I picked up an Industar 26 52mm f2.8 in M42 mount with an EOS adapter to try on my 40D. The lens will only focus at a range of approx 6 - 8 inches. I have never experienced a "broken" lens before, so I'm trying to figure out what I have here. Any ideas? It is totally out of focus beyond 8 inches or so, and not at all adjustable at that point. Any reason to think it would be different on my E-PL1? Thanks.