the OM System OM-1 and A7 IV.

As you can see, both the cameras posses different megapixels and different sensor sizing. The OM System OM-1 having a smaller sensor will make achieving bokeh more difficult and the Sony A7 IV will show more detail with its extra 13 Megapixels. Greater resolution will also let you crop images somewhat more aggressively.

OM System OM-1 vs Sony A7 IV sensor size comparison

OM System OM-1 vs Sony A7 IV Screen and ViewFinder

OM System OM-1 vs Sony A7 IV Screen and Viewfinder comparison
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Photography Type Scores

Portrait Comparison

Portrait photography with OM System OM-1
Portrait photography with Sony A7 IV
78
manual focus
sensor resolution is decent (20MP)
sensor size is good (Four Thirds)
offers face detection focus
supports RAW files
81
manual focus
high resolution (33MP)
sensor size is large (Full frame)
supports face detect focus
delivers RAW files
doesn't have liveview
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Street Comparison

Street photography with OM System OM-1
Street photography with Sony A7 IV
77
screen articulates fully
built in image stabilization (Sensor based 5-axis)
sensor size is good (Four Thirds)
supports RAW files
provides touch focus
weather proofing
good ISO range (25,600)
79
built in image stabilization (Sensor based 5-axis)
sensor size is large (Full frame)
delivers RAW files
comes with focus via touch
environment sealing
very good ISO range (51,200)
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Sports Comparison

OM System OM-1 Sports photography information
Sony A7 IV Sports photography information
82
max shutter speed is good (1/8,000s)
silent shutter (1/32,000s)
built in image stabilization (Sensor based 5-axis)
sensor resolution is decent (20MP)
sensor size is good (Four Thirds)
offers tracking autofocus
weather proofing
good battery pack (520 CIPA)
comes with phase detect auto focus
84
max shutter speed is good (1/8,000 seconds)
built in image stabilization (Sensor based 5-axis)
high resolution (33 megapixels)
sensor size is large (Full frame)
supports tracking focus
environment sealing
good battery life (600 per charge)
comes with phase detect auto focus
doesn't have liveview
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Travel Comparison

OM System OM-1 Travel photography details
Sony A7 IV Travel photography details
78
good battery pack (520 CIPA)
weather proofing
has bluetooth
provides touch focus
sensor resolution is decent (20 megapixels)
selfie friendly display
80
good battery life (600 shots)
environment sealing
connects via bluetooth
comes with focus via touch
high resolution (33 megapixels)
screen is selfie friendly
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Landscape Comparison

OM System OM-1 Landscape photography features
Sony A7 IV Landscape photography features
82
manual focus
change lenses (Micro Four Thirds mount)
decent sized screen (3.00 inches)
built in image stabilization (Sensor based 5-axis)
sensor resolution is decent (20MP)
sensor size is good (Four Thirds)
doesnt have anti aliasing filter
good ISO range (25,600)
supports RAW files
weather proofing
good battery pack (520 shots)
has dual storage slots
84
manual focus
interchangeable lenses (Sony E mount)
good sized screen (3")
built in image stabilization (Sensor based 5-axis)
high resolution (33 megapixels)
sensor size is large (Full frame)
very good ISO range (51,200)
delivers RAW files
environment sealing
good battery life (600 per charge)
has double storage slots
doesn't have liveview
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Vlogging Comparison

OM System OM-1 Vlogging features
Sony A7 IV Vlogging features
78
selfie friendly display
built-in touchscreen
built in image stabilization (Sensor based 5-axis)
offers face detection focus
great video quality (4096 x 2160 resolution)
does have external mic jack
80
screen is selfie friendly
touchscreen enabled
built in image stabilization (Sensor based 5-axis)
supports face detect focus
video resolution high (3840 x 2160 pxls)
does have microphone port
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OM System OM-1 vs Sony A7 IV Specifications

Detailed spec comparison table for OM System OM-1 and Sony A7 IV
 OM System OM-1Sony Alpha A7 IV
General Information
Manufacturer Olympus Sony
Model OM System OM-1 Sony Alpha A7 IV
Type Pro Mirrorless Pro Mirrorless
Announced 2022-02-15 2021-10-21
Body design SLR-style mirrorless SLR-style mirrorless
Sensor Information
Sensor type Stacked BSI Live MOS Sensor BSI-CMOS
Sensor size Four Thirds Full frame
Sensor measurements 17.4 x 13mm 35.8 x 23.8mm
Sensor area 226.2mm² 852.0mm²
Sensor resolution 20 megapixels 33 megapixels
Anti aliasing filter
Aspect ratio 4:3 1:1, 4:3, 3:2 and 16:9
Max resolution 5184 x 3888 7008 x 4672
Max native ISO 25600 51200
Max enhanced ISO 102400 204800
Lowest native ISO 200 100
RAW images
Lowest enhanced ISO 80 50
Autofocusing
Manual focus
AF touch
Continuous AF
Single AF
AF tracking
Selective AF
AF center weighted
AF multi area
AF live view
Face detect focusing
Contract detect focusing
Phase detect focusing
Number of focus points 1053 759
Cross focus points 1053 -
Lens
Lens mounting type Micro Four Thirds Sony E
Available lenses 118 172
Focal length multiplier 2.1 1
Screen
Display type Fully Articulated Fully articulated
Display sizing 3.00 inches 3 inches
Resolution of display 1,620 thousand dot 1,440 thousand dot
Selfie friendly
Liveview
Touch screen
Viewfinder Information
Viewfinder Electronic Electronic
Viewfinder resolution 5,760 thousand dot 3,690 thousand dot
Viewfinder coverage 100% 100%
Viewfinder magnification 0.83x 0.78x
Features
Minimum shutter speed 60 seconds 30 seconds
Fastest shutter speed 1/8000 seconds 1/8000 seconds
Fastest quiet shutter speed 1/32000 seconds -
Continuous shutter speed 10.0 frames/s 10.0 frames/s
Shutter priority
Aperture priority
Expose Manually
Exposure compensation Yes Yes
Change WB
Image stabilization
Inbuilt flash
Flash range no built-in flash no built-in flash
Flash settings Redeye, Fill-in, Flash Off, Red-eye Slow sync.(1st curtain), Slow sync.(1st curtain), Slow sync.(2nd curtain), Manual no built-in flash
Hot shoe
AE bracketing
White balance bracketing
Fastest flash sync 1/250 seconds 1/200 seconds
Exposure
Multisegment metering
Average metering
Spot metering
Partial metering
AF area metering
Center weighted metering
Video features
Video resolutions - 3843840 x 2160 @ 60p / 200 Mbps, XAVC HS, MP4, H.265, Linear PCM3840 x 2160 @ 50p / 200 Mbps, XAVC HS, MP4, H.265, Linear PCM3840 x 2160 @ 30p / 140 Mbps, XAVC HS, MP4, H.265, Linear PCM3840 x 2160 @ 25p / 140 Mbps, XAVC HS, MP4, H.265, Linear PCM3840 x 2160 @ 24p / 100 Mbps, XAVC HS, MP4, H.265, Linear PCM3840 x 2160 @ 60p / 600 Mbps, XAVC S-I, MP4, H.264, Linear PCM3840 x 2160 @ 50p / 500 Mbps, XAVC S-I, MP4, H.264, Linear PCM3840 x 2160 @ 30p / 300 Mbps, XAVC S-I, MP4, H.264, Linear PCM3840 x 2160 @ 25p / 250 Mbps, XAVC S-I, MP4, H.264, Linear PCM3840 x 2160 @ 24p / 240 Mbps, XAVC S-I, MP4, H.264, Linear PCM3840 x 2160 @ 120p / 280 Mbps, XAVC S, MP4, H.264, Linear PCM3840 x 2160 @ 100p / 280 Mbps, XAVC S, MP4, H.264, Linear PCM3840 x 2160 @ 60p / 200 Mbps, XAVC S, MP4, H.264, Linear PCM3840 x 2160 @ 50p / 200 Mbps, XAVC S, MP4, H.264, Linear PCM3840 x 2160 @ 30p /
Max video resolution 4096x2160 3840x2160
Video format MPEG-4, H.264, H.265, HEVC MPEG-4, XAVC S, XAVC HS, XAVC S-I, H.264, H.265
Microphone jack
Headphone jack
Connectivity
Wireless Built-In Built-In
Bluetooth
NFC
HDMI
USB USB 3.1 Gen 1 (5 GBit/sec) Yes (USB PD supported)
GPS None None
Physical
Environmental seal
Water proof
Dust proof
Shock proof
Crush proof
Freeze proof
Weight 599g (1.32 lbs) 699g (1.54 lbs)
Dimensions 135 x 92 x 73mm (5.3" x 3.6" x 2.9") 129 x 97 x 81mm (5.1" x 3.8" x 3.2")
DXO scores
DXO Overall score not tested not tested
DXO Color Depth score not tested not tested
DXO Dynamic range score not tested not tested
DXO Low light score not tested not tested
Other
Battery life 520 photos 600 photos
Style of battery Battery Pack Battery Pack
Battery model BLX-1 NP-FZ100
Self timer Yes (2 or 12 secs, custom) Yes (2 or 10 sec; continuous (3 or 5 exposures))
Time lapse feature
Type of storage Dual SD/SDHC/SDXC slots (UHS-II on first slot) Dual SD/CFexpress Type A slots
Storage slots Dual Dual
Retail price $2,199 $2,500