The a58 makes for a wonderful companion camera, or a great starting point if you’re just breaking into the DSLR realm. With an appealing design and intuitive layout (both the buttons and the menu system), it makes for a solid choice for anyone really. It should also be said that you have to be willing to break from optical viewfinders as Sony has abandoned the form in favor of EVFs and its SLT (Single Lens Translucent) technology. It can get a bit noisy in poorly lit situations, but it can do wonders in bright light. I’m a bit of a curmudgeon when it comes to viewfinders

http://www.thephoblographer.com/2013/06/20/review-sony-a58/

Continuous autofocus mode lag time was 0.132 second, and manual focus was quite fast at about 0.082 second. When prefocused, shutter lag was 0.054 second which is very fast for an SLR-class camera.

Battery life is pretty good for a consumer-level interchangeable lens camera equipped with an electronic viewfinder, and about average compared to traditional consumer DSLRs using an optical viewfinder.

We could say the Sony A58 does a very good job in the print quality department from JPEGs, but when you consider its body-only street price of somewhere under $600, it'd be fairer to say it does an excellent job.

Replacing both the Sony A37 and A57 DSLRs in one fell swoop, the Sony A58 offers advanced photographic features and picture-taking skills at a consumer-friendly price. The A58 takes a big step up in resolution with a new 20.1-megapixel APS-C sensor, and it delivers pictures that are sharp and detailed, rivaling the image quality of much more expensive cameras.

http://www.imaging-resource.com/PRODS/sony-a58/sony-a58A.HTM