Most of my tests so far were wide angles, portrait lenses and some standards. Now I decided to take some shots with my biggest piece: 3M-6A (ZM-6A) 500 mm 1:6.3 M42 lens. It's absolutely stunning and huge mirror lens.
3M-6A (ZM-6A) 500 mm 1:6.3 (M42) - mirror lens (Maksutov) - built-in lens hood. You have to pull it to access focusing ring - I find that a great solution!