I have just received this lens today. I'm hoping to get out and try it with some moonage tonight but currently the clouds are starting to roll in! Here is a shot of the school opposite my house with a range of about 400 meters. Not bad and I agree that the focus can be very precious. The focus was helped by the A7S having focus peaking where you can magnify the focus area up to 8X.
I'll try to get some astro shots up as soon as I can.
All the best
Paul
