Depth of field brackets on cameras are quite handy to start a discussion about picking the right aperture to get a desired depth of field and suggest the concept of the hyperfocal distance. I wish more lenses had them. I've got an old Vivitar Series One lens that has a quite pleasant set of depth of field brackets that work at any zoom length. Modern zoom lenses don't even try to get this right.

If I look at the advances in sensors and sensor processing that are coming out of the labs and sometimes even shipping in products, I realized something interesting. The game has changed at the research labs. See, previously, the goal was to make a sensor that had the highest resolution. Now, the goal is to still ship sensors with more megapixels but without changing the "real" resolution. And this may be a good thing.