First off- this isn't a review, it is just my impressions, as I only got about 10 minutes with it.
I like the concept of the Alpha 77, especially when you get fast and accurate "live view" for every shot you take. Seriously, the Sony SLT live view blows the D7000 live view out of the water. I also like the weight of the camera- it seems about 3/4 the weight of the D7000.
I also really like the shape of the grip- the D7000 grip just seems like a rectangle. On the A77 there really is space for your fingers and it seems more "tailored".
I couldn't figure out the AF system of the camera, so I don't know how accurately it focuses. However, the frame rate of the camera is incredibly impressive. The buffer fills up pretty quickly though.
However, I didn't like the build quality of the camera. It's supposed to be a magnesium body but it happens to come across as plasticy for some odd reason. The buttons also seemed slightly loose, especially around the On/Off button. I'm not sure if it's because it was a pre-owned camera or if it's a problem with every A77.
The major problem I see with the camera is that the buttons on the top plate are hard to reach, especially if you're trying to spin one of the dials to change a parameter (ISO, etc.). It seems like a mashup of Nikon and Canon ergonomics with neither of the build quality. The click wheels are in front and back (like Nikon) and have a terrible feel to them. However, the row of buttons up top (like Canon) make it hard to contort your fingers to spin the rear or front dial. Seriously, maybe I have small hands, but how are you supposed to change it one handed? It's the same problem with Canon cameras I feel.
The top LCD is also very narrow and shows very little data. Also, maybe it's a changeable menu parameter, but it even turns itself mostly off and shows very little data even if the camera is turned on but on standby mode. You need to physically be shooting or changing parameters for it to show anything at all.
The OLED viewfinder is very detailed and bright. However, there are delays when the camera is trying to figure out whether you're using the rear LCD or the viewfinder via the eye detector. You may miss shots that way. It's not a perfect solution yet and I would say it's 90% there. It's also nice to see changes to exposure instantly. It's also a hoot to change menu parameters via the viewfinder.
I got used to rotating the lenses to the left to unscrew a Nikon lens, so I tried to rip the lens off its mount when I tried to change lenses on the A77. Whoops.
The only lens I got to try was the Sigma 16-50 2.8. It was okay I guess.
It's a lot of fun using cameras from manufacturers. I can definitely see the value behind using SLT technology. Other than the slight light loss and batter consumption, it seems like the way future manufacturers will go.
What do you guys think of this camera?
Nikon D7000/ Nikon D40/ Nikon FM2/ 18-135 AF-S/ 35mm 1.8 AF-S/ 105mm Macro AF-S/ 50mm 1.2 AI-S