Was it ever determined what the relative performance is of these Vivitar lenses vs. their Pentax-M 28mm F2 or Pentax-M 28mm F2.8 (edited from 35mm, stupid me!) counterparts?
I just bought an M11 Kino/Kiron copy. I thought I was buying a K12 because the SN was long and the bestiary listed the M11 SN as No. 22xxx, which I took to mean it was shorter than the K12, but that turns out not to be the case.
I bought the lens for my 1.6x crop camera for use at a wedding. I looked like it needed cleanup, but that's easy enough and the price was right: $22.50 shipped.
I wish there was a standardized test of each of these lenses to find out which ones are the good ones! I guess the series-1 are probably the best.
Last edited by cwm9; 09-23-2009 at 10:17 PM.