It's said with primes that you zoom with your feet. That can be problemating when rock climbing. I was too lazy to carry my 18-200mm VR. Pretty darned lazy. Greetings from Joshua Tree NP My friend sees me teetering over the edge. "Hold on, I have to back up to get that climber in the background!" Mike practices setting anchors. We used up the day's remaining light to go on a short hike afterwards. Nothing special, but it was fun to not be able to zoom, nor zoom with my feet, to work with what I got.