On Monday, August 22, 2005, at 11:36 PM, Pat White wrote:
As for the AF feature, it sounds useful and very unusual. I've never heard of any lens with a complete built-in autofocus system that works with almost any manual camera it can be mounted on. Has anyone heard of another lens with a similar set-up?
In the early days of autofocus Vivitar sold a couple of these lenses in the USA. One was a 28-70 and the other a 70-210. They were made by Cosina. Cosina actually holds some important autofocus patents. My dad was a Pentax user, and for his birthday one time I got him one of the 28-70 lenses in K mount. He used it for years and got great results.
Tamron also made a zoom with built-in AF. I think theirs was a 70-200 or thereabouts.
Pentax had one of these lenses as well, but as I recall it could only be used with one special camera body.
I seem to recall Nikon having something like this as well. Bob
