I've been wondering if the very nice images I'm getting from this lens are unique, or possibly characteristic? I'll get some images up within the next day or so but, before I add this to my list of items up for grabs, I wanted to know if I was passing up a gem. I think I should keep it, though I'd be interested in knowing what others think. It is.. Vivitar 70-150mm 1:3.8 Close Focusing Auto Zoom No. 22826060 w/ 52mm Dia filter thread. I'm not aware of anything 'auto' about it despite that inclusion in it's naming. It seems like a fast manual zoom, and I love the fact I can get very close to subjects. It also works well with a Vivitar 2X - 22 TeleConverter I have. Likely better than any other lens I own which I find somewhat annoying since it's one of the least expensive lenses I own. I'd say wiht a some confidence I'm the first person to ever mount it to camera, I bought it used but, it was obviously not used before or not at all and, I know it's old. Maybe from the late 80's? The 'passed' sticker has '86' on it.. Thanks all.