The biggest obstacle to me providing any useful feedback is that it basically came when DST ended, and it's dark by the time I'm done work. Any comment I can give has been covered by reviews already...

It's light, it's sharp on both an R8 and R7. I have no idea what the unprocessed RAW looks like, but coming out of LR, yes there's less sharpness in the corners, but it's still good. I haven't tested all sorts of conditions, but the bokeh looks good to me.

Perhaps if you can say what you're hoping to get clarified I can try to take some shots to give you an answer. I'm sure my back-lit living room dog shots aren't what you're looking for, but I've posted them anyway. I think these are all exported at 4K, and I'm pretty sure Flickr lets you download these at full size.


28-70mm f/2.8 at 28mm on R8 by Dave E, on Flickr


28-70mm f/2.8 at 32mm on R8 by Dave E, on Flickr
(Note this one is heavily boosted shadows, if there's a loss of detail in Bran, don't hold that against the lens)


28-70mm f/2.8 at 70mm on R8 by Dave E, on Flickr


28-70mm f/2.8 at 70mm on R7 by Dave E, on Flickr