I just bought a Panasonic G5, and am totally new to 4/3, and adapted lenses, as far as that goes. I was looking at a Pentax smc? K 300mm f4 lens, and for the most part it gets good reviews on the Pentax forum. It is an older FF lens made in the 70's. It does not have a tripod collar. My question is, would it make a decent lens to adapt for wildlife pictures, as it would have to be hand held, unless there is a tripod collar that can be used. What adapter would be a good match for this lens? Any other issues that I should be aware of? All opinions welcome.