OM System OM-5 vs Ricoh GR IIIx
Verdict: The OM System OM-5 outperforms the Ricoh GR IIIx in versatility and stabilization per RTINGS and DPReview tests, with 7.5-stop IBIS versus the GR IIIx's 4 stops. The GR IIIx excels in portability with its 262g weight and APS-C sensor but lacks the OM-5's weather sealing and 4K video. OM-5 is the stronger all-rounder for most photographers needing flexibility.
Winner: OM System OM-5
OM System OM-5: 8.2/10
Ricoh GR IIIx: 7.1/10
Spec-by-spec comparison
| OM System OM-5 | Ricoh GR IIIx | |
|---|---|---|
| Sensor Size | 20.4MP Four Thirds Live MOS | 24.2MP APS-C CMOS |
| Lens Mount | Micro Four Thirds | Fixed 40mm equiv f/2.8 |
| Weight | 414g body only | 262g with battery |
| Video Resolution | 4K 30p | 1080p 60p |
OM System OM-5
What works
- Weather-sealed body with 5-axis IBIS up to 7.5 stops
- Interchangeable lenses for versatility across focal lengths
- Computational photography features like Live ND and Starry Sky AF
What doesn't
- Smaller sensor limits low-light performance vs full-frame
- EVF resolution only 2.36M dots
Ricoh GR IIIx
What works
- Pocketable size with APS-C sensor
- Sharp 40mm equivalent lens with macro mode
- In-body stabilization and quick snap focus
What doesn't
- Fixed lens limits framing options
- No weather sealing or EVF
Bottom line
Our pick: OM System OM-5.
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