Originally posted by forensicscientist I'm cleaning out the closet and thinking I might want to get rid of some older autofocus lenses. Any idea what the fair market value would be? I've looked on fleabay and only found the 35-80. I'm more curious of the 70-200. I know they aren't worth much but any idea??
Pentax-F SMC 35-80mm 4-5.6
Pentax-F 70-200mm 4-5.6
First go here
Pentax K-Mount Lenses and Lens Accessories and research your lenses to find out what they really are - match the photos to the lenses, if necessary. Look under Pentax Zoom Lenses without SMC Coating.
Then go here
Stan's Pentax Photography and read the comments of the PDML members (up to about 2004) to get an idea of the reputation of your lenses.
As has been suggested, you can search the ebay completed listings (the secret is constructing a search string that catches all of your lenses that have sold, but not much of anything else), or the KEH For Sale lists (much smaller, and the retail price, but it will give you an idea of condition discount).
If they're really not worth much (by your definition) consider giving them to a young photographer rather then throwing them away.