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When choosing a mirrorless camera, autofocus speed is a critical factor for many photographers. The Fujifilm X-S20 and Olympus OM-D E-M5 Mark III are popular models, each with distinct autofocus capabilities. This article compares their autofocus performance to help you make an informed decision.
Overview of the Cameras
The Fujifilm X-S20 is known for its advanced autofocus system, leveraging phase detection and deep learning algorithms. It offers fast and accurate focusing, especially in dynamic shooting conditions. The Olympus OM-D E-M5 Mark III, while slightly older, is praised for its reliable autofocus, particularly in still photography and video modes.
Autofocus System Specifications
The Fujifilm X-S20 features a hybrid autofocus system with 425 phase detection points covering most of the frame. It employs machine learning to recognize faces, eyes, and subjects, enhancing tracking performance. The Olympus OM-D E-M5 Mark III uses a contrast-detection autofocus system with 121 points, complemented by on-sensor phase detection for improved speed.
Fujifilm X-S20 Autofocus Features
- 425 phase detection points
- Deep learning AI for subject recognition
- Fast face and eye detection
- High-speed continuous AF at 20 fps
Olympus OM-D E-M5 Mark III Autofocus Features
- Contrast-detection with on-sensor phase detection
- 121 AF points
- Face and eye detection
- Silent autofocus for quiet shooting
Performance in Real-World Testing
In practical tests, the Fujifilm X-S20 demonstrated rapid autofocus acquisition, especially in well-lit conditions. Its subject tracking was notably accurate with moving subjects, making it suitable for sports and wildlife photography. The Olympus OM-D E-M5 Mark III, while slightly slower, still provided reliable focus, particularly in static scenes and controlled environments.
Under low-light conditions, the X-S20 maintained impressive autofocus speed, aided by its AI capabilities. The E-M5 Mark III’s contrast-detection system showed some lag but remained effective for everyday photography. Video autofocus performance was also evaluated, with the X-S20 offering smoother and more consistent focus transitions.
Autofocus Speed Benchmarks
Benchmark tests measured the time to focus on a stationary subject and to reacquire focus on a moving subject. The Fujifilm X-S20 averaged around 0.2 seconds to lock focus, while the Olympus OM-D E-M5 Mark III took approximately 0.4 seconds. These results highlight the X-S20’s superior speed, especially in dynamic scenarios.
Conclusion
Both the Fujifilm X-S20 and Olympus OM-D E-M5 Mark III offer capable autofocus systems, but they excel in different areas. The X-S20’s advanced hybrid AF with AI recognition provides faster and more accurate focusing, ideal for fast-paced photography. The E-M5 Mark III remains a solid choice for users prioritizing reliability and quiet operation in a slightly more affordable package.
Ultimately, your choice should depend on your specific photography needs and shooting conditions. For the fastest autofocus performance, the Fujifilm X-S20 is the preferred option, but the Olympus OM-D E-M5 Mark III still offers dependable autofocus for everyday shooting.