Sigma fpvs FX3

GearFrame · Updated March 2026

Sigma Sigma fp Sigma Sigma fp (2019) Starting from £1499 new Best for Creative filmmakers & experimental photographers View Sigma fp
VS
Sony FX3 Sony FX3 (2021) Starting from £3799 new Best for Professional video, documentary & cinematic filmmaking View FX3

GearScore™ Verdict — Which should you buy?

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.

Professional Video, Documentary & Cinematic Filmmaking — FX3 (2021): The definitive run-and-gun cinema camera — A7S III sensor quality in a body built specifically for video professionals.

↓ Full specifications below

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

FX3 (2021)

  • Professional videographers and filmmakers who need cinema-quality colour science in a compact body
  • Documentary and run-and-gun shooters who need 4K/120p and built-in XLR audio
  • Sony A7S III owners who want a purpose-built video body alongside their stills camera
  • Gimbal and drone operators who need a compact full-frame cinema camera

Quick take: The sigma fp has the highest resolution at 25mp; the sigma fp is the most affordable; only the fx3 is weather sealed. Scroll down for the full spec breakdown.

Full specifications

Specification Sigma fp (2019)FX3 (2021)
Price £1,499 £3,799
Sensor 24.6MP full-frame Bayer CMOS 12.1MP full-frame BSI Exmor R CMOS (same as A7S III)
Resolution 24.6MP 12.1MP
Video 12-bit Cinema DNG RAW, 4K/24p, 1080p/120p 4K/120p, 4K/60p 10-bit, 12-bit RAW output, S-Log3, S-Cinetone
Autofocus Contrast-detect AF with face/eye detection Real-time tracking with subject recognition (human, animal)
Stabilisation None (lens-based only) 5-axis IBIS — 5 stops
Burst Rate 18fps electronic 10fps mechanical, 10fps electronic
Battery Life 200 shots (CIPA) ~640 shots (CIPA)
Weight 422g body only 715g body only (with XLR handle)
Dimensions 112.6 × 69.9 × 45.3mm 129.7 × 78.0 × 84.5mm
Weather Sealed No Yes
Viewfinder None None — monitor/external EVF use only
Screen 3.15" fixed touchscreen 3.0" touchscreen, fully articulating
Mount Leica L-mount Sony FE mount (full-frame E-mount)
Memory Cards Single SD UHS-II + CFexpress Type B (via adapter) Dual CFexpress Type A / SD UHS-II slots
Connectivity USB-C 3.1, Wi-Fi, Bluetooth USB-C (10Gbps), full-size HDMI, XLR via handle, Bluetooth, Wi-Fi
Genre Sigma fpFX3
Vlogging & Video
9.0
9.0
Street
9.0
4.0
Travel
9.0
4.0
Portrait
7.0
7.0
Landscape
7.0
Sports & Action
4.0
Low Light
9.0
Wedding
7.0
⚡ Compare specs side by side Sigma fp prices → FX3 prices →

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