Pentax K3 Mark III Review
The Pentax K-3 Mark III is a DSLR in a mirrorless world. We found a fantastic sensor paired with dated features—a camera built for a very specific photographer.
The 30-Second Version
A charming anachronism. Fantastic sensor and a lovely lens kit, but it's a DSLR swimming against the mirrorless tide. Only for Pentax loyalists or optical viewfinder purists.
Overview
Look, the Pentax K-3 Mark III is a camera for a very specific person. It's a DSLR in a mirrorless world, and it knows it. The one thing you need to know is that this isn't a jack-of-all-trades. It's a rugged, purpose-built tool for still photography, and it comes with a fantastic little 40mm pancake lens and a battery grip right in the box. If you're chasing the latest video features or lightning-fast autofocus for sports, you're in the wrong aisle. But if you want a solid, no-nonsense camera that feels great in the hand and takes lovely photos, this kit has a certain charm.
Performance
The sensor is the real star here. It's well above average for an APS-C sensor, delivering sharp, detailed images with great color. That's the good surprise. The less-good surprise is that almost everything else is just... okay. The autofocus is middle of the pack, the burst shooting is underwhelming, and the video capabilities fall behind most modern cameras. It's a classic case of one standout feature surrounded by a lot of average ones.
Pros & Cons
Pros
- Strong sensor (77th percentile) 77th
Cons
- Below average video (29th percentile) 29th
- Below average connectivity (33th percentile) 33th
Specifications
Full Specifications
Sensor
| Size | APS-C |
Autofocus
| AF Type | Autofocus |
Value & Pricing
The price range is absolutely wild, from $367 to over $76k, which tells you the listing data is a mess. Ignore the crazy high end. At a realistic street price, this kit's value hinges entirely on how much you love that 40mm lens and the DSLR experience. If you're a Pentax shooter adding a body or someone who craves an optical viewfinder, it's worth considering. For everyone else, there are better values with more modern tech.
vs Competition
Stack this up against the Fujifilm X-T30 II or the Sony A7 III, and the differences are stark. The Fuji offers a similar classic feel but in a mirrorless package with better autofocus, much better video, and Fuji's legendary film simulations. The Sony A7 III is a full-frame beast that, while possibly more expensive body-only, runs circles around the Pentax in autofocus, video, and low-light performance. The Pentax kit makes sense only if the optical viewfinder and that specific lens are non-negotiable for you.
| Spec | Pentax K3 Mark III | Sony Alpha Sony a7 III Mirrorless Camera | Panasonic Lumix S Panasonic - LUMIX S9 Full Frame Mirrorless Camera | OM System OM OM SYSTEM OM-5 Mark II Mirrorless Camera with | Nikon Z Nikon Z6 II Mirrorless Camera | Fujifilm X-T FUJIFILM X-T30 III Mirrorless Camera (Black) |
|---|---|---|---|---|---|---|
| Type | - | Mirrorless | Mirrorless | Mirrorless | Mirrorless | Mirrorless |
| Sensor | - | 24.2MP Full Frame | 24.2MP Full Frame | 21.8MP Four Thirds | 24.5MP Full Frame | 26.1MP APS-C |
| AF Points | - | 693 | 779 | 121 | 273 | 425 |
| Burst FPS | - | 10 | 30 | 30 | 14 | 20 |
| Video | - | 4K | 4K @60fps | 4K @24fps | 4K | 6K @60fps |
| IBIS | false | true | true | true | true | false |
| Weather Sealed | false | true | false | true | true | true |
| Weight (g) | - | 649 | 590 | 371 | 635 | 329 |
| Compare | Compare | Compare | Compare | Compare |
| Product | Af | Evf | Build | Burst | Video | Sensor | Battery | Display | Connectivity | Stabilization |
|---|---|---|---|---|---|---|---|---|---|---|
| Pentax K3 Mark III | 42.5 | 42.8 | 36.4 | 36.3 | 28.7 | 77.1 | 48.1 | 35.1 | 33.4 | 40.9 |
| Sony Alpha a7 III Compare | 97.7 | 93.4 | 97.9 | 76.7 | 74.6 | 94.9 | 98.8 | 91.7 | 96.1 | 90 |
| Panasonic Lumix S 9 Full Frame Compare | 98.4 | 93.4 | 58.7 | 92.1 | 88.6 | 94.9 | 97.5 | 95.5 | 86 | 98.6 |
| OM System OM 5 Mark II Compare | 92.1 | 94.3 | 93.2 | 92.1 | 59.2 | 70.9 | 95.5 | 95.5 | 90.4 | 98.6 |
| Nikon Z 6 II Compare | 94.5 | 97.5 | 97.6 | 83.6 | 82.6 | 96 | 48.1 | 86.9 | 96.1 | 90 |
| Fujifilm X-T 30 III Compare | 96.6 | 87.9 | 79.1 | 87 | 97.6 | 88.3 | 95.9 | 86.9 | 90.4 | 40.9 |
Common Questions
Q: Is this a good camera for a beginner?
Not really. Our scores put it in the bottom third for beginners. DSLRs have a steeper learning curve than modern mirrorless cameras, and the autofocus isn't as forgiving. You'll progress faster with something more intuitive.
Q: How's the video quality?
It's bad, honestly. It scores in the 29th percentile. You get 4K, but it's barebones with mediocre autofocus. If video is any part of your plan, look at literally any modern mirrorless camera instead.
Q: Is the battery grip necessary?
It's a nice bonus for extended shooting, but the camera's battery life is about average on its own. The grip mainly adds a more comfortable vertical shooting experience and extra heft.
Who Should Skip This
Skip this if you're looking for a modern, do-it-all camera. If you want great video, fast autofocus for kids or pets, or a lightweight travel companion, this isn't it. Go get a Fujifilm X-S20 or a Sony ZV-E10 instead.
Verdict
This is a niche recommendation. We can't recommend the Pentax K-3 Mark III kit to most people. The world has moved on to mirrorless, and for good reason. However, if you are a dedicated Pentax user looking to upgrade, or a photographer who genuinely prefers the optical viewfinder experience of a DSLR and loves the 40mm focal length, this bundle is a solid way to get a capable stills camera with a great little lens. For everyone else, look at Fujifilm or Sony.