I have to say if it is a Voigtlander get it and if on sale it should be in your pocket. Before Sony had lenses ready for their A7 line (I started with the A7S in 2014) I was using adapters for my old Canon FD lenses and one day I found the Voigtlander 12mm f/5.6 using the Leica VM Mount and I fell in love with ultra wides (it had screw on filters and so so small) even got the 10mm f/5.6 when it came out and use even for astro milky way (even awesome at f/5.6 with the new sensors) a one shot pano. They will remind you of the film days they are so small, like an Olympus camera lens of old. To say the most great glass always in my bag for that one capture, the tool you wish you had. Look day shots are mostly f/11 to f/16 or smaller so do not turn away from a f/5.6 and yes manual but is that not what Sony was first great at and still is, put your thinking cap on and now with IBS you no longer need lens IS. Enjoy a small lens for once!!!!