Pentax
Pentax K-3 Mark III · with 50mm kit
APS-C DSLR · 2021
80
/ 100
From $2,299
VS
Canon
Canon EOS RP
full-frame · 2019
80
/ 100
From $1,299
Specdex verdict
Dead heat — it comes down to priorities.
In our weighted Specdex score, Pentax K-3 Mark III · with 50mm kit lands at 80 and Canon EOS RP at 80. With scores tied, the decision hinges on which sub-scores matter most to you.
Pick Pentax K-3 Mark III · with 50mm kit if…
- ✓Mature system, great used market
- ✓Proven lens lineup
- ✓Often on sale
Pick Canon EOS RP if…
- ✓Mature system, great used market
- ✓Proven lens lineup
- ✓Often on sale
Pentax K-3 Mark III · with 50mm kit 80
vs 80 Canon EOS RP
Score breakdown
Pentax K-3 Mark III · with 50mm kit
80 photo 80
video 72
autofocus 76
ergonomics 86
Canon EOS RP
80 photo 80
video 72
autofocus 76
ergonomics 86
Specs side-by-side
| Spec | Pentax K-3 Mark III · with 50mm kit | Canon EOS RP |
|---|---|---|
| Format | APS-C DSLR | full-frame |
| Release year | 2021 | 2019 |
Pentax K-3 Mark III · with 50mm kit
Pros
- +Mature system, great used market
- +Proven lens lineup
- +Often on sale
Cons
- −Older AF system
- −Heavier than modern mirrorless
- −Firmware updates trailed off
Canon EOS RP
Pros
- +Mature system, great used market
- +Proven lens lineup
- +Often on sale
Cons
- −Older AF system
- −Heavier than modern mirrorless
- −Firmware updates trailed off
FAQ: Pentax K-3 Mark III · with 50mm kit vs Canon EOS RP
Which is better, Pentax K-3 Mark III · with 50mm kit or Canon EOS RP? +
Both score 80 on our weighted rubric — tied. Your best pick depends on the sub-scores above.
Is Pentax K-3 Mark III · with 50mm kit worth the price? +
At $2,299, Pentax K-3 Mark III · with 50mm kit delivers a Specdex score of 80 — strongest in ergonomics.
Is Canon EOS RP worth the price? +
At $1,299, Canon EOS RP delivers a Specdex score of 80 — strongest in ergonomics.
Does Pentax K-3 Mark III · with 50mm kit or Canon EOS RP 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.