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  3. /OM System OM-3 vs Sony A1

OM System OM-3 vs Sony A1

Verdict

Our overall take, at a glance

Key takeaways

  • Sony A1 and OM System OM-3 are closely matched overall (within 3 points).
  • Sony A1 stands out on Sensor Size: Full Frame, Sensor Megapixels: 50.1 MP, Max Video Resolution: 7680 × 4320 px.
  • OM System OM-3 counters with Sensor ISO Max: 102,400, Autofocus AF Points: 1,053, Performance Burst Speed (electronic): 120.
  • Best value: OM System OM-3 (from $1,999) — the strongest score-per-dollar of the two.
Sony A1 and OM System OM-3 are closely matched
Sony A1
62
OM System OM-3
59
Where Sony A1 stands out
  • Sensor Size: Full Frame
  • Sensor Megapixels: 50.1 MP
  • Max Video Resolution: 7680 × 4320 px
Where OM System OM-3 stands out
  • Sensor ISO Max: 102,400
  • Autofocus AF Points: 1,053
  • Performance Burst Speed (electronic): 120

Strengths Profile

Bigger shape = stronger. Whoever reaches further wins that category.

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-3

AI analysis isn't ready yet

We haven't generated an in-depth write-up for OM System OM-3 yet. The specs, scores and strengths profile above still cover it — check back later for the AI summary.

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
Source
  • Wikidata: Sony α1Establishes the device classification as a professional mirrorless camera featuring a full-frame sensor.
  • A1 - Wikipedia
Video — reviews used (3)

Details hands-on features including electronic shutter flash synchronization, lossless compressed raw capabilities, and performance in action scenarios.

Generated Jun 30, 2026

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-3

Check Price on Amazon

Sony A1

Check Price on Amazon

Physical Comparison

Weigh them up, then compare real dimensions in 3D

496 g737 g
OM System OM-3Sony A1

Sony A1 is 241 g (49%) heavier than OM System OM-3.

Review Videos

Hand-picked expert reviews for each product

Detailed Specifications

The full spec sheet, side by side

Sensor

Feature
OM System OM-3
Sony A1
Sensor Type
Stacked BSI Live MOS
Full-frame Exmor RS stacked CMOS
Sensor Size
Megapixels
20.4 MP
50.1 MP
Image Stabilization (IBIS)
Yes
Yes
ISO Min
80
100
ISO Max
102,400
32,000

Autofocus

Feature
OM System OM-3
Sony A1
AF Points
1,053
759
AF System
TTL Phase Detection AF (cross-type) with Contrast Detection
Fast Hybrid AF with real-time tracking

Video

Feature
OM System OM-3
Sony A1
Max Video Resolution
4096 × 2160 px
7680 × 4320 px
Max Video Frame Rate
60 Hz
120 Hz
Video Bit Depth
10
10
Log Profile
Yes
Yes

Performance

Feature
OM System OM-3
Sony A1
Burst Speed (mechanical)
6
10
Burst Speed (electronic)
120
30

Display & Viewfinder

Feature
OM System OM-3
Sony A1
LCD Size
3 in
3 in
LCD Resolution
1,620,000
1,440,000
Viewfinder Resolution
2,360,000
9,437,184
Touchscreen
Yes
Yes
Articulating Screen
Yes
Yes

Connectivity & Storage

Feature
OM System OM-3
Sony A1
Lens Mount
Micro Four Thirds
Sony E
Dual Card Slots
No
Yes
Weather Sealing
Yes
Yes
Wi-Fi
Yes
Yes
Bluetooth
Yes
Yes

Physical & Battery

Feature
OM System OM-3
Sony A1
Weight
496 g
737 g
Battery Life (CIPA shots)
590
530
Release Date
March 1, 2025
January 26, 2021
Dimensions
13.93 × 8.89 × 4.58 cm
12.89 × 9.69 × 8.08 cm

Specification Note

Specifications are compiled from official manufacturer data and other reliable internet sources. Some features may vary by region or model configuration.

Frequently Asked Questions

Common questions about OM System OM-3 vs Sony A1 comparison

Based on our overall comparison score, OM System OM-3 rates higher at 70/100 versus 65/100 for Sony A1 — a 5-point lead. OM System OM-3 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-3 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 70/100 for OM System OM-3 and 65/100 for Sony A1.
At launch, OM System OM-3 was the more affordable option ($1999) versus Sony A1 ($6499). Weigh that against the overall scores (70/100 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-3 (70/100) 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.
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