Parental Guidance advised.
So, I now have an AF lens for my Sony FE cameras. And it is now the plural since I picked up the A7 / 28-70mm kit yesterday. A Sony kit zoom then........Mmmm. However, while it isn't the best lens I've ever used, it's actually rather good. The A7r sensor helps with that obviously. Firstly a couple of myths that need dispelling.
'The AF on the Sony A7 / A7r is slow' Well, not true. It's actually very good with the zoom AND it works very well in low light, something the 'speed kings' of m4/3 seriously struggle with (But we don't talk about that, too 'inconvenient').
'The 28-70mm zoom is soft with poor corners'. Again not true. Probably the best Sony kit zoom ever made and yes I know that's not saying much, but my initial tests show that it's a very decent 'kit zoom' and certainly better than I was expecting. And I guess Sony really had to produce something that didn't destroy what the A7 and A7r can create.
I have included, much against my better judgement, a 'brick wall' test later in the post. This shows that distortion is well controlled and the corner sharpness, even wide open, is pretty good. I'm certainly seeing none of the decentering (centre significantly sharper than edge) problems of the Sony FF 28-75mm, APS-C 16-50mm or the softness of the NEX 18-55mm.
For those who use Adobe raw conversion, I should mention that there is already a lens profile for this lens. Using it makes a few tweaks to correct lens distortion. It really isn't that much and less than I see on many of Nikon lenses, including primes.
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