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Canon EOS R100 Mirrorless Camera RF-S18- vs OM SYSTEM Olympus OM-3 Silver Micro Four Thirds

Updated August 2026 — Canon EOS R100 Mirrorless Camera RF-S18- wins on portability and value, OM SYSTEM Olympus OM-3 Silver Micro Four Thirds wins on build and weight.

The Canon EOS R100 is a more affordable and user-friendly option for beginners, while the OM SYSTEM Olympus OM-3 offers advanced features for professionals. Overall, the Canon is the better choice for entry-level users.

Why Canon EOS R100 Mirrorless Camera RF-S18- is better

Price

Canon EOS R100 is $579, significantly less than Olympus OM-3 at $1,699.

Video Quality

Canon supports 4K video recording, while Olympus does not.

Portability

Canon is the smallest and lightest in its series, ideal for travel.

Why OM SYSTEM Olympus OM-3 Silver Micro Four Thirds is better

Build Quality

Olympus features a premium metal body with weather sealing.

Creative Features

Olympus offers advanced computational photography options.

Viewfinder

Olympus has a high-resolution OLED electronic viewfinder.

Overall score

Canon EOS R100 Mirrorless Camera RF-S18-
85
OM SYSTEM Olympus OM-3 Silver Micro Four Thirds
75

Specifications

SpecCanon EOS R100 Mirrorless Camera RF-S18-OM SYSTEM Olympus OM-3 Silver Micro Four Thirds
Megapixels24.1 MP20 MP
Sensor TypeAPS-CMicro Four Thirds
Video4K at 24fpsNot primarily for video
AutofocusDual Pixel AFStandard AF
ISO Range100-25600200-25600

Dimension comparison

Canon EOS R100 Mirrorless Camera RF-S18-OM SYSTEM Olympus OM-3 Silver Micro Four Thirds

Overview of the Cameras

The Canon EOS R100 Mirrorless Camera is priced at $579.00, while the OM SYSTEM Olympus OM-3 comes in at a significantly higher price of $1,699.99. This represents a price difference of approximately 194%, making the Canon EOS R100 a more accessible option for many users.

The Canon EOS R100 is designed for those who are new to mirrorless photography, featuring a compact design and a 24.1 Megapixel APS-C sensor. It emphasizes portability and ease of use, making it ideal for casual photographers or those just starting. In contrast, the OM SYSTEM Olympus OM-3 is built with professional features and durability in mind, catering to users looking for advanced capabilities and weather-sealing for outdoor photography.

Image Quality Comparison

The Canon EOS R100 delivers stellar image quality with its 24.1 Megapixel CMOS sensor, allowing for natural bokeh and detailed captures. The camera's DIGIC 8 image processor enhances shooting functionality and supports 4K video, making it a strong contender for high-resolution needs.

On the other hand, the OM SYSTEM Olympus OM-3 features a 20 MP Stacked BSI Live MOS sensor that excels in low-light conditions and provides computational photography features, such as Live ND and Focus Stacking. While the Canon offers higher megapixels, the Olympus's advanced sensor technology and image stabilization capabilities may appeal to photographers seeking creative flexibility in challenging environments.

Design and Build Quality

The Canon EOS R100 is compact and lightweight, making it the smallest and lightest camera in the EOS R series. This design is particularly advantageous for users who prioritize mobility and convenience in their photography gear.

In contrast, the OM SYSTEM Olympus OM-3 boasts a vintage-styled, premium metal body, which not only enhances its aesthetic appeal but also contributes to its durability. With an IP53 rating, it is dustproof, splashproof, and freezeproof, offering peace of mind for outdoor photographers. This robust construction makes the Olympus a reliable choice for those who frequently shoot in varying weather conditions.

Autofocus and Shooting Speed

The Canon EOS R100 features advanced Dual Pixel CMOS AF, covering a wide area of up to 143 zones. This autofocus system includes human face and eye detection, making it suitable for capturing sharp images of people and animals. With continuous shooting capabilities of up to 6.5 frames per second, the Canon provides solid performance for fast-paced situations.

Conversely, the OM SYSTEM Olympus OM-3 includes a slew of computational photography features and a 2.36m-dot OLED electronic viewfinder that enhances shooting accuracy and experience. While the Canon may edge out in autofocus versatility and speed, the Olympus provides unique features that may be appealing for creative photographers looking to experiment with their shots.

Video Capabilities

The Canon EOS R100 excels in video capabilities, offering 4K video recording at 24 frames per second and Full HD at 60 frames per second. The ability to capture HD video at up to 120 frames per second makes it an excellent choice for videographers at an entry-level price point.

The OM SYSTEM Olympus OM-3, while not primarily marketed for video, includes features like slow motion and quick motion video through its S&Q mode. However, it does not match the Canon's 4K recording capabilities, which may limit its appeal for those focused on high-definition video production.

Target Audience

The Canon EOS R100 is aimed at entry-level photographers and content creators who value portability and straightforward functionality. Its price point of $579.00 makes it an attractive option for students or hobbyists looking to explore mirrorless technology without a hefty investment.

On the other hand, the OM SYSTEM Olympus OM-3 is targeted at more experienced photographers who require advanced features and robust construction. The higher price of $1,699.99 reflects its premium build quality and professional-level capabilities, making it suitable for those who are serious about their craft and often shoot in demanding conditions.

Price and Value

At $579.00, the Canon EOS R100 offers significant value for users seeking a capable mirrorless camera without breaking the bank. This price point is about 194% less than the OM SYSTEM Olympus OM-3, which comes at $1,699.99. For those on a budget, the Canon presents a compelling proposition.

The Olympus, while substantially more expensive, provides unique features and durability that may justify its price for professional users. Its premium build and advanced capabilities can make it a worthwhile investment for serious photographers.

Which should you buy?

Choosing between the Canon EOS R100 and the OM SYSTEM Olympus OM-3 ultimately depends on your needs and budget. If you are an entry-level photographer seeking a lightweight, affordable camera with excellent video capabilities, the Canon EOS R100 is the clear winner. Its affordability and ease of use make it an excellent starting point for anyone venturing into mirrorless photography.

However, if you are an experienced photographer looking for advanced features, a robust build, and creative flexibility, the OM SYSTEM Olympus OM-3 may be worth the investment. Its premium construction and specialized features cater to those who demand more from their photography gear.