The K-5 II’s magnesium alloy casing not only is rigid, lightweight and shock-resistant, but also provides outstanding electromagnetic shielding. Its chassis, which houses core components including the mirror box, is made of high-rigidity, corrosion-resistant stainless steel. As a unit, the K-5 II’s body has been built with the durability and strength to withstand years of heavy-duty use.
Both the K-5 II body and the optional D-BG4 Battery Grip feature a dependable dustproof, weather-resistant construction. In addition, the dustproof, weather-resistant AW series and simplified weather-resistant WR series offer a wide selection of interchangeable lenses.* As a unit, these components form a highly airtight digital imaging system that performs superbly even in the challenging outdoor conditions.
* AW stands for All Weather, while WR stands for Water Resistant.
This innovative mechanism removes all dust particles clinging to the CMOS image sensor unit using supersonic vibrations. Driven by a piezoelectric element, the Low-pass filter (made of optical glass in the K-5 II) vibrates at supersonic speed — approximately 60,000 to 90,000 times per second — to effectively shake off even sticky dust particles.
This system detects dust particles clinging to the CMOS image sensor, and indicates their position on the LCD monitor. Once the dust particles have been identified, they can be easily removed on the spot by activating the DR II mechanism, through the use of a dust blower, or by using the optional O-ICK1 Image-Sensor Cleaning Kit.
The K-5 II has been subjected to a series of cold-resistance tests at freezing temperatures down to -10°C. Every single operation was closely examined during these tests, including the operational stability of electronic circuits, the operating precision of mechanical parts, the strength and response of optical components, and the fluctuation of battery voltage. That’s why the K-5 II always delivers solid, dependable performance, even for shooting sessions in freezing environments.
Note: Battery performance declines as the temperature goes down. When shooting in cold environments, the user is advised to carry spare batteries and keep them warm by storing them in an inside pocket.
