Upgrade Guide
Nikon D3100→Nikon D7500
Is it worth upgrading? Spec analysis, key improvements, and our verdict.
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Strong upgrade
The D7500 improves across 5 key areas at a reasonable price gap. Most D3100 owners will notice the difference.
What's new in the D7500
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Resolution21MP vs 14MP (+7MP)
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Weather sealingAdded — fully sealed body
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Burst rate8fps mechanical vs 3fps
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Battery life~950 shots (CIPA with OVF) vs ~550 shots (CIPA)
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Generation7 years newer (2017 vs 2010)
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 | D3100 | D7500 | |
|---|---|---|---|
| Portrait | +0.5 | ||
| Street | -0.2 | ||
| Travel | +0.5 | ||
| Wedding & Events | +1.4 | ||
| Documentary | +2.2 | ||
| Sports & Action | +1.6 | ||
| Landscape | +1.6 | ||
| Wildlife | +1.4 | ||
| Casual | +0.5 | ||
| Food | +1.4 | ||
| Macro | +0.7 | ||
| Architecture | +1.1 | ||
| Astrophotography | +1.0 | ||
| Filmmaking | — |
Full spec comparison
| Spec | D3100 | D7500 | |
|---|---|---|---|
| Price | £35 used | £224 used | |
| Released | 2010 | 2017 | ↑ |
| Sensor | 14.2MP APS-C CMOS | 20.9MP APS-C BSI CMOS (D500 sensor) | |
| Resolution | 14MP | 21MP | ↑ |
| Video | Full HD 1080p/24, 720p/30 | 4K/30p (slight crop), FHD/60p | |
| Autofocus | 11-point phase-detect (1 cross-type) via viewfinder; contrast AF with face priority in live view | Multi-CAM 3500FX II, 51 points (15 cross-type) | |
| Stabilisation | No IBIS (lens-based stabilisation only) | No stabilisation | |
| Burst Rate | 3fps | 8fps mechanical | ↑ |
| Battery Life | ~550 shots (CIPA) | ~950 shots (CIPA with OVF) | ↑ |
| Weight | 505g (with battery) | 640g (body only) | ↓ |
| Weather Sealed | Not weather sealed | Yes | ↑ |
| Viewfinder | Optical pentamirror, 95% coverage, 0.8x | Optical pentaprism, 100% coverage, 0.94× magnification | |
| Screen | 3.0" fixed LCD, 230k dots | 3.2" tilting touchscreen | |
| Mount | Nikon F-mount (DX) | Nikon F-mount (DX) | |
| Memory Cards | Single SD slot | Single SD UHS-II slot |
Compare side-by-side
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