PENTAX K-3 Mark III DSLR Camera
The Pentax K-3 Mark III is a 25MP APS-C DSLR camera — with 4K video and in-body stabilization. Check GearFocus for current availability, with buyer protection on every purchase.
PENTAX K-3 Mark III DSLR Camera
Get notified when one lists.
We'll text or email you the moment a Pentax K-3 Mark III is listed on GearFocus.
Have a Pentax K-3 Mark III sitting in your bag?
You'd be the first listing for this model.
Serious buyers are already watching — list yours in minutes.
Available Now on GearFocus
Overview — Pentax K-3 Mark III
Key Features — Pentax K-3 Mark III
25MP APS-C CMOS Sensor: Delivers 25MP resolution with a 1.5x crop factor, powered by the PRIME V processor with Accelerator Unit II for fast image processing and reduced noise.
5-Axis SR II Stabilization: Sensor-shift image stabilization across five axes compensates for camera shake without requiring stabilized lenses.
SAFOX 13 Autofocus System: 101 phase-detection points including 25 cross-type points, paired with Real-time Scene Analysis and subject tracking for reliable focus acquisition.
Optical Pentaprism Viewfinder: Traditional DSLR optical viewfinder provides a bright, lag-free view for precise framing and shooting.
Triple Weather Protection: Magnesium alloy body is rated dustproof, weather-resistant, and cold-proof down to -10°C for use in harsh outdoor conditions.
12fps JPEG Burst Shooting: Captures JPEG sequences at up to 12fps, with RAW burst support for up to 32 consecutive frames.
Specifications — Pentax K-3 Mark III
| Spec | Detail |
|---|---|
| Use Cases | Travel |
| Type | DSLR |
| Sensor | APS-C |
| Resolution | 25MP |
| Processor | PRIME V with Accelerator Unit II |
| ISO Range | 100 – 1600000 |
| AF System | Phase Detection |
| AF Points | 101 (25 cross-type) |
| Max Photo Resolution | 6192x4128 |
| Burst Rate | 12 fps fps |
| Max Video Resolution | 4K |
| Max Frame Rate | 30fps |
Description — Pentax K-3 Mark III
The Pentax K-3 Mark III is a 25MP APS-C DSLR housed in a magnesium alloy body with comprehensive weather-sealing rated dustproof, weather-resistant, and cold-proof to -10°C — making it a strong choice for photographers who work in challenging outdoor conditions. The SAFOX 13 phase-detection autofocus system covers 101 focus points, including 25 cross-type, paired with a Real-time Scene Analysis System and subject tracking capability. The in-body SR II 5-axis sensor-shift stabilization helps manage camera shake across a wide range of shooting scenarios.
For speed, the camera delivers up to 12 fps burst shooting in JPEG and supports RAW bursts of up to 32 frames. The optical pentaprism viewfinder provides a traditional DSLR optical viewing experience. Video capture tops out at 4K (30p/24p) and Full HD (60p/30p/24p) in 8-bit color, with sRGB, Flat, and Custom Image color profiles available.
Dual SD/SDHC/SDXC UHS-II card slots manage file storage, and the 3.2-inch fixed touchscreen LCD resolves at 1,620,000 dots. ISO extends from 100 to 1,600,000, and the D-LI90 battery is rated for 800 shots. The body measures 134.5 x 103.5 x 73.5 mm and weighs 820g.
Pros — Pentax K-3 Mark III
- ✓Comprehensive weather-sealing rated dustproof, weather-resistant, and cold-proof to -10°C in a magnesium alloy body
- ✓Wide ISO range from 100 to 1,600,000 for flexible exposure control in varied lighting
- ✓SAFOX 13 AF system with 101 phase-detection points, including 25 cross-type points, plus subject tracking
Cons — Pentax K-3 Mark III
- ✗Fixed (non-tilting, non-articulating) touchscreen limits shooting from low or high angles
- ✗Video limited to 8-bit color depth with no USB-C port for modern high-speed data transfer
- ✗No eye-tracking autofocus despite the advanced SAFOX 13 system
Reviews — Pentax K-3 Mark III
Videos — Pentax K-3 Mark III
Pentax K-3 Mark III Review (+ comparison to Nikon D500) — DPReview TV