The Pentax Optio A40, is a 3x zoom compact featuring a large 1/1.7" sensor for improved low-light abilities. CCD-shift image stabilization keeps the shakes at bay whilst the videos are recorded in DivX format allowing for smaller file sizes. Shutter-priority and manual exposure are here alongside Pentax's customary automatic modes. The camera was available in October of 2007 with a recommended price of US $299.95. It is a 12 megapixels digital camera with a 37 to 111mm lens (35mm equivalent). On the front of the camera is the letters SR and this SR mechanism is unique to PENTAX, and corrects camera shakes when photographing still images by shifting the image sensor (CCD) horizontally and vertically in relation to the amount of shaking that the high-accuracy gyro sensor detects. It also has digital SR (Shake Reduction) mode automatically adjusts sensitivity, to as high as the ultrahigh sensitivity of ISO 3200 according to the brightness of the subject, and effectively reduces camera shakes and subject blurring when photographing still images. The camera also has “Face Recognition AF&AE” function that automatically detects and focuses on faces. Other features are a 2.5 inch LCD screen with approximately 232,000 pixels, 3X optical zoom and 6X digital zoom for a maximum of 17.9X magnification, Video recording function captures movies at 30fps (frames per second) at sizes up to 640x480 pixels in DivX® (MPEG-4) movie format, 18 shooting modes plus 15 playback modes, 21.0 MB of built-in-memory, Compatible with SD/SDHC memory cards, red eye compensation function for flash shots, Image sizes of 640 x 480 to 4000 x 3000, f2.8 to 5.4 lens, Auto ISO from 50 to 800, shutter speeds of 4 seconds to 1/2000 of a second, built-in flash, self-timer 2 to 10 seconds, 2.0 USB port, AV out socket, DC in socket, ¼ inch 20 thread tripod socket, and it is all powered by a D-Li68 Li-Ion battery.