EOS R100vs Ricoh GR IIIxvs A6400
Which should you buy?
First Camera / Beginner Photography — EOS R100 (2023): The R100 does the basics well at the lowest possible price point. Its main value is as a gateway into the Canon RF ecosystem — the lenses you buy now will work on any Canon body you upgrade to later. Modest ambitions, reliably met.
Street Portraits & Reportage — Ricoh GR IIIx (2021): APS-C in a shirt pocket with a 40mm perspective — the GR IIIx is the ideal street portrait compact for photographers who want a slightly tighter frame.
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 R100 (2023)
- First-time camera buyers stepping up from a smartphone
- Students and hobbyists wanting an affordable starting point
- Anyone who wants to start investing in Canon RF glass on a budget
- Casual photographers who don't need advanced video or speed
Ricoh GR IIIx (2021)
- You want the GR experience with a slightly tighter, more versatile field of view
- You shoot portraits, food, or street scenes where 40mm suits better than 28mm wide
- You want a premium compact that fits in a shirt pocket with better tonal rendering than a phone
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 ricoh gr iiix has the highest resolution at 24mp; the eos r100 is the most affordable. Scroll down for the full spec breakdown.
Full specifications
| Specification | EOS R100 (2023) | Ricoh GR IIIx (2021) | A6400 (2019) |
|---|---|---|---|
| Price | £529 | £999 | £899 |
| Sensor | 24.1MP APS-C CMOS | 24.2MP APS-C CMOS | 24.2MP APS-C Exmor CMOS BSI |
| Resolution | 24.1MP | 24.2MP | 24.2MP |
| Video | 4K/30p (slight crop), 1080p/60p | 1080p/60p | 4K/30p (6K oversampled, no crop), 1080p/120p slow-motion |
| Autofocus | Dual Pixel CMOS AF, face detection, subject tracking | Hybrid contrast/phase-detect AF with subject detection | Phase-detect, 425 points, real-time Eye AF & animal AF |
| Stabilisation | None (no IBIS) | 4-stop IBIS (Shake Reduction) | None (no IBIS) |
| Burst Rate | 6.5fps mechanical | 4fps | 11fps mechanical, 8fps with AF tracking |
| Battery Life | ~270 shots (CIPA) | 200 shots (CIPA) | ~410 shots (CIPA) |
| Weight | 356g (body, battery, card) | 262g | 403g (body, battery, card) |
| Dimensions | 116.3 × 85.5 × 68.8mm | 111.2 × 61.4 × 33.2mm | 120.0 × 66.9 × 59.7mm |
| Weather Sealed | No | No | No |
| Viewfinder | EVF, 2.36M dots, 0.59× magnification | None | EVF, 2.36M dots, 0.70× magnification |
| Screen | 3.0" fixed touchscreen, 1.04M dots | 3.0" fixed touchscreen | 3.0" tilting touchscreen, 180° flip for selfie/vlog, 921k dots |
| Mount | Canon RF-mount | Fixed 40mm-equiv f/2.8 lens | Sony E-mount |
| Memory Cards | Single SD UHS-II | Single SD UHS-I | Single SD UHS-I |
| Connectivity | USB-C, Wi-Fi, Bluetooth | USB-C, Wi-Fi, Bluetooth | Micro-USB, Wi-Fi, Bluetooth, NFC |
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