SMC Pentax 135mm f3.5 brand_Visibledust so we're talking about a

so we're talking about a camera that's at least a hundred years old at this point

and it can be either remounted on a board for your camera or used as an ersatz retaining ring on a plain drilled board (not included)

A nice ruggedized point and shoot that won't konk out if it gets rained on

So you will probably not want to use this lens if speed of operation and sheer optical quality are your #1 concern… but it’s still kind of neat

SMC Pentax 135mm f3.5 brand_Visibledust so we're talking about aThe SMC Pentax 135mm f3. 5 lens is a short telephoto lens for Pentax K mount SLR cameras. In very good condition, with light cosmetic paint wear, minor internal dust, good function. This first series of Pentax K mount lenses is larger and more heavily built than the later Pentax M lenses.