Canon EOS R5 Mark II
45 MP stacked · 8K60 RAW · AI detection
Pentax K-3 Mark III · standard
APS-C DSLR · 2021
Canon EOS R5 Mark II takes it — here’s why.
In our weighted Specdex score, Canon EOS R5 Mark II lands at 95 and Pentax K-3 Mark III · standard at 80. That puts Canon EOS R5 Mark II ahead by 15 points — a decisive margin driven mostly by its strengths in the categories below.
Pick Canon EOS R5 Mark II if…
- ✓8K 60p RAW internal recording
- ✓Next-gen AI subject detection (5,850 AF points, 100% coverage)
- ✓Up to 30 fps electronic burst
Pick Pentax K-3 Mark III · standard if…
- ✓Mature system, great used market
- ✓Proven lens lineup
- ✓Often on sale
Winner by scenario
Derived from the sub-score breakdown · not a separate testErgonomics
Canon EOS R5 Mark IICompared on the ergonomics sub-score
Canon EOS R5 Mark II leads on ergonomics (92 vs 86).
Photo
Canon EOS R5 Mark IICompared on the photo sub-score
Canon EOS R5 Mark II leads on photo (96 vs 80).
Autofocus
Canon EOS R5 Mark IICompared on the autofocus sub-score
Canon EOS R5 Mark II leads on autofocus (98 vs 76).
Value for money
Pentax K-3 Mark III · standardSpecdex score per dollar at MSRP
Pentax K-3 Mark III · standard more score per dollar ($1,999 vs $4,299).
Score breakdown
Specs side-by-side
| Spec | Canon EOS R5 Mark II | Pentax K-3 Mark III · standard |
|---|---|---|
| Sensor | 45 MP BSI stacked CMOS | — |
| Mount | Canon RF | — |
| Burst | 12 fps mechanical / 30 fps electronic | — |
| Video | 8K 60p RAW · 4K 120p | — |
| AF | 5,850 user-selectable points, 100% coverage | — |
| ISO | 100–51200 (exp. 50–102400) | — |
| Stabilization | 5-axis IBIS | — |
| Format | — | APS-C DSLR |
| Release year | — | 2021 |
Canon EOS R5 Mark II
- +8K 60p RAW internal recording
- +Next-gen AI subject detection (5,850 AF points, 100% coverage)
- +Up to 30 fps electronic burst
- −Price jumped from R5
- −Body heats in extended 8K recording
- −Battery life modest
Pentax K-3 Mark III · standard
- +Mature system, great used market
- +Proven lens lineup
- +Often on sale
- −Older AF system
- −Heavier than modern mirrorless
- −Firmware updates trailed off
FAQ: Canon EOS R5 Mark II vs Pentax K-3 Mark III · standard
Which is better, Canon EOS R5 Mark II or Pentax K-3 Mark III · standard? +
Canon EOS R5 Mark II scores 95 on our weighted rubric — ahead by 15. Your best pick depends on the sub-scores above.
Is Canon EOS R5 Mark II worth the price? +
At $4,299, Canon EOS R5 Mark II delivers a Specdex score of 95 — strongest in autofocus.
Is Pentax K-3 Mark III · standard worth the price? +
At $1,999, Pentax K-3 Mark III · standard delivers a Specdex score of 80 — strongest in ergonomics.
Does Canon EOS R5 Mark II or Pentax K-3 Mark III · standard last longer? +
Based on our long-term update and support ratings, both ship with multi-year support. Battery and reliability scores are visible in the breakdown above.
Which is better for ergonomics, Canon EOS R5 Mark II or Pentax K-3 Mark III · standard? +
Canon EOS R5 Mark II — leads on ergonomics (92 vs 86). Compared on the ergonomics sub-score.
Which is better for photo, Canon EOS R5 Mark II or Pentax K-3 Mark III · standard? +
Canon EOS R5 Mark II — leads on photo (96 vs 80). Compared on the photo sub-score.