Hi! I'll try to contribute in areas that I know about, but joined to get help buying a long lense. I'm looking to get either the sony dt 55-200 4.5-5.6, sony 75-300 4.5-5.6 or tamron 70-300 4-5.6 (macro) telephoto zooms second hand. I don't shoot anything that really requires a long lense, but now that I've bought quality stuff at the shorter lengths I use frequently, I'm stuck with this lense mount for the foreseeable future, and feel like buying a used telephoto for occasional use. Does anyone have any words of wisdom? I know the old minolta lenses are highly regarded for build quality, but I'm only concerned with how the pictures look at the end of it all and am happy to use something plastic that weighs less. For sheer picture quality, am I likely to see a difference? Thanks in advance. Phil I've attached a photo I took in Hong Kong a couple of weeks ago to add some interest!