Just a few thoughts on the new Sony prime lenses. The new lenses comes with something called the SAM, which stands for the Smooth Autofocus Motor.
Although the Sony DSLR bodies are motorized, it is complemented by the built-in motor in the lens. My guess is that this probably works similarly to how a Nikon AF-S lens will work on the Nikon D80/D90/D300/etc.
For the new Macro lens, the DT SAL30M28, it’s minimum focus distance (MFD) is just 2cm! That’s really close!
The new external flash is small enough to fit into our shirt-pockets, weights about the same as a small mobile phone and for those who are somehow shy about have a large piece of thingamabob sticking from the top of their cameras, this flash can be “folded away” so that it is not obvious. It can also probably be used on the Alpha 900 as the wireless flash trigger (as the Alpha 900 does not have a built in flash) and I would not be surprise if it can also complement Sony Cybershot cameras (if not present, then future models).
I look forward to owning the SAL50F18.