I've set up some models that should behave like plexiglass. I've looked at philip's whiskey bottle tutorial (the one he has on his own site), to get a feel for rendering almost transparent objects.
I've also used the HDR pic philip used to get some background.
I've rendered it with caustics @ 50%, AA to medium, raytracing (shadows, reflections, transparency and refraction) w/ a recursion limit of 4 and using standard DoF, but there are some issues (see the picture I've attached):
1) The DoF doesn't apply properly. It's set to focus at an upright pane of plexiglass, but it unfortunately renders what you see thru the plexiglass as in-focus as well, even though it shouldn't be
2) Glaring from some of the objets isn't anti-aliased, and that's really annoying. It seems to happen when I use an Image World, since I've just saw it in another rendering of another model of mine.
Am I missing something? What can I do?
(the picture is way to lighted right now, but the issues are the same.. and ignore the bodged-together foot for the upright plexi-pane

)