Upgrade Guide

Sigma Sigma fp→Sigma BF

Is it worth upgrading? Spec analysis, key improvements, and our verdict.

You own

Sigma

Sigma fp

£1499

2019

→

Upgrade to

Sigma

£1799 (+£300)

2025

✅

Strong upgrade

The BF improves across 4 key areas at a reasonable price gap. Most Sigma fp owners will notice the difference.

What's new in the BF

Unchanged or similar

Suitability by genre

Full spec comparison

Spec	Sigma fp	BF
Price	£1,499	£1,799
Released	2019	2025	↑
Sensor	24.6MP full-frame Bayer CMOS	24MP full-frame BSI CMOS
Resolution	25MP	24MP	↓
Video	12-bit Cinema DNG RAW, 4K/24p, 1080p/120p	4K/30p, 1080p/60p
Autofocus	Contrast-detect AF with face/eye detection	Phase-detect AF — face and eye detection
Stabilisation	None (lens-based only)	5-axis IBIS — 7 stops
Burst Rate	18fps electronic	9fps electronic	↓
Battery Life	200 shots (CIPA)	~400 shots (CIPA)	↑
Weight	422g body only	427g body only	↓
Weather Sealed	No	Yes	↑
Viewfinder	None	EVF 0.75× 3.68M-dot
Screen	3.15" fixed touchscreen	3.15" fully articulating touchscreen — primary interface
Mount	Leica L-mount	L-mount (Leica/Panasonic/Sigma)
Memory Cards	Single SD UHS-II + CFexpress Type B (via adapter)	Single UHS-II SD slot

Compare side-by-side

See Sigma fp and BF next to each other with our interactive comparison tool.

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Camera family history