OK, here we go! The first pics will be deliberately obscure, but it will get clearer soon - verbal hints will also be interspersed.
Remember the most important rule: Only two guesses per pic, and they may not be consecutive - someone else must guess inbetween.
(I'll make a rule for myself as a poster, too: at least 2 hints a day, either as pics or verbal.)
This first one should be practically impossible - but it's for all you DOF fans (even though the bokeh looks rather ugly, here...):