Brands
Panasonic co-developed the Micro Four Thirds standard with Olympus in 2008. Their Lumix G series covers a wide range from compact travel cameras to professional video-focused bodies. Panasonic lenses carry the Leica DG branding for premium optics, made under license.
OM System is the brand formed after OM Digital Solutions acquired the imaging division of Olympus in 2021. They continue the OM-D camera line and M.Zuiko lens lineup. OM System cameras are known for strong IBIS performance and compact, weather-sealed build quality.
Olympus co-developed the Micro Four Thirds standard with Panasonic in 2008 and produced cameras under the Olympus name until 2021, when the imaging division was sold and rebranded as OM System. The OM-D and PEN camera lines were established under Olympus. Cameras sold before 2022 carry the Olympus name.
Blackmagic is an Australian company best known for professional video production hardware. Their Pocket Cinema Camera (BMPCC) line uses the M43 mount and targets filmmakers who need RAW video recording in a compact form factor. They do not make lenses.
Sigma is a Japanese optics company that manufactures lenses for multiple mounts including M43. Their Contemporary and Art lines offer high-quality primes and zooms at competitive prices. Sigma also makes cameras under the dp Quattro line but not for the M43 mount.
TTArtisan is a Chinese lens brand focused on manual focus primes with classic optical character. Their M43 lenses are compact, fully manual, and priced accessibly. They are popular for street photography and video work where manual focus is preferred.