Upgrade Guide
Sigma BF→Sigma Sigma fp
Is it worth upgrading? Spec analysis, key improvements, and our verdict.
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Situational
One clear hardware improvement over the BF. Worth it if that specific upgrade aligns with what you shoot.
What's new in the Sigma fp
-
Burst rate18fps electronic vs 9fps electronic
Unchanged or similar
-
ResolutionSimilar (25MP)
-
Weather sealingNot present in new body
-
StabilisationIBIS not present in new body
Suitability by genre
| Genre | BF | Sigma fp | |
|---|---|---|---|
| Street | — | ||
| Travel | — | ||
| Portrait | -2.0 | ||
| Landscape | — | ||
| Sports | — | ||
| Vlogging & Video | +5.0 | ||
| Sports & Action | — |
Full spec comparison
| Spec | BF | Sigma fp | |
|---|---|---|---|
| Price | £1,799 | £1,499 | |
| Released | 2025 | 2019 | ↓ |
| Sensor | 24MP full-frame BSI CMOS | 24.6MP full-frame Bayer CMOS | |
| Resolution | 24MP | 25MP | ↑ |
| Video | 4K/30p, 1080p/60p | 12-bit Cinema DNG RAW, 4K/24p, 1080p/120p | |
| Autofocus | Phase-detect AF — face and eye detection | Contrast-detect AF with face/eye detection | |
| Stabilisation | 5-axis IBIS — 7 stops | None (lens-based only) | |
| Burst Rate | 9fps electronic | 18fps electronic | ↑ |
| Battery Life | ~400 shots (CIPA) | 200 shots (CIPA) | ↓ |
| Weight | 427g body only | 422g body only | ↑ |
| Weather Sealed | Yes | No | ↓ |
| Viewfinder | EVF 0.75× 3.68M-dot | None | |
| Screen | 3.15" fully articulating touchscreen — primary interface | 3.15" fixed touchscreen | |
| Mount | L-mount (Leica/Panasonic/Sigma) | Leica L-mount | |
| Memory Cards | Single UHS-II SD slot | Single SD UHS-II + CFexpress Type B (via adapter) |
Compare side-by-side
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