OM System OM-1 Mark II · with dual-battery kit
Micro Four Thirds · 2024
Sony A7S III · Body only
full-frame · 2020
Sony A7S III · Body only takes it — here’s why.
In our weighted Specdex score, OM System OM-1 Mark II · with dual-battery kit lands at 87 and Sony A7S III · Body only at 91. That puts Sony A7S III · Body only ahead by 4 points — a narrow margin driven mostly by its strengths in the categories below.
Pick OM System OM-1 Mark II · with dual-battery kit if…
- ✓Current-gen AF system
- ✓Proven lens ecosystem
- ✓Strong video + stills balance
Pick Sony A7S III · Body only if…
- ✓Current-gen AF system
- ✓Proven lens ecosystem
- ✓Strong video + stills balance
Winner by scenario
Derived from the sub-score breakdown · not a separate testPhoto
Sony A7S III · Body onlyCompared on the photo sub-score
Sony A7S III · Body only leads on photo (91 vs 87).
Autofocus
Sony A7S III · Body onlyCompared on the autofocus sub-score
Sony A7S III · Body only leads on autofocus (89 vs 85).
Ergonomics
TieCompared on the ergonomics sub-score
Effectively tied — neither pulls a 2-point weighted lead.
Value for money
OM System OM-1 Mark II · with dual-battery kitSpecdex score per dollar at MSRP
OM System OM-1 Mark II · with dual-battery kit more score per dollar ($2,549 vs $3,498).
Score breakdown
Specs side-by-side
| Spec | OM System OM-1 Mark II · with dual-battery kit | Sony A7S III · Body only |
|---|---|---|
| Format | Micro Four Thirds | full-frame |
| Release year | 2024 | 2020 |
OM System OM-1 Mark II · with dual-battery kit
- +Current-gen AF system
- +Proven lens ecosystem
- +Strong video + stills balance
- −Body price excludes lens
- −Heavy for travel (flagship)
- −Learning curve on menus
Sony A7S III · Body only
- +Current-gen AF system
- +Proven lens ecosystem
- +Strong video + stills balance
- −Body price excludes lens
- −Heavy for travel (flagship)
- −Learning curve on menus
FAQ: OM System OM-1 Mark II · with dual-battery kit vs Sony A7S III · Body only
Which is better, OM System OM-1 Mark II · with dual-battery kit or Sony A7S III · Body only? +
Sony A7S III · Body only scores 91 on our weighted rubric — ahead by 4. Your best pick depends on the sub-scores above.
Is OM System OM-1 Mark II · with dual-battery kit worth the price? +
At $2,549, OM System OM-1 Mark II · with dual-battery kit delivers a Specdex score of 87 — strongest in photo.
Is Sony A7S III · Body only worth the price? +
At $3,498, Sony A7S III · Body only delivers a Specdex score of 91 — strongest in photo.
Does OM System OM-1 Mark II · with dual-battery kit or Sony A7S III · Body only last longer? +
Based on our long-term update and support ratings, both ship with multi-year support. Battery and reliability scores are visible in the breakdown above.
Which is better for photo, OM System OM-1 Mark II · with dual-battery kit or Sony A7S III · Body only? +
Sony A7S III · Body only — leads on photo (91 vs 87). Compared on the photo sub-score.
Which is better for autofocus, OM System OM-1 Mark II · with dual-battery kit or Sony A7S III · Body only? +
Sony A7S III · Body only — leads on autofocus (89 vs 85). Compared on the autofocus sub-score.