>>4258231The specular highlights are cool, but mirror lenses are so light that they overwork the camera's stabilization system and are harder to hold steady than a heftier lens, especially as you see here, on a sony. The film shits turning out somewhat was a miracle at shutter speeds under 1/500.
Add in the fixed aperture so you can't opt for a higher SS or more DOF, and I wouldn't buy one again over a regular soft cheap zoom lens.