EOS RPvs OM System TG-7vs Sony A9 III
OM System
OM System TG-7 (2023)
From £449
Best for Adventure, underwater & outdoor use
View OM System TG-7
Which should you buy?
Entry Full-Frame Stills Photography — EOS RP (2019): An affordable gateway into the RF system. The RP makes sense as a stepping stone camera — if you're committed to Canon RF glass, this is the cheapest full-frame body to buy those lenses for. Just manage expectations on video and battery life.
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.
Sports & Action Professionals — Sony A9 III (2023): A paradigm-shifting camera — the global shutter eliminates every rolling shutter limitation that has constrained action photography for years.
Who should buy what
EOS RP (2019)
- Canon users who want to start investing in RF glass affordably
- Stills photographers who shoot primarily in good light
- Anyone coming from a Canon DSLR wanting the RF system at low cost
- Travel photographers who prioritise compactness over video specs
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
Sony A9 III (2023)
- You shoot professional sport, motorsport, or action and need zero rolling shutter distortion
- You need reliable high-speed flash sync for studio or on-location action work
- You want the absolute pinnacle of Sony's action and sports camera technology
Quick take: The eos rp has the highest resolution at 26mp; the om system tg-7 is the most affordable; only the om system tg-7, sony a9 iii are weather sealed. Scroll down for the full spec breakdown.
Full specifications
| Specification | EOS RP (2019) | OM System TG-7 (2023) | Sony A9 III (2023) |
|---|---|---|---|
| Price | £799 | £449 | £5,999 |
| Sensor | 26.2MP Full-Frame CMOS | 12MP BSI CMOS | 24.6MP full-frame Exmor RS CMOS (global shutter) |
| Resolution | 26.2MP | 12.0MP | 24.6MP |
| Video | 4K/24p (with 1.7× crop), 1080p/60p | 4K/30p, 1080p/120p | 4K/120p, 4K/60p, 1080p/240p |
| Autofocus | Dual Pixel CMOS AF, 4779 manually selectable positions | Hybrid phase/contrast AF | AI subject recognition AF, 759-point phase-detect |
| Stabilisation | None (no IBIS) | Digital IS | 8-stop IBIS |
| Burst Rate | 5fps mechanical | 20fps | 120fps blackout-free electronic |
| Battery Life | ~250 shots (CIPA) — very limited | 340 shots (CIPA) | 530 shots (CIPA) |
| Weight | 485g (body, battery, card) | 253g | 703g body only |
| Dimensions | 132.5 × 85.0 × 70.0mm | 113.0 × 66.5 × 32.7mm | 136.1 × 96.9 × 82.9mm |
| Weather Sealed | No | Yes | Yes |
| Viewfinder | EVF, 2.36M dots, 0.70× magnification | None | 0.64" Quad-XGA OLED EVF, 9.44M dots |
| Screen | 3.0" vari-angle touchscreen, 1.04M dots | 3.0" fixed TFT LCD | 3.2" fully articulating touchscreen |
| Mount | Canon RF-mount | Fixed 25mm-equiv f/2.0 lens (4× optical zoom) | Sony FE (E-mount) |
| Memory Cards | Single SD UHS-II | Single SD UHS-I | Dual CFexpress Type A / SD UHS-II |
| Connectivity | USB-C, Wi-Fi, Bluetooth | USB-C, Wi-Fi, Bluetooth | USB-C 3.2, HDMI A, Wi-Fi 6, Bluetooth 5.3 |
Compare pairs from this group