According to adaptall-2.org, this particular model was Tamron’s best selling lens throughout the early to mid 1980s due to its performance, price, and ergonomics. Because of its popularity, the lens is relatively cheap. I bought mine in mint condition (including the original box and a snazzy lens case) from a local auction website for a paltry sum of $35 as a replacement for my Tamron 70-150mm f/3.8 Adaptall lens.
There are two things I particularly like about this lens: the unique design and the lens’ distinct look. With its colorful markings, the lens completes my trusty Nikon F-501 from the same era. I had a chance to shoot a single film roll with the lens, and here are a couple of photos for your viewing pleasure. All the photos were taken with Nikon F-501 and Ilford XP2 Super 400.
This confused seagull chick climbed on top of the car and stood there, trying to figure out what to do next.
While the 103A model is technically not a macro lens, it’s capable of producing decent close-ups. This logo plate on a Triumph motorcycle was taken from approx. 1.5m distance at 210mm focal length.
One more example of the lens’ close-up capabilities. Lilium superbum from the Aarhus University botanical garden.