Pentax
Pentax K-3 Mark III
APS-C DSLR · 2021
80
/ 100
From $1,999
VS
Sony Alpha 1 II wins by 16
Sony
Sony Alpha 1 II
50 MP · 30 fps · AI subject recognition
96
/ 100
From $6,498
Specdex verdict
Sony Alpha 1 II takes it — here’s why.
In our weighted Specdex score, Pentax K-3 Mark III lands at 80 and Sony Alpha 1 II at 96. That puts Sony Alpha 1 II ahead by 16 points — a decisive margin driven mostly by its strengths in the categories below.
Pick Pentax K-3 Mark III if…
- ✓Mature system, great used market
- ✓Proven lens lineup
- ✓Often on sale
Pick Sony Alpha 1 II if…
- ✓30 fps blackout-free
- ✓AI subject AF with recognition
- ✓No read-out rolling shutter concerns
Pentax K-3 Mark III 80
vs 96 Sony Alpha 1 II
Score breakdown
Pentax K-3 Mark III
80 photo 80
video 72
autofocus 76
ergonomics 86
Sony Alpha 1 II
96 photo 98
video 94
autofocus 100
ergonomics 92
Specs side-by-side
| Spec | Pentax K-3 Mark III | Sony Alpha 1 II |
|---|---|---|
| Format | APS-C DSLR | — |
| Release year | 2021 | — |
| Sensor | — | 50 MP BSI stacked |
| Mount | — | Sony E |
| Video | — | 8K30, 4K120 |
| Stabilization | — | 5-axis IBIS |
Pentax K-3 Mark III
Pros
- +Mature system, great used market
- +Proven lens lineup
- +Often on sale
Cons
- −Older AF system
- −Heavier than modern mirrorless
- −Firmware updates trailed off
Sony Alpha 1 II
Pros
- +30 fps blackout-free
- +AI subject AF with recognition
- +No read-out rolling shutter concerns
Cons
- −Eye-watering price
- −Incremental upgrade over A1
- −Huge file sizes
FAQ: Pentax K-3 Mark III vs Sony Alpha 1 II
Which is better, Pentax K-3 Mark III or Sony Alpha 1 II? +
Sony Alpha 1 II scores 96 on our weighted rubric — ahead by 16. Your best pick depends on the sub-scores above.
Is Pentax K-3 Mark III worth the price? +
At $1,999, Pentax K-3 Mark III delivers a Specdex score of 80 — strongest in ergonomics.
Is Sony Alpha 1 II worth the price? +
At $6,498, Sony Alpha 1 II delivers a Specdex score of 96 — strongest in autofocus.
Does Pentax K-3 Mark III or Sony Alpha 1 II 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.