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Pentax 17vs BF

GearFrame · Updated March 2026

Pentax Pentax 17 Pentax Pentax 17 (2024) Starting from £400 new Best for Film photography enthusiasts & diptych storytelling View Pentax 17
VS
Sigma BF Sigma BF (2025) Starting from £1799 new Best for Photographers who want to strip back every distraction View BF

GearScore™ Verdict — Which should you buy?

Film Photography Enthusiasts & Diptych Storytelling — Pentax 17 (2024): The best new film camera of the decade — manual controls, a sharp lens, and a half-frame format that doubles your roll and forces a new way of seeing.

Photographers Who Want To Strip Back Every Distraction — BF (2025): The most radical camera in years — no dials, no buttons, just a flat aluminium body and total creative minimalism.

↓ Full specifications below

BF (2025)

  • Photographers who find camera menus and dials a distraction from the creative process
  • L-mount system users who want the lightest, most minimal full-frame body available
  • Design enthusiasts who value the object quality and philosophy as much as the output
  • Sigma fp/fp L users ready for a more radical step toward minimal photography

Quick take: The pentax 17 is the most affordable; only the bf is weather sealed. Scroll down for the full spec breakdown.

Full specifications

Specification Pentax 17 (2024)BF (2025)
Price £400 £1,799
Sensor 35mm half-frame (18 × 24mm) 24MP full-frame BSI CMOS
Resolution 24.0MP
Video N/A — film camera 4K/30p, 1080p/60p
Autofocus Zone focus (0.35m / 1m / 3m / ∞) Phase-detect AF — face and eye detection
Stabilisation N/A — film camera 5-axis IBIS — 7 stops
Burst Rate Manual wind-on 9fps electronic
Battery Life 2× CR2 lithium batteries ~400 shots (CIPA)
Weight ~165g (without batteries) 427g body only
Dimensions 113 × 66 × 44mm 127.0 × 75.0 × 45.0mm
Weather Sealed No Yes
Viewfinder Optical viewfinder with half-frame framelines EVF 0.75× 3.68M-dot
Screen N/A 3.15" fully articulating touchscreen — primary interface
Mount 35mm film (ISO 25–3200 via DX coding + manual dial) L-mount (Leica/Panasonic/Sigma)
Memory Cards 35mm 135-format film cartridge Single UHS-II SD slot
Connectivity N/A USB-C, Wi-Fi, Bluetooth
Genre Pentax 17BF
Street
9.0
9.0
Travel
9.0
9.0
Portrait
7.0
9.0
Everyday
9.0
Landscape
7.0
7.0
Low Light
4.0
Sports
4.0
Vlogging & Video
4.0

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

⚡ Compare specs side by side Pentax 17 prices → BF prices →

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