I have a Kiron 28-105mm F3.2-4.5 Macro, Minolta mount lens, new in the box. Its been sitting in the closet the past 20 yrs. with my Minolta X-700. I recently resurrected the X-700, bought a couple rolls of film for it today. Couldn't remember why I purchased this lens. I'm mean to say, I probably could have easily purchased a Sigma, Tamron or even Minolta for that matter. Is there anyone out there familiar with this particular lens?