I'm curious about the performance of this lens, particularly at f2.8 and f8.
If you have this lens and have a moment, could you post a sample of a closely focused subject (1-2 metres) with some background blur at f2.8? Could you also post a 100% crop so we can see the resolution at this aperture?
An f8-11 sample would be interesting too to see the maximum resolution performance.
As there are various versions of this lens, please state which one you have. Thanks!