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Olympus OM-D E-M1 Mark III vs OM System OM-1 Comparison

Storage & Battery

Olympus OM-D E-M1 Mark III

Olympus OM-D E-M1 Mark III Black Product Image

Olympus OM System OM-1

Olympus OM System OM-1 Product image
Olympus OM-D E-M1 Mark III
Olympus OM System OM-1
OM-D E-M1 Mark III
OM System OM-1
Refers to the year this camera was officially made available for sale.
Announcement Date
Refers to the date the manufacturer publicly announced the upcoming release and general specs of this camera.
February 12, 2020
February 15, 2022
Camera Type
Camera Size
Camera Weight

The Olympus OM System OM-1 edges out the Olympus OM-D E-M1 Mark III with a score of 73/100 compared to 72/100. Both cameras share the mirrorless design, similar dimensions, and a close weight, with the OM-1 weighing slightly more at 599g. The OM-1 also boasts a more recent release, arriving in 2022 compared to the E-M1 Mark III in 2020.

The OM-1’s higher score reflects its superior performance and innovation, justifying its higher launch price of $2199 compared to the E-M1 Mark III’s $1799. However, the E-M1 Mark III remains a competitive option with a slightly lighter build and a more affordable price point.

Considering the specifications, both cameras offer excellent features, but the OM-1 has the advantage due to its improved performance and more recent release. The E-M1 Mark III, on the other hand, may be more suitable for those seeking a lighter and more budget-friendly option.

Olympus OM-D E-M1 Mark III vs OM System OM-1 Overview and Optics

The Olympus OM System OM-1 triumphs over the Olympus OM-D E-M1 Mark III in optics with a score of 69 to 68. Both cameras share several common specifications, including 20-megapixel resolution, Micro Four Thirds sensor size, Micro 4/3 lens mount, and image stabilization.

The OM-1 surpasses the E-M1 Mark III with its superior Stacked CMOS sensor and TruePic X Dual Quad Core Processor, resulting in a higher DXOMARK score of 85 compared to the latter’s 80. This difference in sensor quality and processing power contributes to the OM-1’s better performance in capturing images. Furthermore, the OM-1’s shooting speed of 10 is slower than the E-M1 Mark III’s 60, which may be advantageous for photographers who prefer a more deliberate shooting pace.

On the other hand, the E-M1 Mark III has a faster shooting speed of 60, which is beneficial for capturing fast-moving subjects and action photography. Its CMOS sensor and TruePic IX processor may not be as advanced as the OM-1’s, but they still deliver high-quality images with a respectable DXOMARK score of 80.

In terms of optics, the Olympus OM System OM-1 is the superior choice due to its enhanced sensor and processing capabilities. However, the Olympus OM-D E-M1 Mark III’s faster shooting speed offers advantages for specific photography styles. Ultimately, both cameras provide excellent optical performance, with the OM-1 having a slight edge over the E-M1 Mark III.

The higher the number of megapixels, the more detail the cameras sensor can capture.
20 MP
20 MP
Image Resolution
Image resolution is measured in pixels and megapixels, width by height. The higher the number, the higher its resolution.
5184 x 3888 px
5184 x 3888 px
Sensor Type
The camera sensor captures light and records the image. Sensors vary in physical size, the number of pixels, and quality.
Stacked CMOS
Sensor Size
The sensor size contributes to the overall quality as well as the dynamic and tonal range a camera can capture. As a rule of thumb, the more surface there is to read the light, the more information it will capture.
17.4 x 13 mm
13 x 17.4 mm
Sensor Format
Refers to the most commonly used sensor sizes.
Micro Four Thirds
Micro Four Thirds
Frame Rate
The number of sequential frames per second the camera can write to the memory card when shooting in burst or continuous mode.
60 fps
10 fps
Lens Mount
The lens mount will tell you what type of lens range you can fit onto the camera body. Often the same camera company will have different lens ranges for different cameras.
Micro 4/3
Micro 4/3
Image Processor
The image processor in the camera converts the information collected on the sensor for digital storage on the memory card.
TruePic IX
TruePic X Dual Quad Core Processor
Aspect Ratio
The aspect ratio refers to the proportional difference between width and height. The most popular aspect ratios are 3:2 and 4:3.
Minimum ISO (Native)
Refers to the lowest native (or 'base') ISO setting. Lower ISO are less sensitive to light but make a cleaner image.
Maximum ISO (Native)
Refers to the highest native (or 'base') ISO setting. Higher ISO is necessary for low-light situations or night photography, but higher ISOs often introduce grain or noise.
Minimum ISO (Expanded)
Expanded (or extended) ISO is a digitally enhanced feature available on some cameras. It allows you to push beyond the native ISO range if necessary.
Maximum ISO (Expanded)
Expanded (or extended) ISO is a digitally enhanced feature available on some cameras. It allows you to push beyond the native ISO range if necessary.
Minimum Shutter Speed
The minimum shutter speed will tell you the longest exposure your camera can take without using an external accessory.
60 s
60 s
Maximum Shutter Speed
The maximum shutter speed tells you the length inside 1 second the camera will capture. These can sometimes be extended with accessories such as extra external batteries.
1/ 8000 s
1/ 8000 s
Autofocus Points
Autofocus points show where the camera is focusing graphically as squares or brackets in Live View or on an electronic viewfinder. These points are also used for light meter readings.
In-body Stabilization
In-body Stabilization means the camera has a certain technology embedded that counteracts camera shake.
Viewfinder Type
The viewfinder type is either electronic or optical. Electronic viewfinders will have a small screen in the viewfinder. Optical viewfinders will use prisms and mirrors to look through the lens.
Viewfinder Resolution
2,360,000 dots
5,760,000 dots

Olympus OM-D E-M1 Mark III vs OM System OM-1 Video Performance

The Olympus OM-D E-M1 Mark III and the Olympus OM System OM-1 both score 83/100 for their video capabilities. These cameras have identical video specifications, making them equally strong contenders in the video department.

Both cameras offer a maximum video resolution of 4K, with dimensions of 4096 x 2160. This high-resolution video quality is suitable for professional videography projects and ensures that users can capture sharp and detailed footage. Additionally, both cameras support a maximum video frame rate of 60fps. This feature is essential for capturing fast-moving subjects and creating smooth slow-motion videos.

One common feature between the two cameras is the built-in time-lapse functionality. This allows users to create stunning time-lapse videos without the need for additional software or equipment. This feature is particularly useful for filmmakers and content creators who want to add a creative touch to their projects.

While both cameras offer the same video capabilities, there are no specific advantages that one camera has over the other in this aspect. However, it is worth considering other factors, such as the overall performance, design, and price, when deciding which camera to purchase.

Given that the Olympus OM-D E-M1 Mark III and the Olympus OM System OM-1 have identical video scores and specifications, neither camera is superior in terms of video performance. Users can confidently choose either camera for their video projects, knowing that they will receive high-quality results. The ultimate decision should be based on individual preferences and additional factors beyond video capabilities.

Indicates if this camera is capable of recording video.
Max Video Resolution
The best resolution this camera can capture video in. Modern cameras can capture up to 8K video.
Max Video Dimensions
Video resolution measured by the greatest number of pixels possible in each frame, width by height. A higher resolution means more detail or clarity in your video.
4096 x 2160 px
4096 x 2160 px
Max Video Frame Rate
How many frames per second your video will capture. Most cameras have options for multiple frame rates, depending on the resolution you shoot in. For a general video, 24p or 30p is the standard, but more serious filmmakers may need a higher frame rate for creative effect.
60 p
60 p
Time-Lapse Built In
A built in time-lapse mode will allow continuous shooting throughout a prolonged period of time to be compressed into a sped up video.
Video File Format
Different cameras can record in various video file formats. The File format you record in can impact how you edit and use the files.

Olympus OM-D E-M1 Mark III vs OM System OM-1 Features and Benefits

The Olympus OM-D E-M1 Mark III and the Olympus OM System OM-1 both have a feature score of 83/100, indicating that they are equally strong in this aspect. These cameras share several specifications, making them quite similar in their offerings.

Both cameras have a 3-inch screen size and possess touchscreen capabilities, allowing users to easily navigate their settings and interact with their device. Additionally, they both have flip screens, which are useful for capturing images and videos from various angles. Neither camera has GPS functionality, but they do have WIFI and Bluetooth capabilities, making it easy to connect and transfer files to other devices.

Despite the identical feature scores, there are a few differences between the two cameras. The Olympus OM-D E-M1 Mark III has a slightly lower screen resolution at 1,037,000 dots, compared to the Olympus OM System OM-1’s 1,040,000 dots. This difference, however, is minimal and may not greatly impact the user’s experience.

In terms of advantages for the Olympus OM System OM-1, the marginally higher screen resolution could be considered a plus. However, it may not be significant enough to make a noticeable difference in the overall performance of the camera.

Given the similarities in feature scores and specifications, both the Olympus OM-D E-M1 Mark III and the Olympus OM System OM-1 are strong contenders in their respective categories. Users can expect a high-quality experience from both cameras, with only minor differences in screen resolution to distinguish them. Ultimately, the choice between these two cameras will likely depend on personal preferences and specific needs.

Built-in Flash
A built-in flash will often be positioned right above the lens. This will automatically pop up when you activate it.
External Flash
External flashes are often connected through a hot shoe at the top of a camera, or a cable at the side of the camera.
GPS features in a camera will include location metadata to each of your photographs.
Weather Sealing
Weather sealing capabilities will give you more confidence when shooting in unfavourable conditions.
Screen Type
Touch Screen
Touchscreen allows you to change camera settings and access menus with a swipe of your finger, instead of using buttons.
Screen Size
Screen Resolution
Screen dots indicate the resolution of the LCD screen by including each sub pixel.
1,037,000 dots
1,040,000 dots
Flip Screen
A flip screen (or articulating screen) is a second screen which can flip out from the side or top of the camera. This rotating screen allows you more freedom to take photos at different angles.
Live View
Live View feature allows you to see a continuous live video of what is being seen through your lens.
Bluetooth capabilities allow you wireless control of your camera with other external devices.

Olympus OM-D E-M1 Mark III vs OM System OM-1 Storage and Battery

The Olympus OM System OM-1 outperforms the Olympus OM-D E-M1 Mark III in storage and battery, scoring 73/100 compared to the latter’s 71/100. Both cameras share similarities, such as having two memory card slots and accepting SD, SDHC, and SDXC cards. They also both offer USB charging capabilities.

The OM-1 has an edge over the E-M1 Mark III with its compatibility with UHS-I and II memory cards, providing faster read and write speeds. Additionally, the OM-1 boasts a longer battery life of 530 shots, while the E-M1 Mark III only offers 420 shots per charge.

Although the E-M1 Mark III scores lower, it still features one UHS-II compatible slot, offering faster speeds than a standard slot. However, the OM-1’s overall advantages in storage and battery life make it the superior choice in this comparison. Both cameras have their strengths, but the OM-1’s better performance in these areas provides users with a more efficient and reliable shooting experience.

Storage and Battery
Storage and Battery
Memory Card
SD / SDHC / SDXC (UHS-II compatible on one slot)
SD / SDHC / SDXC (UHS-I & II compatible)
Dual Memory Card Slots
Battery Type
Battery Life
Approximately how long this cameras battery will last measured by how many photographs you will be able to take.
420 shots
530 shots
USB Charging
Sensor scores tested by DXOMARK

Olympus OM-D E-M1 Mark III vs OM System OM-1 – Our Verdict

Olympus OM-D E-M1 Mark III vs OM System OM-1 Comparison image.

Are you still undecided about which camera is right for you? Have a look at these popular comparisons that feature the Olympus OM-D E-M1 Mark III or the Olympus OM System OM-1:

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