Thank you all for your replies. I am reading them and doing extra research with great interest, but don't have a lot to respond with so have been fairly quiet.
I'm in need of more understanding on the effects of Bellows (in particular changing the angle of the front lens on the belows), and the comparison of extention (via tubes or bellows) to a dedicated lens such as the Sigma 150.
I am becoming somewhat hesitant of bellows because of their physical size and awkwardness (from what I see) with regard to use and packing in a camera backpack.
I'm going to do more research on this, see if I can better understand the use of dedicated macro lenses. If anyone has more info feel free to post it and I will continue to read it with great interested.
Thanks!
