Visited a History Museum a coupla days ago and found it a useful experience in learning about AF.
When i entered the museum, i asked about photography. the answer was: Yes, except where marked. Also don't use flash. Also no packs allowed, leave your equipment here in the (lockable) lockers provided.
Until i got better acquainted with what they had, i selected my DA 35 f2.8 lens with my K10 and set off.
I encountered a lot of amber highlighted displays of various artifacts and human displays such as the following:
That was a realistic light level for this display. I did a AF image of the face and found it fuzzy when i checked the LCD. Shutter 1/30sec, ISO 400, f2.8, SR: ON. I remember reading about AF focusing problems with yellow light, so did a Manual Focus on the face and the above image resulted with the face in focus.
The other problem i encountered was with these spotlights that the museum loved to use with these almost life size sculptures. The spotlights produced these hotspots which required reducing the aperture size a few stops.
Anyway, i highly recommend this museum experience to test out one's focusing and perspective skills.
Phil