Olympus E-M1 III vs Sony A7 III

Olympus E-M1 III was introduced to market in February 2020 and Sony A7 III was launched in February 2018. There is 23 months difference between E-M1 III and A7 III so we don't expect to see a huge technology difference between these two cameras but it would still give an advantage to younger E-M1 III, especially in sensor tech.

 

Olympus E-M1 III Key Specs

  • Announcement Date: 2020-02-11
  • 20MP - Four Thirds CMOS Sensor
  • No Anti-aliasing (AA) filter
  • ISO 200 - 25600 ( expands to 64)
  • Micro Four Thirds Mount
  • Sensor-shift Image Stabilization
  • 3" Fully Articulated Screen
  • 2360k dot Electronic viewfinder
  • 60.0fps continuous shooting
  • 4K (DCI) - 3840 x 2160 video resolution
  • Built-in Wireless
  • 580g. 134 x 91 x 69 mm
  • Weather Sealed Body
  • Replaced Olympus OM-D E-M1 Mark II

 

Sony A7 III Key Specs

  • Announcement Date: 2018-02-27
  • 24MP - Full frame BSI-CMOS Sensor
  • ISO 100 - 51200 ( expands to 50 - 204800)
  • Sony E Mount
  • Sensor-shift Image Stabilization
  • 3 Tilting Screen
  • 2360k dot Electronic viewfinder
  • 10.0fps continuous shooting
  • 4K (UHD) - 3840 x 2160 video resolution
  • 120fps High-Speed Video
  • Built-in Wireless
  • 650g. 127 x 96 x 74 mm
  • Weather Sealed Body
  • Replaced Sony Alpha A7 II