The Pentax K-3 Mark III is Pentax's flagship APS-C DSLR, rated at approximately 300,000 actuations. Shutter count is stored in the Pentax MakerNote of PEF RAW files and readable via ExifTool — PEF is not yet supported for direct browser-based reading in shuttercount.app.
Check Shutter Count →The Pentax K-3 Mark III (2021) is the current flagship of Pentax's APS-C DSLR line. It features a newly developed 25.73 MP APS-C CMOS sensor (without an optical low-pass filter), a 3.7 MP optical viewfinder with 100% coverage, 12 fps mechanical burst, 92-point weather sealing, built-in GPS with Astrotracer II, and 5.5-stop IBIS with Pixel Shift Resolution. The shutter is rated at approximately 300,000 actuations.
| Model | Release | Sensor | Rated Shutter Life | RAW Format |
|---|---|---|---|---|
| Pentax K-3 Mark III | 2021 | 25.73 MP APS-C | ~300,000 | PEF / DNG |
| Pentax K-1 Mark II (full-frame sibling) | 2018 | 36.4 MP full-frame | ~300,000 | PEF / DNG |
| Nikon D500 (competitor) | 2016 | 20.9 MP APS-C | 200,000 | NEF |
| Canon EOS 7D Mark II (competitor) | 2014 | 20.2 MP APS-C | 200,000 | CR2 |
exiftool -ShutterCount yourfile.PEF. Pentax embeds the shutter count in the Pentax MakerNote of every PEF file. This method is reliable across firmware versions.| Actuation Count | % of Rated Life | Assessment |
|---|---|---|
| 0 – 15,000 | 0 – 5 % | Very low use — near new |
| 15,000 – 75,000 | 5 – 25 % | Low use |
| 75,000 – 180,000 | 25 – 60 % | Moderate use — normal for active shooters |
| 180,000 – 250,000 | 60 – 83 % | High use — negotiate price |
| 250,000 + | 83 %+ | Near or past rated life |
The K-3 Mark III shutter is rated at approximately 300,000 actuations. This is significantly higher than competing APS-C DSLRs (typically 100,000–200,000). The high rating reflects Pentax's engineering focus on shutter durability in their pro-grade bodies.
Yes. Pentax stores the shutter count in a MakerNote tag within PEF files. ExifTool reliably extracts this with exiftool -ShutterCount file.PEF. This is the recommended method for verifying the count on a used K-3 Mark III. If the seller saves in DNG format, the Pentax MakerNote may not be present in the DNG — request a PEF sample.
The K-3 Mark III introduced a completely new 25.73 MP sensor (vs 24.35 MP in K-3/K-3 II), a redesigned body with a deeper grip, improved optical viewfinder with 0.95x magnification, built-in GPS (versus optional accessory in predecessors), Astrotracer II, and significantly enhanced PDAF coverage. The shutter rating (~300,000) is consistent across all three generations.
Inspect: IBIS/SR function (test at slow shutter speeds), 92-point weather sealing gasket condition, GPS functionality, optical viewfinder clarity, the dual SD/CF express card slot operation, and battery health (D-LI90P). Given the K-3 Mark III's popularity with wildlife and astro photographers, check for sensor dust and inspect the front element area for any impact marks.