Decision tools · Compare

OM-1 Mark II vs A6100

Quick take: The A6100 has the highest resolution at 24MP; the A6100 is the most affordable; only the OM-1 Mark II is weather sealed.

16 specs side by side·15 genres scored·UK prices from Wex Photo Video and Clifton Cameras

How to read this page. Highlighted cells win that row on the spec alone. Genre scores are the engine's base scores (enthusiast, photo and video); Camera Match re-weights them for your level and priorities. Price buttons are affiliate links; the price you pay is the same.

Price buttons are affiliate links — GearFrame may earn a commission at no extra cost to you. It never affects a score. Learn more

Verdictwhich should you buy?

OM-1 Mark II — Wildlife, Birds & Outdoor Sports: OM System's most capable camera — 120fps AF burst, AI subject detection, and IP53 weather sealing make it the best-value pro wildlife camera.

A6100 — Beginner, Family, Travel: Best autofocus in its class for the price.

Who should buy what
OM-1 Mark II (2024)
is the right camera for you if…
  • Wildlife and bird photographers who need the best subject tracking in MFT
  • Sports photographers who want weather sealing and 50fps burst
  • OM-1 owners looking for a meaningful autofocus upgrade
  • Professionals who need pro-grade weather sealing in the lightest possible system
A6100 (2019)
is the right camera for you if…
  • First-time mirrorless buyers who want solid AF
  • Families stepping up from a smartphone
Full specificationsthe better value in each row is highlighted
Specification OM-1 Mark IIOM System · 2024A6100Sony · 2019
Price £2,049£649Best
Sensor 20MP Micro Four Thirds Live MOSAPS-C Exmor CMOS
Resolution 20.0MP24.2MPBest
Video 4K/60p, 1080p/240p, 4K HLG4K 30fps
Autofocus AI subject detection AF (birds, animals, motorsport)425-point phase-detect, real-time tracking
Stabilisation 8.5-stop IBISNo stabilisation
Burst Rate 120fps with AF trackingBest11fps
Battery Life 520 shots (CIPA)Best420 shots (CIPA)
Weight 599g (body only)396g (body only)Best
Dimensions 134.8 × 91.6 × 72.7mm119.9 × 66.9 × 59.4mm
Weather Sealed YesBestNot weather sealed
Viewfinder 0.83" OLED EVF, 5.76M dots, 120fpsEVF 0.39" 1.44M-dot
Screen 3.0" fully articulating touchscreen3.0" tilting touchscreen, 921k-dot
Mount Micro Four ThirdsSony E-Mount
Memory Cards Dual SD UHS-IISD UHS-I / Memory Stick
Connectivity USB-C, Wi-Fi, BluetoothWi-Fi, Bluetooth 4.1, Micro USB, Micro HDMI

Wins the row — price, resolution, burst, battery, weight and sealing are compared; text specs aren't ranked.

How they score by genreengine base scores out of 10
Genre
OM-1 Mark II
A6100
Portrait
7.6/10
6.7/10
Street
6.6/10
7.3/10
Travel
6.6/10
6.4/10
Wedding & Events
7.9/10
5.1/10
Vlogging & Video
6.4/10
6.2/10
Filmmaking
6.8/10
4.9/10
Documentary
7.9/10
5.2/10
Sports & Action
9.3/10
6.5/10
Landscape
6.1/10
4.9/10
Wildlife
9.1/10
6.9/10
Casual
5.5/10
6.4/10
Food
7.4/10
6.2/10
Macro
8.4/10
5.2/10
Architecture
6.3/10
5.5/10
Astrophotography
6.0/10
6.0/10

Scores come from the same engine as Camera Match: verified specifications weighted by what each genre needs, with documented adjustments. The product page and this table show the enthusiast base score. See how scores are calculated →

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