Tamron SP 17mm f/3.5 (51B)
This lens was introduced 1979 as one of the first Adaptall 2 lenses. Today 17mm might not seem very exciting, but in 1979 it was quite an exotic focal length. Few third-party lens companies had a lens quite this wide in their line up. This lens does not have a filter thread, but it came with a lens hood that took 82mm (these hoods usually got lost and are now very hard to find!) and also has a selection of 3 built in filters. The adaptall-2.com website lists these as: 81B (a warm up filter for colour photography), 80B (a blue cool down filter, again for colour photography) and Y2 (a yellow filter for adding a little contrast in b&w photography). But my copy replaces the 80B filter with an R80 filter (a red filter for adding dramatic contrast in B&W photography). In other words there were two versions: one aimed more at colour photographers and a second aimed more at B&W photographers.
Photographs taken with the Tamron SP 17mm f/3.5
This lens has a repuation for being somewhat middle of the road when it comes to image quality, which for most people (including me!) is good enough. All these photographs were taken using a Pentax ME Super on Kocak Portra 160 film.
Just in case you're wondering, I've no idea who the shirless man is in the last of these photos! He just wondered into my shot and I thought he looked quite... err... statuesque (!) so I left him in.
Tamron SP 17mm f/3.5 (51B) on the adaptall-2.com website