Absolutely incomparable lens .. Sharp through the entire registry.
at 70mm focal length, you get a terrible fine depth of field even at higher aperture.
The image quality can almost compete with Sony Zeiss 55mm F / 1.8 which is the top 3 of Dx0mark in sharpness.
The disadvantages would be that it is a heavy and large aperture (considerably larger than 24-70 F4 from Sony) and that it does not have IS (Good for filming. But A7 series've also integrated stabilizer. But if you want to use the loophole to a house without it, it can become problematic.
This is my "go-to" lens that sits on all the time .. Will as shocked every time I import the images to the Lightroom ...
Do you have the money and are looking for a zoom that takes equally sharp images as prime gaps. BUY