I got the new Sony 90mm macro lens this morning and tried it out on my a7 at a butterfly house. The lens looks about the same size like the Canon 100mm L IS I had before. It feels lighter than it looks. I had the Nikon 105mm VR macro lens too but I didn\'t use it much before I sold it.
The bad: the AF of the Sony 90mm is very very slow, painfully slow, may I add. It hunts frequently. Granted, all the butterfly shots were taken inside a glass house but even outside it felt slow in the flower shots. Definitely no in the league of the Canon 100mm L and the Nikon 105 VR. Not sure if it had anything to do with the A7. Will try it on the A6000 to see if it\'s any better.
The good: The pictures look very sharp and contrasty, nice bokeh too, to my eyes. Not much vibrancy and saturation increase are required in Lightroom.