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Pentax K-3 Mark III · with dual-battery kit — APS-C DSLR · 2021
Pentax

Pentax K-3 Mark III · with dual-battery kit

APS-C DSLR · 2021

80
/ 100
From $2,149
VS
Canon EOS RP — full-frame · 2019
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 dual-battery 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 dual-battery 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
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Winner by scenario

Derived from the sub-score breakdown · not a separate test

Ergonomics

Tie

Compared on the ergonomics sub-score

Effectively tied — neither pulls a 2-point weighted lead.

Photo

Tie

Compared on the photo sub-score

Effectively tied — neither pulls a 2-point weighted lead.

Autofocus

Tie

Compared on the autofocus sub-score

Effectively tied — neither pulls a 2-point weighted lead.

Value for money

Canon EOS RP

Specdex score per dollar at MSRP

Canon EOS RP more score per dollar ($1,299 vs $2,149).

Pentax K-3 Mark III · with dual-battery kit 80
vs
80 Canon EOS RP

Score breakdown

Pentax K-3 Mark III · with dual-battery 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

Pentax K-3 Mark III · with dual-battery kit versus Canon EOS RP — full spec comparison
Spec Pentax K-3 Mark III · with dual-battery kit Canon EOS RP
Format
APS-C DSLR
full-frame
Release year
2021
2019

Pentax K-3 Mark III · with dual-battery 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 dual-battery kit vs Canon EOS RP

Which is better, Pentax K-3 Mark III · with dual-battery 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 dual-battery kit worth the price? +

At $2,149, Pentax K-3 Mark III · with dual-battery 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 dual-battery 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.

Which is the better value, Pentax K-3 Mark III · with dual-battery kit or Canon EOS RP? +

Canon EOS RP — more score per dollar ($1,299 vs $2,149). Specdex score per dollar at MSRP.