Traditionally you bought your comera body with a so-called Standard 50mm lens adding in time a wide angle lens of 28 or 35mm focal length and then a moderate telephoto which in the era I started to put my kit together was a 135mm moderate telephoto.
Your aim was to cover most of the types of photographic needs bearing in mind some of restrictions of zoom lenses such as absolute quality and light gathering abilities typically spacing by about 1.4 times the gaps in the focal lengths of your lenses.
The one I bought was the Tamron type 52B from the early 1980's which actually is a dedicated Macro lens that focuses close enough to give you half life sized (1:2) reproductions of your subject on film that by using a dedicated two times convertor takes to life sized.
It has all metal construction unlike the later type 52BB which is optically the same but uses more plastic.
If you look at the above picture you can see apart from the distance and depth of field scales, the actual reproduction scale is marked on the lens barrel.
Because the front element is very much exposed, to avoid the contrast reductions of flare from strong sunlight, I also got a lens hood for it that screws into the filter thread.
The image quality wide open is really good and the time one comes in a few F stops which for close up you're bound to, it is excellent with a crisp easy to focus image thanks to the f2.5 maximum aperture that you see when taking the picture.
As with all Tamron Adaptall 2 lenses, you attach a mount to it so it fully couples to your camera just like the manufactures own in my case, Minolta MD for shutter priority and Program auto exposure on the XD7 and X700 camera bodies respectively.
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