Sigma releases the new APO 150-500mm F5-6.3 DG OS HSM lens for Sony and Pentax mounts. The lens has an equivalent field of view of a 225-750mm when used on digital SLR cameras with an APS-C size image sensor. Sigma's original OS (Optical Stabilizer) function offers the use of shutter speeds approximately 4 stops slower. This lens is equipped with a rear focus system that minimizes fluctuation of aberration caused by focusing. It is ideal for sports, wildlife and landscape photography with handheld shooting...

Canon announces a firmware update for the EOS 5D Mk II, which adds 24 and 25 fps recording. Furthermore, a new histogram display for shooting movies in manual exposure, shutter- and aperture-priority have been added, and exposure modes will also be available in movie mode. Improved audio will allows you to set record levels using a sound-level meter displayed on the LCD display and audio sampling has been increased from 44.1 KHz to 48 KHz. Update: Firmware version 2.04 now released...