Based on our overall comparison score, OM System OM-1 Mark II rates higher at 73/100 versus 65/100 for Sony A1 — a 8-point lead. OM System OM-1 Mark II is the stronger overall pick, though the right choice still depends on which specs matter most to you; the full spec table above breaks down every difference.
OM System OM-1 Mark II vs Sony A1
Verdict
Our overall take, at a glance
Key takeaways
- Sony A1 and OM System OM-1 Mark II are closely matched overall (within 2 points).
- Sony A1 stands out on Sensor Size: Full Frame, Sensor Megapixels: 50.1 MP, Sensor ISO Max: 32,000.
- OM System OM-1 Mark II counters with Autofocus AF Points: 1,053, Performance Burst Speed (electronic): 120, Display & Viewfinder LCD Resolution: 1,620,000.
- Best value: OM System OM-1 Mark II (from $2,398) — the strongest score-per-dollar of the two.
Sony A1 and OM System OM-1 Mark II are closely matched
Sony A1
67
OM System OM-1 Mark II
65
Where Sony A1 stands out
- Sensor Size: Full Frame
- Sensor Megapixels: 50.1 MP
- Sensor ISO Max: 32,000
Where OM System OM-1 Mark II stands out
- Autofocus AF Points: 1,053
- Performance Burst Speed (electronic): 120
- Display & Viewfinder LCD Resolution: 1,620,000
In-depth analysisAI
AI-generated from the cited sources — may be incomplete or inaccurate; verify important details before deciding · generated Jun 2026.
OM System OM-1 Mark II
The OM System OM-1 Mark II is an incremental update to the brand's flagship Micro Four Thirds mirrorless camera, tailored for wildlife, action, and outdoor photographers. Powered by the TruePic X image processor and a 20.4-megapixel stacked BSI Live MOS sensor, this model maintains a highly compact form factor while introducing key hardware and system refinements. It focuses on expanding memory capacity and enhancing computational photography features over its predecessor.
Best for Wildlife and action photography requiring fast burst rates and deep buffers to cBest for Landscape photography in unpredictable weather without the burden of physical ne
Pros
- Doubled buffer memory allows for much longer high-speed continuous shooting sequences.
- Advanced built-in computational options, including Live ND and a new Graduated ND filter simulation.
- Highly durable construction with IP53-certified weather sealing for reliable outdoor use.
- Upgraded autofocus tracking capabilities and improved in-body image stabilization.
Cons
- Highly incremental update over the original model, with few physical hardware redesigns.
- Sensor resolution remains limited to 20.4 megapixels.
Sony A1
The Sony A1 is a professional mirrorless interchangeable-lens camera designed around a high-performance full-frame sensor. Built for demanding media creators, it unifies fast electronic shutter capabilities, sophisticated autofocus, and flexible recording formats into a highly adaptable body.
Best for High-speed sports and action photographyBest for Hybrid professional photo and video production
Pros
- Electronic shutter capability that supports flash synchronization
- Lossless compressed raw formats that balance image quality with file size
- Advanced autofocus tracking suitable for capturing fast-moving subjects
Cons
- Substantial financial investment required for the camera body and professional-tier lenses
Value for Money
Which is the better deal for the price
Pre-filled with launch prices where known — enter today's price for an up-to-date check. Use the same currency for both.
OM System OM-1 Mark II
Sony A1
Physical Comparison
Weigh them up, then compare real dimensions in 3D
OM System OM-1 Mark IISony A1
Sony A1 is 138 g (23%) heavier than OM System OM-1 Mark II.
Review Videos
Hand-picked expert reviews for each product
Detailed Specifications
The full spec sheet, side by side
Frequently Asked Questions
Common questions about OM System OM-1 Mark II vs Sony A1 comparison
OM System OM-1 Mark II and Sony A1 are compared side by side above across every spec in the cameras category — including performance, features and design — each scored 0–100 so you can see exactly where one leads the other. Our overall scores are 73/100 for OM System OM-1 Mark II and 65/100 for Sony A1.
At launch, OM System OM-1 Mark II was the more affordable option ($2398) versus Sony A1 ($6499). Weigh that against the overall scores (73/100 vs 65/100) and the value-for-money meter above to judge whether the higher-rated model justifies its price for your needs. Current retail prices vary — check the retailer.
If you want the higher-rated cameras option overall, OM System OM-1 Mark II (73/100) edges out Sony A1 (65/100). But if Sony A1 is cheaper or stronger on the specific specs you care about, it can still be the better buy — use the spec table and strengths profile above to decide.