Pentax's enthusiast APS-C DSLR — 16.3MP with excellent image quality, weather sealing, and in-body SR.
The Pentax K-5 was released in 2010 as the mid-range Pentax K-mount DSLR, featuring a 16.3MP APS-C CMOS sensor with 77 weather protection seals and -10°C freeze-proofing. 7fps continuous shooting. 1080/25fps video (Full HD; 25fps only). D-LI90 battery. At approximately 740g with battery and card.
16.3MP APS-C CMOS sensor (23.7×15.7mm). 1080p/25fps video (Motion JPEG/AVI); 720p/25/30fps. 7fps continuous shooting. 77 weather-resistant seals; magnesium alloy over stainless chassis; freeze-proof to -10°C. D-LI90 battery. Approximately 740g with battery and card. Pentax K-mount. Sensor-shift Shake Reduction (SR) IBIS.
The K-5's comprehensive weather sealing — 77 individual seals with -10°C freeze protection — was a premium specification for APS-C DSLR bodies at its price tier in 2010, competing with the Nikon D7000 and Canon 7D. The in-body Shake Reduction provides stabilisation for all Pentax K-mount lenses including older manual-focus FA and A lenses. The 1080p video is limited to 25fps (no 30/60fps in Full HD).
On the used market the Pentax K-5 is affordable as a weather-sealed APS-C DSLR. Condition checks: D-LI90 battery health, weather seals (inspect for damage), shutter count, SR IBIS operation. 1080p video limited to 25fps. Compatible with all Pentax K-mount lenses.