So, I decided to purchase the a37 because of its wonderful dimunitive size. I mean its advertised that it has the same sensor, advertised that the Bionz engine is the same as the a77 and the only thing it seems to fault on is the lower rear screen and speed buffers and speed of fast shooting. I am here to tell you with the same Sony 35mm f1.8 Alpha lens, it is NOT EQUAL in speed of focus and function based on my night time shooting. Look, I am a HUGE Sony fanboy and I was willing to sacrifice the rear screen as well for the size. BUT, once you've gotten use to 950K screen resolution and you go down to 230K, FORGET ABOUT IT. So dim and viewing angles are SO POOR, you wonder WHY Sony even put the tilt screen on it. YOU CANT see it in the other angles! Then there is the viewfinder which the reviews and specs say its the exact same one as the a57, advertising the TrueView, something, well I had read on Cnet that she thought the view finder looked dim and SURE ENOUGH...IT IS NOT Bright as the a57! This is huge for me to get over. Also, NO horizontal or verticle axis balance meter and that is another HUGE deal. If you've gotten use to it in the a57 it takes the guess work out of if your pictures are balanced and most of mine I had to adjust afterwards but you never can really be sure IMO. Ok, so back to the focusing. IT WAS NOT GOOD compared to the a57. Daytime, NO problem, my daytime pics looked GREAT as usual but I am into nighttime photography and IMO, it did not focus OVER HALF the time. It would hunt and just be all off! I HATE that I have to write this but IF you decided you dig the SLT Sony's PLEASE, upgrade to the a57 and you will be set! It's got to be something they did in memory or something to cheapen the product. If you read all the reviews from the a57, they all say ITS QUICK as hell, SNAPPY, FAST to focus. I think sure they say its the same Bionz engine but if the fast frame shooting is lower by many frames and supposedly everything is the same, WHY is it slower? Could it be to save the battery, voltage has been reduced and that's why focusing was way down? Could that be the reason why the viewfinder is noticeably dimmer? Build wise, its SOLID, but again, that rear LCD screen can not be dismissed. ITS AWFUL! and you know how on the a57, you can even flip the screen completely around so that the back of the screen is solid black plastic, well you can't do that on the a37. Yes I also know the argument that you don't need to be looking at the screen to compose or check for pics but I am telling you, it sure IS NICE to have and the cheapness when I compare it to my a57 is IMO, I can't live with. Again, if it were just that I would be ok, but I don't know in seconds or official conditions as to why I sense it is slower but IT IS SLOWER ANd I CANNOT see any reason for you to chose this over the a57! It's not worth the $100 savings. Performance and speed is essential to me. Now, I guess, if your just going to sit around taking pics of wall flowers...I guess this works and FYI, the a57 is not that bad in size and weight. It's just I was an idiot and am searching for the holy grail of SIZE but ease of lens. I LOVE SONY but this product shot too low and is a disservice to the lineup.