>Zooms can change focal length either by accident or creep.
Yes it can. That's why, for me at least, I either tape it down or use a wide rubber band. I have a push-pull type.
> >BTW, you can spend a lot of time doing HDR panos. I'm not a >people person so I generally carry headphones, the noise >canceling type. Isolation and a smile works.
That's pretty funny, Harry. I actually do the same, but people inevitably force me to take it off so I can talk with them. In the end it isn't all that bad. They're just curious. One of the weirdest situations I encountered, though, was when I was in San Francisco's Chinatown and was taking a Gigapan. I was just looking at the unit do its thing when I looked to my left to see this guy standing REALLY close to me. His head was closer to my head than I felt comfortable with. I was pretty shocked that I immediately pulled away. He never said anything but I knew he was just wondering what the heck I was doing.