My DSLR lens arsenal is now strengthened with the new super-tele zoom Sigma 150-500mm f5-6.3 APO DG OS. This will be very useful for my travel and nature pics. When I bought it, the shopkeeper was surprised how light it was. It is well made and is quite handholdable, balancing nicely on my Nikon D700. With its built-in optical stabiliser, shooting at max zoom is not a problem, with the image becoming almost rock-steady in the viewfinder after a second or so once it kicks-in. So far, my initial tests showed that the lens performed well, focusing accurately and quickly, with sharp images that are rich in contrast and natural in colour. I liked that the zoom ring is a little stiff - this makes it stay in place and not creep. A further zoom lock switch makes for safe lugging around. As a bonus, it fits in snugly unmounted into my Crumpler 7MDH with the rest of my photo equipment! It costs me an affordable RM 3,840 and is certainly an eye-turner...
Take a look at my Sigma monster....