OM System OM-1 vs Sony A7S III
Portability
65 Imaging
63 Features
96 Overall
76
65 Imaging
63 Features
96 Overall
76
Portability
61 Imaging
65 Features
92 Overall
75
61 Imaging
65 Features
92 Overall
75
OM System OM-1 vs Sony A7S III Key Specs
OM System OM-1
(Full Review)
(Full Review)
- 20MP - Four Thirds Sensor
- 3.00" Fully Articulated Display
- ISO 200 - 25600 (Push to 102400)
- Sensor based 5-axis Image Stabilization
- No Anti-Alias Filter
- 1/8000s Max Shutter
- 4096 x 2160 video
- Micro Four Thirds Mount
- 599g - 135 x 92 x 73mm
- Released February 2022
Sony A7S III
(Full Review)
(Full Review)
- 12MP - Full frame Sensor
- 3" Fully Articulated Screen
- ISO 80 - 102400 (Expand to 409600)
- Sensor based 5-axis Image Stabilization
- 1/8000s Maximum Shutter
- 3840 x 2160 video
- Sony E Mount
- 699g - 129 x 97 x 81mm
- Launched July 2020
- Earlier Model is Sony A7S II
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Lets look a bit more closely at the OM System OM-1 vs Sony A7S III, both Pro Mirrorless digital cameras by manufacturers Olympus and Sony. There exists a large gap between the sensor resolutions of the OM System OM-1 (20MP) and A7S III (12MP) and the OM System OM-1 (Four Thirds) and A7S III (Full frame) possess different sensor measurements.
Pentax 17 Pre-Orders Outperform Expectations by a LandslideThe OM System OM-1 was introduced 20 months later than the A7S III which makes the cameras a generation apart from one another. Each of these cameras offer the identical body type (SLR-style mirrorless).
Before we go in to a in depth comparison, below is a quick summation of how the OM System OM-1 matches up vs the A7S III with respect to portability, imaging, features and an overall grade.
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The following is a preview of the gallery photos for OM System OM-1 & Sony Alpha A7S III. The whole galleries are viewable at OM System OM-1 Gallery & Sony A7S III Gallery.
Reasons to pick OM System OM-1 over the Sony A7S III
| OM System OM-1 | A7S III | |||
|---|---|---|---|---|
| Launched | February 2022 |  | July 2020 | More recent by 20 months |
| Screen resolution | 1620k |  | 1440k | Crisper screen (+180k dot) |
Reasons to pick Sony A7S III over the OM System OM-1
| A7S III | OM System OM-1 |
|---|
Common features in the OM System OM-1 and Sony A7S III
| OM System OM-1 | A7S III | |||
|---|---|---|---|---|
| Manual focus |  | More accurate focus | ||
| Screen type | Fully Articulated |  | Fully articulated | Fully Articulated screen |
| Screen sizing | 3.00" |  | 3" | Equivalent screen measurements |
| Selfie screen |  | Both are selfie friendly | ||
| Touch friendly screen |  | Quickly navigate |
OM System OM-1 vs Sony A7S III Physical Comparison
If you are going to lug around your camera, you need to think about its weight and size. The OM System OM-1 offers outer measurements of 135mm x 92mm x 73mm (5.3" x 3.6" x 2.9") along with a weight of 599 grams (1.32 lbs) while the Sony A7S III has specifications of 129mm x 97mm x 81mm (5.1" x 3.8" x 3.2") and a weight of 699 grams (1.54 lbs).
Contrast the OM System OM-1 vs Sony A7S III in our completely new Camera & Lens Size Comparison Tool.
Remember, the weight of an ILC will change dependant on the lens you choose during that time. Below is the front view measurements comparison of the OM System OM-1 vs the A7S III.
Factoring in dimensions and weight, the portability rating of the OM System OM-1 and A7S III is 65 and 61 respectively.
OM System OM-1 vs Sony A7S III Sensor Comparison
More often than not, it is very difficult to visualize the difference between sensor measurements merely by reading specs. The graphic below might give you a far better sense of the sensor sizing in the OM System OM-1 and A7S III.
All in all, both the cameras offer different megapixel count and different sensor measurements. The OM System OM-1 having a tinier sensor is going to make achieving shallower depth of field harder and the OM System OM-1 will offer you more detail using its extra 8 Megapixels. Higher resolution can also enable you to crop photographs a little more aggressively. The newer OM System OM-1 should have an edge in sensor technology.
OM System OM-1 vs Sony A7S III Screen and ViewFinder
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Portrait Comparison
OM System OM-1 Portrait photography details
Sony A7S III Portrait photography details
has manual focus
resolution is good (20MP)
sensor size is nice (Four Thirds)
includes face detect focusing
delivers RAW formats
focusing manually
sensor size is big (Full frame)
includes face detect focusing
exports RAW files
low resolution (12MP)
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OM System OM-1 Street photography information
Sony A7S III Street photography information
screen articulates fully
built in image stabilization (Sensor based 5-axis)
sensor size is nice (Four Thirds)
delivers RAW formats
supports touch to focus
environment proof
good ISO range (25,600)
has image stabilization (Sensor based 5-axis)
sensor size is big (Full frame)
exports RAW files
offers touch focus
environment proofing
great high ISO (102,400)
Photography GlossarySports Comparison
OM System OM-1 Sports photography information
Sony A7S III Sports photography information
maximum shutter speed is high (1/8,000 seconds)
quiet shooting (1/32,000 seconds)
built in image stabilization (Sensor based 5-axis)
resolution is good (20 megapixels)
sensor size is nice (Four Thirds)
includes tracking focus
environment proof
great battery life (520 per charge)
supports phase detect AF
maximum shutter speed is high (1/8,000 seconds)
has image stabilization (Sensor based 5-axis)
sensor size is big (Full frame)
includes tracking focus
environment proofing
good battery power (600 per charge)
sensor has phase detect AF
low resolution (12MP)
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OM System OM-1 Travel photography features
Sony A7S III Travel photography features
great battery life (520 shots)
environment proof
has bluetooth
supports touch to focus
resolution is good (20 megapixels)
selfie friendly screen
good battery power (600 CIPA)
environment proofing
has bluetooth
offers touch focus
display is selfie friendly
low resolution (12 megapixels)
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OM System OM-1 as a Landscape photography camera
Sony A7S III as a Landscape photography camera
has manual focus
switch lenses (Micro Four Thirds mount)
screen is a good size (3.00 inches)
built in image stabilization (Sensor based 5-axis)
resolution is good (20 megapixels)
sensor size is nice (Four Thirds)
does not have low pass filter
good ISO range (25,600)
delivers RAW formats
environment proof
great battery life (520 per charge)
has dual storage slots
focusing manually
switch lenses (Sony E mount)
good sized screen (3")
has image stabilization (Sensor based 5-axis)
sensor size is big (Full frame)
great high ISO (102,400)
exports RAW files
environment proofing
good battery power (600 per charge)
2 card slots
low resolution (12MP)
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Vlogging with OM System OM-1
Vlogging with Sony A7S III
selfie friendly screen
touchscreen
built in image stabilization (Sensor based 5-axis)
includes face detect focusing
video res high (4096 x 2160 pxls)
comes with microphone jack
display is selfie friendly
built-in touchscreen
has image stabilization (Sensor based 5-axis)
includes face detect focusing
video res high (3840 x 2160 pixels)
includes microphone support
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OM System OM-1 vs Sony A7S III Specifications
| OM System OM-1 | Sony Alpha A7S III | |
|---|---|---|
| General Information | ||
| Make | Olympus | Sony |
| Model | OM System OM-1 | Sony Alpha A7S III |
| Category | Pro Mirrorless | Pro Mirrorless |
| Released | 2022-02-15 | 2020-07-21 |
| Physical type | SLR-style mirrorless | SLR-style mirrorless |
| Sensor Information | ||
| Processor Chip | - | Bionz XR |
| Sensor type | Stacked BSI Live MOS Sensor | BSI-CMOS |
| Sensor size | Four Thirds | Full frame |
| Sensor measurements | 17.4 x 13mm | 35.6 x 23.8mm |
| Sensor surface area | 226.2mm² | 847.3mm² |
| Sensor resolution | 20 megapixel | 12 megapixel |
| Anti aliasing filter | ||
| Aspect ratio | 4:3 | 3:2 and 16:9 |
| Maximum resolution | 5184 x 3888 | 4240 x 2832 |
| Maximum native ISO | 25600 | 102400 |
| Maximum boosted ISO | 102400 | 409600 |
| Min native ISO | 200 | 80 |
| RAW pictures | ||
| Min boosted ISO | 80 | 50 |
| Autofocusing | ||
| Focus manually | ||
| Autofocus touch | ||
| Autofocus continuous | ||
| Single autofocus | ||
| Autofocus tracking | ||
| Selective autofocus | ||
| Center weighted autofocus | ||
| Multi area autofocus | ||
| Autofocus live view | ||
| Face detect focus | ||
| Contract detect focus | ||
| Phase detect focus | ||
| Number of focus points | 1053 | 759 |
| Cross focus points | 1053 | - |
| Lens | ||
| Lens mounting type | Micro Four Thirds | Sony E |
| Total lenses | 118 | 121 |
| Focal length multiplier | 2.1 | 1 |
| Screen | ||
| Type of display | Fully Articulated | Fully articulated |
| Display sizing | 3.00 inches | 3 inches |
| Resolution of display | 1,620 thousand dots | 1,440 thousand dots |
| Selfie friendly | ||
| Liveview | ||
| Touch friendly | ||
| Viewfinder Information | ||
| Viewfinder | Electronic | Electronic |
| Viewfinder resolution | 5,760 thousand dots | 9,440 thousand dots |
| Viewfinder coverage | 100% | 100% |
| Viewfinder magnification | 0.83x | 0.91x |
| Features | ||
| Lowest shutter speed | 60 secs | 30 secs |
| Highest shutter speed | 1/8000 secs | 1/8000 secs |
| Highest quiet shutter speed | 1/32000 secs | - |
| Continuous shooting rate | 10.0 frames per sec | 10.0 frames per sec |
| Shutter priority | ||
| Aperture priority | ||
| Manually set exposure | ||
| Exposure compensation | Yes | Yes |
| Custom white balance | ||
| Image stabilization | ||
| Integrated 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 | ||
| AEB | ||
| WB bracketing | ||
| Highest flash synchronize | 1/250 secs | - |
| Exposure | ||
| Multisegment metering | ||
| Average metering | ||
| Spot metering | ||
| Partial metering | ||
| AF area metering | ||
| Center weighted metering | ||
| Video features | ||
| Supported video resolutions | - | 3840 x 2160 @ 120p / 280 Mbps, XAVC S, MP4, H.265, Linear PCM 3840 x 2160 @ 100p / 280 Mbps, XAVC S, MP4, H.265, Linear PCM 3840 x 2160 @ 60p / 200 Mbps, XAVC S, MP4, H.265, Linear PCM 3840 x 2160 @ 50p / 200 Mbps, XAVC S, MP4, H.265, Linear PCM 3840 x 2160 @ 30p / 140 Mbps, XAVC S, MP4, H.265, Linear PCM 3840 x 2160 @ 25p / 140 Mbps, XAVC S, MP4, H.265, Linear PCM 3840 x 2160 @ 24p / 100 Mbps, XAVC S, MP4, H.265, Linear PCM 1920 x 1080 @ 120p / 100 Mbps, XAVC S, MP4, H.264, Linear PCM 1920 x 1080 @ 100p / 100 Mbps, XAVC S, MP4, H.264, Linear PCM 1920 x 1080 @ 60p / 50 Mbps, XAVC S, MP4, H.264, Linear PCM 1920 x 1080 @ 50p / 50 Mbps, XAVC S, MP4, H.264, Linear PCM 1920 x 1080 @ 25p / 50 Mbps, XAVC S, MP4, H.264, Linear PCM 1920 x 1080 @ 24p / 50 Mbps, XAVC S, MP4, H.264, Linear PCM |
| Maximum video resolution | 4096x2160 | 3840x2160 |
| Video file format | MPEG-4, H.264, H.265, HEVC | MPEG-4, XAVC S, XAVC HS, XAVC S-1, H.264, H.265 |
| Microphone support | ||
| Headphone support | ||
| Connectivity | ||
| Wireless | Built-In | Built-In |
| Bluetooth | ||
| NFC | ||
| HDMI | ||
| USB | USB 3.1 Gen 1 (5 GBit/sec) | USB 3.2 Gen 1 (5 GBit/sec) |
| GPS | None | None |
| Physical | ||
| Environmental sealing | ||
| 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 All around score | not tested | 85 |
| DXO Color Depth score | not tested | 23.6 |
| DXO Dynamic range score | not tested | 13.3 |
| DXO Low light score | not tested | 2993 |
| Other | ||
| Battery life | 520 images | 600 images |
| Battery style | 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 recording | With downloadable app | |
| Storage type | Dual SD/SDHC/SDXC slots (UHS-II on first slot) | Dual SD/CFexpress Type A slots |
| Card slots | Dual | Dual |
| Retail cost | $2,199 | $3,499 |