Olympus OM-D E-M1 Mark III
Real Sensor Data
- Brand
- Olympus
- Sensor Format
- Micro Four Thirds
- Resolution
- 20.4 MP
- Pixel Pitch
- 3.32 microns
- Circle of Confusion
- 0.0144 mm
- Crop Factor
- 2.00x
- Announced
- 2020
Released in 2020, the E-M1 Mark III was among the last flagship cameras to carry the Olympus name before the brand's camera division was sold and relaunched as OM System — its 20.4-megapixel sensor and core feature set carried forward largely unchanged into the OM System OM-1's predecessor generation.
Olympus OM-D E-M1 Mark III sensor specs
- Sensor
- Micro Four Thirds
- Resolution
- 20.4 MP
- Pixel dimensions
- 5,215 × 3,912 px
- Aspect ratio
- 4:3
- Pixel pitch
- 3.32 µm
- Crop factor
- 2.00x
- Circle of confusion
- 0.0144 mm
Micro Four Thirds sensor · DoF & Hyperfocal Calculator · Astro 500/NPF Calculator
It also included genuinely strong in-body stabilization ratings that, combined with Micro Four Thirds telephoto lenses' smaller size and weight, made handheld wildlife and birding photography meaningfully more practical than with comparable full-frame telephoto setups of similar focal-length reach. Its Live Composite and Live ND computational modes, both inherited from earlier Olympus generations, remain genuinely distinctive features still not matched by most competing camera systems today.
Olympus also gave the E-M1 Mark III a genuinely deep buffer for its era, letting it sustain long continuous-shooting bursts of wildlife or sports action without stalling mid-sequence.
See these numbers used live in the DoF & Hyperfocal Calculator by selecting the Micro Four Thirds sensor format.
Frequently Asked Questions
Is the E-M1 Mark III still worth buying given the Olympus-to-OM System brand transition?
Its sensor specs and calculator figures remain fully accurate regardless of the brand it's badged under, and it's typically available at a meaningfully lower secondhand price than the newer OM-1 while sharing much of the same core feature set, a genuine value consideration for budget-conscious Micro Four Thirds shooters buying used gear.