Hi Stephen,
I just bought a (as new) Prinzgalaxy 3.5 135mm preset lens with T2 M42 adapter for 1(!)in a second hand (junk)shop. I am a little impressed about the (nice) pictures you made with this old lens. How good or bad is this lens in your experience, using on a digital camera with adapter?
I also bought for the same price (!) a Aus Jena Tessar 2.8 50mm, with stiff focus ring. I overhauld this lens for cleaning and lubricating, and now it works well. I like your macro and flower photographs with it. How usefull is this lens for digital use in general? Regards from the Netherlands,