The Sony Alpha 57 is one of four APS-C D-SLR cameras in Sony`s current lineup. It`s one step up from the entry-level Alpha 37, and like its siblings sports a fixed mirror design and an electronic viewfinder, a departure from classic SLR cameras that use a moving mirror and optical viewfinder for through-the-lens viewing."
Any major computer upgrade generally requires a full software reinstall too. No so if you heed the advice in the guide to Upgrading a Motherboard without Reinstalling. PCSTATS Tips