I worked with the Tokina 11-16mm today in the meadow on the butterflies. I was looking for a wide angle approach. These super wides have a deep depth of field; add that to the fact that they include everything in the picture, and it becomes difficult to isolate a single subject that does not fill the frame. I set the aperture at the maximum f/2.8 in order to minimize depth of field to isolate the subject better. However, I wanted enough of the background that one could tell what the setting actually is. Here we have a stand of teasel in a tree-bordered field on a partly-cloudy day. There’s enough to tell those other things are there, but the eye still rests on the butterfly and its flower. The butterfly is a Tiger Swallowtail.