EOS R8vs Pentax K-3 Mark IIIvs Ricoh GR IIIx
Pentax
Pentax K-3 Mark III (2021)
From £1699
Best for DSLR enthusiasts & outdoor photographers
View Pentax K-3 Mark III
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.
Dslr Enthusiasts & Outdoor Photographers — Pentax K-3 Mark III (2021): The finest APS-C DSLR ever made — class-leading weather sealing, optical viewfinder, 5-axis IBIS, and extraordinary build for photographers committed to DSLR.
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.
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
Pentax K-3 Mark III (2021)
- You're a committed DSLR photographer with significant investment in Pentax glass
- You shoot in extreme weather conditions and place build quality and reliability above everything
- You prefer optical viewfinder performance and want the best modern APS-C DSLR available
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
Quick take: The pentax k-3 mark iii has the highest resolution at 26mp; the ricoh gr iiix is the most affordable; only the pentax k-3 mark iii is weather sealed. Scroll down for the full spec breakdown.
Full specifications
| Specification | EOS R8 (2023) | Pentax K-3 Mark III (2021) | Ricoh GR IIIx (2021) |
|---|---|---|---|
| Price | £1,099 | £1,699 | £999 |
| Sensor | 24.2MP Full-frame BSI CMOS | 25.7MP APS-C BSI CMOS (AA-filterless) | 24.2MP APS-C CMOS |
| Resolution | 24.2MP | 25.7MP | 24.2MP |
| Video | 4K/60p oversampled 10-bit, FHD/180p | 4K/30p, 1080p/60p | 1080p/60p |
| Autofocus | Dual Pixel CMOS AF II, 1053 zones, eye/face/subject tracking | SAFOX 13 phase-detect, 101-point (25 cross-type) | Hybrid contrast/phase-detect AF with subject detection |
| Stabilisation | None (no IBIS) | 5.5-stop 5-axis IBIS (Shake Reduction III) | 4-stop IBIS (Shake Reduction) |
| Burst Rate | 6fps mechanical, 40fps electronic | 12fps | 4fps |
| Battery Life | ~220 shots (CIPA) | 800 shots (CIPA) | 200 shots (CIPA) |
| Weight | 461g body only | 820g body only | 262g |
| Dimensions | 132.5 × 86.1 × 70.0mm | 134.5 × 103.5 × 73.5mm | 111.2 × 61.4 × 33.2mm |
| Weather Sealed | No | Yes | No |
| Viewfinder | EVF, 2.36M dots, 0.59× | Optical pentaprism, 100% coverage, 1.05× magnification | None |
| Screen | 3.0" fully articulating touchscreen | 3.2" tilting touchscreen | 3.0" fixed touchscreen |
| Mount | Canon RF mount (full-frame) | Pentax KF-mount | Fixed 40mm-equiv f/2.8 lens |
| Memory Cards | Single SD UHS-II slot | Dual SD UHS-II | Single SD UHS-I |
| Connectivity | USB-C, Bluetooth, Wi-Fi | USB-C, Wi-Fi, Bluetooth | USB-C, Wi-Fi, Bluetooth |
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