Decision tools · Compare

FX3 vs Sony FX5

Quick take: The Sony FX5 has the highest resolution at 17MP; the FX3 is the most affordable.

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?

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

Who should buy what
FX3 (2021)
is the right camera for you if…
  • 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
Full specificationsthe better value in each row is highlighted
Specification FX3Sony · 2021Sony FX5Sony · 2026
Price £3,579Best£4,699
Sensor 12.1MP full-frame BSI Exmor R CMOS (same as A7S III)16.6MP full-frame stacked Exmor RS CMOS
Resolution 12.1MP16.6MPBest
Video 4K/120p, 4K/60p 10-bit, 12-bit RAW output, S-Log3, S-Cinetone5K/60p open-gate, 4K/120p, internal RAW/X-OCN, 10-bit Log, triple base ISO
Autofocus Real-time tracking with subject recognition (human, animal)AI-powered hybrid phase-detect AF (759 points) with subject tracking
Stabilisation 5-axis IBIS — 5 stopsIBIS with Dynamic Active Mode
Burst Rate 10fps mechanical, 10fps electronic10fps
Battery Life ~640 shots (CIPA)Best~105 min actual recording, ~170 min continuous (LCD)
Weight 715g (body only)Best734g (with battery and card)
Dimensions 129.7 × 78.0 × 84.5mm—
Weather Sealed YesYes
Viewfinder None — monitor/external EVF use onlyOptional detachable EVF (DVF-EL1), OLED
Screen 3.0" touchscreen, fully articulatingFully articulating touchscreen (4-axis arm)
Mount Sony FE mount (full-frame E-mount)Sony E-mount
Memory Cards Dual CFexpress Type A / SD UHS-II slotsCFexpress Type A + SDXC (dual)
Connectivity USB-C (10Gbps), full-size HDMI, XLR via handle, Bluetooth, Wi-FiUSB-C, full-size HDMI, Wi-Fi, Bluetooth

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
FX3
Sony FX5
Portrait
5.7/10
6.9/10
Street
4.3/10
5.3/10
Travel
5.6/10
6.2/10
Wedding & Events
6.0/10
7.0/10
Vlogging & Video
6.2/10
6.1/10
Filmmaking
9.1/10
8.7/10
Documentary
8.0/10
8.3/10
Sports & Action
5.5/10
6.8/10
Landscape
4.7/10
5.1/10
Wildlife
5.8/10
6.8/10
Casual
4.8/10
5.1/10
Food
6.7/10
7.4/10
Macro
5.5/10
5.2/10
Architecture
5.2/10
6.1/10
Astrophotography
6.7/10
6.7/10

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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