Linda From Maine wrote:
There is also a very handy "seek assist" button. Located by where you grip with your left hand, so you just rest your left index finger on it. If you move or your subject moves, you depress the button and the zoom pulls back to wide angle. While keeping the button pressed, you re-acquire the subject, and when you release the button, the zoom zips back to whatever focal length you were. Much quicker and easier than constantly zooming in and out with the lever.
Thanks Linda. I wasn't aware of that. :-)