Head to head · specs cited · drawn to scale
OM System OM-1 Mark II vs OM System OM-5
Every spec below is quoted from the makers' official pages — where a figure isn't published we say so rather than guess. Sizes are drawn at true relative scale from published dimensions, and the bag-fit row is computed against our measured bag catalog.
The 3 biggest published differences
- Burst — electronic: the OM-5 leads at Approx. 30fps (silent, H); Approx. 10fps (L) vs the OM-1 II's Pro Capture SH1 approx. 120fps; SH2 approx. 50fps (213-frame RAW buffer at 120fps).
- EVF resolution: the OM-1 II leads at Approx. 5.76M dots vs the OM-5's 2.360K dots.
- Battery life (CIPA): the OM-1 II leads at 520 shots (using BLX-1) vs the OM-5's 310 shots.
 OM-1 II Micro Four Thirds |  OM-5 Micro Four Thirds | |
|---|---|---|
| Overview | ||
| Type | Mirrorless | Mirrorless |
| Format | 4/3'' (Micro Four Thirds) | 4/3'' (Micro Four Thirds), 17.3 x 13.0mm |
| Lens mount | Micro Four Thirds | Micro Four Thirds |
| Released | —, not published | —, not published |
| Sensor & Image | ||
| Sensor type | Stacked BSI Live MOS | 4/3'' Live MOS sensor |
| Sensor size | 4/3'' (Micro Four Thirds) | 4/3'' (Micro Four Thirds), 17.3 x 13.0mm |
| Resolution (MP) | 20.4 | 20.4 Megapixels (effective); 21.8 Megapixels (full) |
| In-body stabilisation | Up to 8.5 EV steps (Sync IS) | Up to 7.5 EV steps (Sync IS); Up to 6.5 EV steps (Sensor shift) |
| ISO range | LOW - 102400 (native/manual range) | ISO LOW - 25600 |
| Autofocus & Speed | ||
| AF system | TTL phase difference detection + contrast detection, 1053 points / cross-type phase detection AF | TTL phase difference detection system, contrast detection system |
| Subject detection | Aircrafts, Birds, Bullet trains, Cats, Dogs, Formula cars, Helicopters, Human, Motorcycles, Rally cars, Standard trains, Steam locomotives | 121 points (all cross type); Eye Detect AF; predictive AF |
| Burst — mechanical | Approx. 10fps | Approx. 10fps (H); 6fps (L) |
| Burst — electronic | Pro Capture SH1 approx. 120fps; SH2 approx. 50fps (213-frame RAW buffer at 120fps) | Approx. 30fps (silent, H); Approx. 10fps (L) |
| Video | ||
| Max video | 4096x2160 (C4K) / 3840x2160 (4K) 60p | 4096 x 2160 (C4K) / 24p; 3840 x 2160 (4K) / 30p |
| Codecs / sampling | MOV (MPEG-4AVC/H.264), MOV (HEVC/H.265) | MOV (MPEG-4AVC/H.264) |
| Recording limit | Unlimited | Up to card capacity |
| Viewfinder & Screen | ||
| EVF resolution | Approx. 5.76M dots | 2.360K dots |
| EVF magnification | Approx. 1.48x - 1.65x | Max. 1.37x with a 50mm lens |
| Rear screen | 3.0 inch Vari-angle Touch LCD, approx. 1.62M dots | 3.0'' (3:2), 1037K dots, Vari-angle LCD - Touch Panel |
| Body & Handling | ||
| Dimensions (W×H×D) | 134.8 × 91.6 × 72.7 mm | 125.3 × 85.2 × 49.7 mm |
| Weight (body) | 599 g | 414 g |
| Weather sealing | IP53 certified; freezeproof to -10°C | IP53 (operating temperature -10 - 40 C) |
| Shutter durability | 400,000 shots | —, not published |
| Power & Storage | ||
| Battery life (CIPA) | 520 shots (using BLX-1) | 310 shots |
| Battery | BLX-1 Lithium-Ion Battery | BLS-50 Lithium-Ion Battery |
| Card slots | SD Memory Card (SDHC, SDXC, UHS-I, UHS-II compatible) | Single SD (UHS-II compatible) |
| Connectivity | ||
| USB | USB 3 Type C | USB 2.0 High Speed |
| Wireless | Wi-Fi and Bluetooth | Wi-Fi and Bluetooth present |
| HDMI | Micro connector (Type D) | Micro connector (Type D) |
| Price | ||
| Launch price | $1,999.99 (body, as listed) | —, not published |
| Size, to scale | ||
Front view, drawn at the same scale from each maker's published W×H (mm). | ||
| Smallest bag that fits | ||
| Body + standard zoom | Think Tank Mirrorless Mover 20 V2 Fits body only · View at B&H Photo Video | Think Tank Mirrorless Mover 20 V2 Fits body only · View at B&H Photo Video |
Sources
“4/3'' Stacked BSI Live MOS sensor, 20.4 Megapixels effective; Up to 8.5 EV steps image stabilization; 1053 points / cross-type phase detection AF; Pro Capture SH1 Approx. 120fps; From $1,999.99”
“4/3'' Live MOS sensor, 20.4 Megapixels effective, 4:3 / 17.3 x 13.0mm; Sensor shift, Up to 7.5 EV steps Sync IS; TTL phase difference detection system, contrast detection system, 121 points; EVF 2.360K dots, Max. 1.37x with a 50mm lens; BLS-50 Lithium-Ion Battery, 310 shots”
Spec values are the manufacturers' published figures, compared factually — we don't rank cameras. Fit verdicts are planning estimates from published interior dimensions, not guarantees. See methodology.
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