Decision tools · Compare
1 J5 vs D3100
Quick take: The 1 J5 has the highest resolution at 21MP; the D3100 is the most affordable.
16 specs side by side·14 genres scored·UK prices from Wex Photo Video and Clifton Cameras
How to read this page. Highlighted cells win that row on the spec alone. Genre scores are the engine's base scores (enthusiast, photo and video); Camera Match re-weights them for your level and priorities. Price buttons are affiliate links; the price you pay is the same.
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Full specificationsthe better value in each row is highlighted
| Specification | 1 J5Nikon · 2015 | D3100Nikon · 2010 |
|---|---|---|
| Price | — | £35 used |
| Sensor | 20.8MP 1-inch (CX) BSI CMOS | 14.2MP APS-C CMOS |
| Resolution | 20.8MPBest | 14.2MP |
| Video | 4K UHD/15p, 1080p/60 | Full HD 1080p/24, 720p/30 |
| Autofocus | Hybrid AF: 171 areas, 105 with phase detection; face detection, subject tracking | 11-point phase-detect (1 cross-type) via viewfinder; contrast AF with face priority in live view |
| Stabilisation | No IBIS (lens-based stabilisation only) | No IBIS (lens-based stabilisation only) |
| Burst Rate | 20fpsBest | 3fps |
| Battery Life | ~250 shots (CIPA) | ~550 shots (CIPA)Best |
| Weight | 265g (with battery)Best | 505g (with battery) |
| Dimensions | 98.3 × 59.7 × 31.5mm | 124 × 96 × 74.5mm |
| Weather Sealed | Not weather sealed | Not weather sealed |
| Viewfinder | None (rear screen only) | Optical pentamirror, 95% coverage, 0.8x |
| Screen | 3.0" tilting touchscreen, 1.04M dots | 3.0" fixed LCD, 230k dots |
| Mount | Nikon 1 | Nikon F-mount (DX) |
| Memory Cards | Single microSD slot | Single SD slot |
| Connectivity | USB, micro HDMI, Wi-Fi, NFC | USB 2.0, mini HDMI, accessory terminal (MC-DC2 / GP-1) |
Wins the row — price, resolution, burst, battery, weight and sealing are compared; text specs aren't ranked.
How they score by genreengine base scores out of 10
Genre
1 J5
D3100
Portrait
4.3/10
5.3/10
Street
6.7/10
5.5/10
Travel
6.1/10
4.9/10
Wedding & Events
2.9/10
4.1/10
Filmmaking
3.2/10
—
Documentary
4.1/10
3.6/10
Sports & Action
4.9/10
4.3/10
Landscape
3.9/10
3.8/10
Wildlife
5.1/10
4.9/10
Casual
5.0/10
3.4/10
Food
4.8/10
3.8/10
Macro
3.4/10
3.5/10
Architecture
3.9/10
3.9/10
Astrophotography
3.0/10
4.6/10
Scores come from the same engine as Camera Match: verified specifications weighted by what each genre needs, with documented adjustments. The product page and this table show the enthusiast base score. See how scores are calculated →
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