A good news to all Sony Alpha A850 and A900 DSLR camera’s owner. Today you can upgrade your camera’s firmware for free at Sony official site. We will give the site-link at the end of this article. And according to their press release report, This new firmware will give improvements such as increasing the camera’s autofocus response speed (improved AF motor control and smarter distance detection of out-of-focus objects), expands the range of exposure value and exposure bracketing range.

Creative shooting enhancements for full-frame a cameras A free firmware upgrade refines shooting responses and creative options with the a900 and a850 35mm full-frame DSLR cameras by Sony.

Autofocus is quicker and more responsive than ever, thanks to improved AF motor control and smarter distance detection of out-of-focus objects.

Exposure bracketing range has also been increased from a maximum of 4.0EV (three shots at -2EV, 0EV, +2EV) to a maximum of 6.0EV (-3EV, 0EV, +3EV). This wider range gives added flexibility when capturing multiple frames at different exposure values – for example when acquiring images for the creation of powerful post-shooting HDR effects.

a new menu option allows shutter release to be enabled, even when the camera body doesn’t detect an attached lens. It’s useful for specialist applications such as astrophotography when the camera is attached to a telescope.

Click here to get the new firmware for your Sony Alpha A850 and A900

Source
http://support.sony-europe.com/dime/DSLR/dslr.aspx.