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Micro Four Thirds (MFT or M4/3) is an open standard for mirrorless cameras with interchangeable lenses. It defines how compatible cameras and lenses connect, including the mount and the image circle for a 4/3-type sensor. It is a camera system—not a camera model or a lens brand.
What does “Four Thirds” mean?
The name refers to a sensor-format category. A 4/3-type sensor has a diagonal about half the length of a 35 mm sensor’s diagonal, according to the Four Thirds Consortium FAQ. The exact dimensions can vary by camera: for example, OM System lists an imaging area of 17.4 mm × 13.0 mm and a 4:3 aspect ratio for the camera on its specifications page.
How does Micro Four Thirds relate to Four Thirds?
Micro Four Thirds extends the earlier Four Thirds system for mirrorless cameras while retaining the same sensor-size category. They are related, but they are distinct systems: a Four Thirds DSLR lens can be used on a Micro Four Thirds camera with a mount adapter. That is different from using a native Micro Four Thirds lens.
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The system is designed to let camera bodies and lenses from different manufacturers be combined. Basic functions such as automatic exposure and autofocus are standardized, but that does not guarantee every feature on every camera-and-lens pairing. The official camera finder notes that functionality may be limited; check the camera and lens manufacturers’ specifications for the exact combination.
#1 Best Overall
- Multi coated lens: A multi coated lens element reduces ghost and flare to deliver high optical performance (12 elements in 9 groups, [1 UHR lens and 2 aspherical lenses])
- Near silent focusing for video and still: inner focus system enables excellent resolution and contrast from full life size magnification to infinity; stepping motor makes focusing action smooth and near silent for use in video and photo recording
- Lumia optical image stabilization: Panasonic Mega O. I. S. Makes it easy to shoot super clear shots even in low lit situations by suppressing the blur caused by a hand movement
- Medium zoom lens: A 45 150mm (35mm camera equivalent: 90 300mm) focal length with F4. 0 5. 6 ASPH provides a versatile medium zoom range of daily situations
- Seven aperture blade construction: The lens’ seven aperture blades produce an attractive smoothness in out of focus areas, even when shooting at large aperture
What does the 35 mm equivalent focal length mean?
Because the sensor is smaller than a 35 mm sensor, the same lens gives a narrower angle of view. The system FAQ says that roughly twice the focal length marked on a Micro Four Thirds lens corresponds to its 35 mm equivalent focal length. This is an angle-of-view comparison: the lens’s actual focal length does not change.
What is the system intended to offer?
The system’s overview describes its goal as balancing image quality with compactness and lightness. Those are the organization’s stated aims, not a guarantee that every Micro Four Thirds camera or lens is smaller or lighter than every alternative. Actual size, weight, and performance depend on the specific equipment.
Rank #2
- Micro Four Thirds a versatile MFT 25 millimeter lens with a natural viewing angle Suitable for a wide variety of occasions (35 millimeter camera equivalent: 50 millimeter)
- F1.7 brightness beautiful background bokeh effect from its large diameter F1.7 aperture
- Super lightweight compact at only 125G/ 2.05 inches Length, Lens construction 8 elements in 7 groups (2 aspherical lenses, 1 UHR lens)
- Photo and video Hybrid photography enabled for both photo and HD video recording with quiet and smooth fast action stepping motor focusing
- Angle of View: 47°
For the standard’s overview, see the official Micro Four Thirds system page.
Quick Recap
Best Value
- Micro Four Thirds Lens for Professional Photographers and Videographers: High descriptive performance lens provides smooth, beautiful bokeh in photo and video; works with all Micro Four Thirds cameras
- Great for Photo Shooting and Video Recording: Ultra-wide lens for beautiful bokeh with exceptionally short focusing distance of 0.095m with an outstanding magnification ratio of 0.25x (35mm camera equivalent: 0.5x)
- Lightweight, Rugged Design: Compact, portable lens is easy to carry all day in comfort; dust/splash*/freeze-resistant design withstands heavy field use under harsh conditions
- Adheres to Stringent LEICA Standards: LEICA Mirrorless Micro Four Thirds lenses provide the ultimate in optical quality and performance, meeting strict quality standards
- Video Support: Excels in video recording, with minimal focus breathing and smooth aperture control
Rank #4
- 3.75x zoom lens
- Macro focus range: 90 centimeter, focal length: 40 to 150 millimeter
- Lightweight, portable design, 80 to 300 millimeter equivalent field of view
- Nearly silent movie and still compatible auto focus, perfect choice for second lens
- Great for portraits and sports; Maximum reproduction ratio:- 1:6.25
Rank #3
- Ultra-Lightweight & Compact: Weighs only 133g, making it the perfect "Everyday Carry" prime lens for travel and street photography.
- Bright f/1.8 Large Aperture: Delivers beautiful background bokeh and exceptional performance in low-light environments.
- Fast & Silent STM Auto-Focus: Equipped with a stepping motor for quick, quiet, and precise focusing—ideal for both stills and video.
- Excellent Performance: Delivers sharp, reliable results across various scenarios, from portraits and landscapes to close-up lifestyle shots.
- Premium All-Metal Build: Features a durable metal barrel and mount, offering a high-end tactile feel and long-lasting reliability. Metal square lens hood included.
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