EOS R8vs OM System TG-7vs A6400
OM System
OM System TG-7 (2023)
From £449
Best for Adventure, underwater & outdoor use
View OM System TG-7
Which should you buy?
Full-Frame Entry — EOS R8 (2023): Canon's most affordable full-frame mirrorless — 4K/60p 10-bit and class-leading Dual Pixel AF at an accessible entry price.
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.
Content Creation & Vlogging — A6400 (2019): The best value APS-C Sony you can buy — especially used. Real-time Eye AF at this price point was transformative when it launched and still makes it one of the most reliable autofocus systems in the lineup.
Who should buy what
EOS R8 (2023)
- You want full-frame image quality on a tight budget
- You shoot mainly in good light and can live without built-in stabilisation
- You primarily shoot stills with occasional video
OM System TG-7 (2023)
- You dive, surf, kayak, ski, or hike and need a camera that genuinely survives anything
- You want a waterproof backup or travel camera that doesn't require a separate housing
- You need a rugged compact for adventure, outdoor, and underwater activities
A6400 (2019)
- Vloggers and content creators who need a flip screen and reliable AF
- Photographers upgrading from a compact or smartphone
- Beginners who want room to grow into a full E-mount lens ecosystem
- Anyone prioritising autofocus performance at an accessible price
Quick take: The eos r8 has the highest resolution at 24mp; the om system tg-7 is the most affordable; only the om system tg-7 is weather sealed. Scroll down for the full spec breakdown.
Full specifications
| Specification | EOS R8 (2023) | OM System TG-7 (2023) | A6400 (2019) |
|---|---|---|---|
| Price | £1,099 | £449 | £899 |
| Sensor | 24.2MP Full-frame BSI CMOS | 12MP BSI CMOS | 24.2MP APS-C Exmor CMOS BSI |
| Resolution | 24.2MP | 12.0MP | 24.2MP |
| Video | 4K/60p oversampled 10-bit, FHD/180p | 4K/30p, 1080p/120p | 4K/30p (6K oversampled, no crop), 1080p/120p slow-motion |
| Autofocus | Dual Pixel CMOS AF II, 1053 zones, eye/face/subject tracking | Hybrid phase/contrast AF | Phase-detect, 425 points, real-time Eye AF & animal AF |
| Stabilisation | None (no IBIS) | Digital IS | None (no IBIS) |
| Burst Rate | 6fps mechanical, 40fps electronic | 20fps | 11fps mechanical, 8fps with AF tracking |
| Battery Life | ~220 shots (CIPA) | 340 shots (CIPA) | ~410 shots (CIPA) |
| Weight | 461g body only | 253g | 403g (body, battery, card) |
| Dimensions | 132.5 × 86.1 × 70.0mm | 113.0 × 66.5 × 32.7mm | 120.0 × 66.9 × 59.7mm |
| Weather Sealed | No | Yes | No |
| Viewfinder | EVF, 2.36M dots, 0.59× | None | EVF, 2.36M dots, 0.70× magnification |
| Screen | 3.0" fully articulating touchscreen | 3.0" fixed TFT LCD | 3.0" tilting touchscreen, 180° flip for selfie/vlog, 921k dots |
| Mount | Canon RF mount (full-frame) | Fixed 25mm-equiv f/2.0 lens (4× optical zoom) | Sony E-mount |
| Memory Cards | Single SD UHS-II slot | Single SD UHS-I | Single SD UHS-I |
| Connectivity | USB-C, Bluetooth, Wi-Fi | USB-C, Wi-Fi, Bluetooth | Micro-USB, Wi-Fi, Bluetooth, NFC |
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