This particular lens is made from these parts:
- A lens elements from an unknown lens -- Don't remember which lens it come from
- Part of a lens barrel with focusing helicoid from a T-mount telephoto lens
- T-Mount for M42
- 3 different digital camera adapter tubes
- Electrical Tape
What I found is that this one actually has better colour. In fact, the colours are very intense. It could be because the lens element is coated, which increases colour fidelity. In any case, it was fun making it, and even more fun to use it.