Hello everybody, I have had my 17mm for a few weeks now, and am very happy with it. I purchased the lens partially because of the pull back distance scale. I didn't really try it out until two days ago, and it has confused me quite a bit. The aperture value brackets (22,11,5.6,5.6,11,22) or whatever you call them near the front element seem to be placed awfully close together. According to this 17mm, to get everything from 5ft to infinity in focus, I would have to be at f22, which is ridiculous obviously. Does anybody have a good idea of how zone focusing works on the 17mm? It just doesn't seem to make sense to me.