Beware, The build quality of sony zeiss lenses is very bad. This is why.
I have a "Sony SAL 24 mm 2.0" mounted on a A900. Last year the "Diaframa glass" of the lens was dropped into the lens, because it is glued from the inside.
I send it to repaired..According to Sony this will cost me 922.42 Euro repair cost and another 75 euro on investigation.
The new value is 1100 euro.
This lens is optical very good, but this is a design failure. So who will ever will buy this piece of crap..
My conclusion...It is a shame that Zeiss put it name on this lenses.......
Greetings Rob