Decision tools · Compare
A1 vs Pentax K-3 Mark III
Quick take: The A1 has the highest resolution at 55MP; the A1 is the most affordable; only the Pentax K-3 Mark III is weather sealed.
Different kinds of camera — their specs aren't comparable, so read the rows as facts, not a contest.
32 specs side by side·14 genres scored·UK prices from Wex Photo Video and Clifton Cameras
How to read this page. Highlighted cells win that row on the spec alone. Genre scores are the engine's base scores (enthusiast, photo and video); Camera Match re-weights them for your level and priorities. Price buttons are affiliate links; the price you pay is the same.
Pentax
Pentax K-3 Mark III 2021
Best for DSLR enthusiasts & outdoor photographers
£1048
used today at eBay
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Verdictwhich should you buy?
Pentax K-3 Mark III — Dslr Enthusiasts & Outdoor Photographers: The finest APS-C DSLR ever made — class-leading weather sealing, optical viewfinder, 5-axis IBIS, and extraordinary build for photographers committed to DSLR.
Who should buy what
Pentax K-3 Mark III (2021)
is the right camera for you if…
- DSLR photographers who want the finest APS-C optical viewfinder experience
- Outdoor and weather photographers who need robust all-weather sealing
- Pentax lens owners who want to use their existing K-mount glass
- Photographers who prefer optical viewfinders and refuse to switch to mirrorless
Full specificationsthe better value in each row is highlighted
| Specification | A1Antigravity · 2025 | Pentax K-3 Mark IIIPentax · 2021 |
|---|---|---|
| Price | £909Best | £1,048 used |
| Sensor | — | 25.7MP APS-C BSI CMOS (AA-filterless) |
| Resolution | 55.0MPBest | 25.7MP |
| Video | — | 4K/30p, 1080p/60p |
| Autofocus | — | SAFOX 13 phase-detect, 101-point (25 cross-type) |
| Stabilisation | — | 5.5-stop 5-axis IBIS (Shake Reduction III) |
| Burst Rate | — | 12fps |
| Battery Life | — | 800 shots (CIPA) |
| Weight | — | 820g (body only) |
| Dimensions | — | 134.5 × 103.5 × 73.5mm |
| Weather Sealed | Not weather sealed | YesBest |
| Viewfinder | — | Optical pentaprism, 100% coverage, 1.05× magnification |
| Screen | — | 3.2" fixed touchscreen |
| Mount | Fixed lens (360°, f/2.2) | Pentax KF-mount |
| Memory Cards | — | Dual SD UHS-II |
| Connectivity | — | USB-C, Wi-Fi, Bluetooth |
| Take-off weight | 249 g | — |
| Fly without registering | Yes — under 250 g | — |
| Flight time | 24 min | — |
| Wind resistance | 10.7 m/s | — |
| Obstacle sensing | Omnidirectional | — |
| Video link | OmniLink 360 | — |
| Range | 6.0 km | — |
| Top speed | 16.0 m/s | — |
| Cameras | 1 | — |
| RAW stills | Yes | — |
| Vertical shooting | Not supported | — |
| Intelligent flight | Subject tracking, waypoints, return-to-home | — |
| Storage | 20 GB built in + microSD slot | — |
| Controller in the box | Vision goggles + Grip Motion Controller | — |
| FPV | Yes, goggles in the box | — |
| Folds | Yes | — |
Wins the row — price, resolution, burst, battery, weight and sealing are compared; text specs aren't ranked.
How they score by genreengine base scores out of 10
Genre
A1
Pentax K-3 Mark III
Portrait
—
6.6/10
Street
—
5.2/10
Travel
—
5.3/10
Wedding & Events
—
7.0/10
Filmmaking
—
5.4/10
Documentary
—
6.4/10
Sports & Action
—
6.8/10
Landscape
—
6.2/10
Wildlife
—
6.8/10
Casual
—
4.1/10
Food
—
5.4/10
Macro
—
4.9/10
Architecture
—
6.0/10
Astrophotography
—
6.5/10
Scores come from the same engine as Camera Match: verified specifications weighted by what each genre needs, with documented adjustments. The product page and this table show the enthusiast base score. See how scores are calculated →
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