I'm still testing this lens and playing around with it. In particular I forgot to fine-tune the autofocus, and I need to retest for sharpness across the frame which I'm not sure about yet. Still, here are a few preliminary shots taken fairly close up with deliberately shallow depth of field. These show the character of the out-of-focus areas and the transition from areas in focus to areas out of focus.
All have been cropped to a smaller or larger degree. All photos were taken using matrix metering; I should have used spot metering for the flowers. In post processing, the flower shots had to be underexposed by a stop with strong highlight reduction to deal with severe clipping in the red channel. The camera was a D810. All photos were taken handheld.
This first one is at f/5.6.
_DSC2236 by
Bill de Jager, on Flickr
The next one is at f/2.8.
_DSC2242 by
Bill de Jager, on Flickr
California poppy flower (
Eschscholzia californica). Taken at f/4.
_DSC2270 by
Bill de Jager, on Flickr
California poppy flowers in the process of opening. Taken at f/2.8.
_DSC2318 by
Bill de Jager, on Flickr