OM-1vs Sigma fp

GearFrame · Updated March 2026

OM System OM-1 OM System OM-1 (2022) Starting from £1299 new Best for Wildlife, sport, outdoor View OM-1
VS
Sigma Sigma fp Sigma Sigma fp (2019) Starting from £1499 new Best for Creative filmmakers & experimental photographers View Sigma fp

GearScore™ Verdict — Which should you buy?

Wildlife, Sport, Outdoor — OM-1 (2022): OM System's statement camera — class-leading weather sealing and the best IBIS in the business.

Creative Filmmakers & Experimental Photographers — Sigma fp (2019): The smallest full-frame camera in the world — Cinema DNG RAW and L-mount flexibility in a pocket-sized body that rewards creative shooters.

↓ Full specifications below

OM-1 (2022)

  • Wildlife and bird photographers who need fast burst and pro weather sealing
  • Outdoor photographers who work in challenging conditions

Sigma fp (2019)

  • Filmmakers who want the world's smallest full-frame camera as a B or C camera
  • Experimental photographers who want to build a unique, modular setup
  • L-mount photographers who want an ultra-compact full-frame body
  • Anyone who wants a conversation-starting camera that delivers serious results

Quick take: The sigma fp has the highest resolution at 25mp; the om-1 is the most affordable; only the om-1 is weather sealed. Scroll down for the full spec breakdown.

Full specifications

Specification OM-1 (2022)Sigma fp (2019)
Price £1,299 £1,499
Sensor Micro Four Thirds Live MOS stacked BSI 24.6MP full-frame Bayer CMOS
Resolution 20.4MP 24.6MP
Video 4K 60fps 10-bit 12-bit Cinema DNG RAW, 4K/24p, 1080p/120p
Autofocus 1053-point cross-type phase-detect, AI subject recognition Contrast-detect AF with face/eye detection
Stabilisation 5-axis IBIS, 7.0 stops (8 stops with sync IS) None (lens-based only)
Burst Rate 10fps mechanical, 50fps electronic, 120fps Pro Capture 18fps electronic
Battery Life 520 shots (CIPA) 200 shots (CIPA)
Weight 599g (body only) 422g body only
Dimensions 134.8 × 91.6 × 72.7mm 112.6 × 69.9 × 45.3mm
Weather Sealed Yes No
Viewfinder EVF 0.83× 5.76M-dot None
Screen 3.0" fully articulating touchscreen, 1.62M-dot 3.15" fixed touchscreen
Mount Micro Four Thirds Leica L-mount
Memory Cards 2× SD UHS-II / CFexpress Type B Single SD UHS-II + CFexpress Type B (via adapter)
Connectivity Wi-Fi 5GHz, Bluetooth 5.0, USB-C 3.1, HDMI, 3.5mm mic/headphone USB-C 3.1, Wi-Fi, Bluetooth
Genre OM-1Sigma fp
Vlogging & Video
9.0
Street
9.0
Travel
9.0
Portrait
7.0
Landscape
7.0
Sports & Action
4.0
⚡ Compare specs side by side OM-1 prices → Sigma fp prices →

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