OM System TG-7vs A7
OM System
OM System TG-7 (2023)
Starting from £449 new
Best for Adventure, underwater & outdoor use
View OM System TG-7
GearScore™ Verdict — Which should you buy?
Adventure, Underwater & Outdoor Use — OM System TG-7 (2023): Waterproof to 15m, freezeproof and shockproof — the TG-7 is the most capable rugged compact for adventure and outdoor use.
Camera History & Full-Frame Introduction — A7 (2013): The camera that changed photography — the world's first compact full-frame mirrorless, the A7 launched a product family that redefined what was possible.
Who should buy what
OM System TG-7 (2023)
- Divers and snorkellers who need a waterproof camera without a housing
- Outdoor and adventure photographers who want a rugged pocket compact
- Parents who want an indestructible camera for children and family adventures
- Travellers who want a tough backup camera that can go anywhere
A7 (2013)
- Photographers interested in the camera that launched the full-frame mirrorless era
- Budget-conscious buyers who want to experience full-frame image quality at minimal cost
- Sony FE system users who want the original A7 for sentimental or historical value
- Those adapting vintage lenses who want full-frame with phase-detect AF at low cost
Quick take: The a7 has the highest resolution at 24mp; the a7 is the most affordable; only the om system tg-7 is weather sealed. Scroll down for the full spec breakdown.
Full specifications
| Specification | OM System TG-7 (2023) | A7 (2013) |
|---|---|---|
| Price | £449 | £299 |
| Sensor | 12MP BSI CMOS | 24.3MP Full-Frame CMOS |
| Resolution | 12.0MP | 24.3MP |
| Video | 4K/30p, 1080p/120p | 1080p/60p |
| Autofocus | Hybrid phase/contrast AF | 117 phase-detect + 25 contrast-detect AF points |
| Stabilisation | Digital IS | None |
| Burst Rate | 20fps | 5fps |
| Battery Life | 340 shots (CIPA) | ~340 shots (CIPA) |
| Weight | 253g | 474g (with battery and card) |
| Dimensions | 113.0 × 66.5 × 32.7mm | 126.9 × 94.4 × 48.2mm |
| Weather Sealed | Yes | No |
| Viewfinder | None | EVF, OLED 2.36M dots, 0.71× magnification |
| Screen | 3.0" fixed TFT LCD | 3.0" fixed LCD, 1.23M dots (no tilt, no touch) |
| Mount | Fixed 25mm-equiv f/2.0 lens (4× optical zoom) | Sony FE (full-frame E-mount) |
| Memory Cards | Single SD UHS-I | Single SD UHS-I slot |
| Connectivity | USB-C, Wi-Fi, Bluetooth | USB, Wi-Fi, NFC |
Suitability by genre
| Genre | OM System TG-7 | A7 |
|---|---|---|
| Adventure & Outdoor | — | |
| Underwater | — | |
| Travel | ||
| Family & Everyday | — | |
| Street | ||
| Portrait | ||
| Landscape | — | |
| Sports & Action | — | |
| Vlogging & Video | — |
GearScore™ suitability scores are based on aggregated purchaser reviews weighted by photography genre. See how scores are calculated →
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Camera family history