PentaxForums.com Marketplace Listing Item for Sale
Vivitar Series 1 28-105mm f2.8-3.8 Zoom, KA mount, Manual Focus
Asking Price
$45 US
Shipping Destinations
Worldwide
Item Description
I had this listing up in August but had family issues that kept me from answering any PMs about it. Here it is again at a slightly reduced price. I wish there were still leaves on the trees.
I read somewhere that this was a pretty good lens. I bought it on eBay when I was looking for a midrange zoom, but after getting three midrange zooms I have chosen the FA 28-105. It's made by Cosina, manual focus, one touch zoom/focus, with the A position on the aperture ring. It had a Ricoh pin, which I removed and taped to the lens cap. If you want I'll reinstall it. It has a 67mm filter size, 630g, KA mount. Glass is clear, fungus-free, and unscratched. Aperture is snappy and oil-free. The A position works properly. Focus and zooming action are smooth. Included caps are generic.
I've only used it a couple of times so I don't know much about IQ. Colors are definitely not Pentax. Here are two shots, the left with the Vivitar, the right with a Pentax FA 28-105mm f4-5.6. Both lenses are set at 28mm; the Vivitar is a bit wider. The shots are taken with auto white balance. With a custom white balance, the photos look much closer, close enough for me. In JPG, using a tool to remove color cast works too.

Close focus works at the 28mm end. The lens is marked with a minimum distance of 0.6 feet, which is about an inch from the front element. I don't know its magnification specs. I took this photo of a quarter, almost as close as I could get. Maybe 1:4? Not spectacular but definitely useful:
Some more photos of the lens:
Are you the original owner of the item being sold?
Yes
Are you selling or trading this item?
Selling
Item Condition (Key)
Used
Good
Item Location
Aurora CO USA
Shipping Charge
$9 CONUS, free AK or HI, ask int'l
Shipping Services
USPS
Accepted Payment Types
PayPal
Return Policy & Additional Details
Due to the weight, international shipping is going to be pretty high even with First Class Mail International.
Please send me a
private message if interested in the item!