I like the versatility of my 70-200 and I use it as my overall long range/candid/sports/portrait lens.
Often times I find my pictures being a little blurry due to camera shake. 2 weeks ago I did my first photo shoot in which I had to keep the SS at 1/250 for flash, and some of the pictures weren't too sharp. I guess my hands are really wobbly.
I've had my mind set on the IS version, mainly due to its, well, IS, but also because its very sharp & flexible. The IS would definitely help with the SS being restricted to 1/250. But after looking at the Archives, I'm now entertaining the idea of a 85mm f1.8, since it can help me in low light, I won't need as fast a SS, and subject separation.
With the money it'll cost for me to upgrade to the f4 IS, would you recommend me buying the 85mm f1.8 instead?
I'm just afraid it's too close to my 60mm Macro, which I need for product photography. How much difference is the bokeh of the 60's f2.8 versus the 85's f1.8?
Is the 85mm used for product photography at all?

