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X-S10vs Pentax K-3 Mark III

GearFrame · Updated March 2026

Fujifilm X-S10 Fujifilm X-S10 (2020) Starting from £699 new Best for DSLR switchers, travel & vlogging View X-S10
VS
Pentax Pentax K-3 Mark III Pentax Pentax K-3 Mark III (2021) Starting from £1699 new Best for DSLR enthusiasts & outdoor photographers View Pentax K-3 Mark III

GearScore™ Verdict — Which should you buy?

Dslr Switchers, Travel & Vlogging — X-S10 (2020): The X-S10 brought IBIS and a fully articulating screen to Fujifilm's mid-range — a compelling DSLR replacement at a price that made Fujifilm accessible to a new audience.

Dslr Enthusiasts & Outdoor Photographers — Pentax K-3 Mark III (2021): The finest APS-C DSLR ever made — class-leading weather sealing, optical viewfinder, 5-axis IBIS, and extraordinary build for photographers committed to DSLR.

↓ Full specifications below

X-S10 (2020)

  • DSLR photographers switching to mirrorless who want familiar controls and a deep grip
  • Vloggers who want Fujifilm film simulations with a fully articulating screen
  • X-T30 or X-E4 owners who want IBIS and a more comfortable grip
  • Budget-conscious buyers who want X-T4 image quality at a lower price

Pentax K-3 Mark III (2021)

  • DSLR photographers who want the finest APS-C optical viewfinder experience
  • Outdoor and weather photographers who need robust all-weather sealing
  • Pentax lens owners who want to use their existing K-mount glass
  • Photographers who prefer optical viewfinders and refuse to switch to mirrorless

Quick take: The x-s10 has the highest resolution at 26mp; the x-s10 is the most affordable; only the pentax k-3 mark iii is weather sealed. Scroll down for the full spec breakdown.

Full specifications

Specification X-S10 (2020)Pentax K-3 Mark III (2021)
Price £699 £1,699
Sensor 26.1MP APS-C X-Trans CMOS 4 25.7MP APS-C BSI CMOS (AA-filterless)
Resolution 26.1MP 25.7MP
Video 4K/30p, 1080p/240p, F-Log support 4K/30p, 1080p/60p
Autofocus Phase-detect + contrast-detect hybrid, subject detection AF SAFOX 13 phase-detect, 101-point (25 cross-type)
Stabilisation IBIS — 5-axis, up to 6 stops 5.5-stop 5-axis IBIS (Shake Reduction III)
Burst Rate 8fps mechanical, 30fps electronic 12fps
Battery Life ~325 shots (CIPA) 800 shots (CIPA)
Weight 465g (with battery and card) 820g body only
Dimensions 126.0 × 85.1 × 65.4mm 134.5 × 103.5 × 73.5mm
Weather Sealed No Yes
Viewfinder EVF, 2.36M dots, 0.62× magnification Optical pentaprism, 100% coverage, 1.05× magnification
Screen 3.0" fully articulating touchscreen 3.2" tilting touchscreen
Mount Fujifilm X-mount Pentax KF-mount
Memory Cards Single SD UHS-I slot Dual SD UHS-II
Connectivity USB-C, Wi-Fi, Bluetooth, 3.5mm mic jack USB-C, Wi-Fi, Bluetooth
Genre X-S10Pentax K-3 Mark III
Travel
9.0
7.0
Vlogging & Video
9.0
4.0
Portrait
9.0
7.0
Street
7.0
Wildlife
7.0
9.0
Landscape
7.0
9.0
Sports & Action
9.0

GearScore™ suitability scores are based on aggregated purchaser reviews weighted by photography genre. See how scores are calculated →

⚡ Compare specs side by side X-S10 prices → Pentax K-3 Mark III prices →

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