Upgrade Guide
Lumix DC-G100D→Lumix TZ99
Is it worth upgrading? Spec analysis, key improvements, and our verdict.
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Worthwhile
Clear improvements over the DC-G100D. Whether it justifies the cost depends on which upgrades matter most to your shooting.
What's new in the TZ99
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Battery life380 shots (CIPA) vs ~250 shots (CIPA)
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Generation2 years newer (2025 vs 2023)
Unchanged or similar
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ResolutionSimilar (20MP)
Suitability by genre
Base scores — computed from verified specs for an enthusiast shooting photo and video. The Upgrade Checker adjusts them for your skill level.
| Genre | DC-G100D | TZ99 | |
|---|---|---|---|
| Portrait | -2.2 | ||
| Street | -1.1 | ||
| Travel | -0.4 | ||
| Wedding & Events | -1.8 | ||
| Vlogging & Video | -0.8 | ||
| Filmmaking | -1.8 | ||
| Documentary | -1.2 | ||
| Sports & Action | -1.4 | ||
| Landscape | -0.7 | ||
| Wildlife | -1.2 | ||
| Casual | -0.4 | ||
| Food | -1.8 | ||
| Macro | -2.3 | ||
| Architecture | -1.1 | ||
| Astrophotography | -2.6 | ||
| Fun & simple | — |
Full spec comparison
| Spec | DC-G100D | TZ99 | |
|---|---|---|---|
| Price | £649 | £493 | |
| Released | 2023 | 2025 | ↑ |
| Sensor | 20.3MP Micro Four Thirds Live MOS | 20.3MP 1/2.3-inch MOS | |
| Resolution | 20MP | 20MP | |
| Video | 4K/30p, 4K/24p, 1080p/60p — V-Log L (upgrade) | 4K/30p | |
| Autofocus | Contrast-detect DFD AF with face, eye and animal detection | Contrast-detect AF with face detection | |
| Stabilisation | 2-axis (body); 5-axis Dual IS II when used with OIS lenses | Optical image stabilisation (lens-based) | |
| Burst Rate | 10fps AF single, 9fps AFS continuous | 10fps | |
| Battery Life | ~250 shots (CIPA) | 380 shots (CIPA) | ↑ |
| Weight | 333g (body only) | 322g (with battery and card) | ↑ |
| Weather Sealed | Not weather sealed | Not weather sealed | |
| Viewfinder | EVF 0.53× 3.68M-dot — pop-up style | None (screen only) | |
| Screen | 3.0" fully articulating touchscreen, 1.84M dots | Tilting touchscreen | |
| Mount | Micro Four Thirds (MFT) | Fixed Leica 30x zoom lens (24-720mm equivalent) | |
| Memory Cards | Single SD/SDHC/SDXC slot | Single SD (UHS-I) |
Compare side-by-side
⚖️ Compare these cameras
See DC-G100D and TZ99 next to each other with our interactive comparison tool.
Get a personalised upgrade score
Run the upgrade checker →
Tell us what you shoot and we'll score the TZ99 against your specific genres — not just specs.
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