Seeing some of Jack Flesher's and others' recent postings of images from wide angle lenses has wetted my apetite for something in the 50-75mm range, probably closer to 50. I often find myself trying to stretch my 90, without success. New lenses seem to start at $1200 plus, well beyond my budget. I'm looking for recommendations for lenses that I might find used and that are a good value for the money.

Also, is it likely that I will need to use a center filter on lenses this wide? Jack F., did you use one on the 58mm lens images you recently posted? Is multi-coating even more important on lenses that take in more light? What other questions do I need to ask or need to have answers for as I start my search? I have a little credit with Midwest Photo Exchange and I might ask Jim to keep an eye out for something but want to have an idea in advance of what I'm looking for. Thanks.