Dewman wrote:
Agreed about the #28xxxx prefix! I have four Series 1, 70-210mm Vivitars, two made by Komine, one by Cosina and one by Kiron. I also have several others of different focal lengths and not a bad one in the bunch. One of the sharpest lenses I own is a Kobori-made (#77xxxx) 80-200mm Vivitar. These amazing lenses can be had for a pittance on eBay. Recently, I bought a basically NIB 28-85mm macro Vivitar that is superb! So many lenses.... so little time!
Unfortunately we are surrounded by a cabal of "experts" that believe their gospel is sacred. I drive a Pentax K10d with a Tamron 28X105 almost permanently locked into it's body. The lens dates back to my first auto body Pentax and has done yeoman work through three K mount, Pentax boidies. Now deep into retirement and living on a managed(!)income I have no intention of shopping--either cuz I could nor would. This lens works for me.