The Pentax K-5 II is a sixteen-megapixel digital SLR camera with an APS-C sized sensor and a completely new Safox X AF module that remains operational down to -3EV. Coupled with an upgraded AF algorithm, the camera is claimed to deliver exceptional AF performance, including such features as a select-area expansion function, which automatically tracks the subject even when it moves away from a pre-assigned select point. Launched in conjunction with the Pentax K-5 II is the Pentax K-5 II s that comes without an anti-aliasing filter for superior resolution. The Pentax K-5 II is available from early October for £799.99/$1,199.95, while the Pentax K-5 IIs carries a body-only price of £949.99/$1,299.95. The K-5 II is also available in a kit with the 18-55mm WR lens (for £869.99/$1349.95) and in a bundle with the 18-135mm WR zoom (for £1,119.99/$1,549.95).