Originally posted by gofour3 I agree with “Asahiflex” about the K28/2’s close-focus performance, it’s second to none. (I have most of the K series primes and it blows them all away, the only one that comes close is the K50/1.2) The close-up performance has nothing to do with using the lens wide open or the bokeh it produces. If you hit its sweet spot you get 3D effects which are amazing. Like the K50/1.2 you need to play around to find it’s strengths, just a straight-on sharpness test is not enough.
Against other Pentax primes(yes), that works.
Against the Vivitar 28/2.8, CF, then the results stand.
The Vivitar runs circles around the K 28/2, in close focus performance, size, sharpness, color and OOF rendering.
Did I miss anything
I guess what stands out in this(for me) is the size and price differences between the two products.
BTW. I payed 250'ish for my K28/2 about a year ago, and a 160 for the Vivitar. But the K2 was in pretty bad shape and so I think a better copy would be more in the range of 400'ish. With that in mind, I guess the only defense for owning one would be to complete a collection or something along those lines.