hi
what's the best choice for a portrait lens ?manual focus 120f/4macro or auto focus 140f/2.8; the difference in price between the two on ebay is quite large up to two thousand in favor of the 140
cheers
You can use either lens, both are great but I favor the 120mm for most of my work.
As far as pricing goes, ebay is all over the place, market value for a mint 120mm is about $1600-$1700 and less if its not mint, the 140mm is usually under a $1000 these days. Check out Keh.com, you'll get a better idea of prices there.