A. Schacht Ulm Travenar R 135mm f/3.5 (3)
A. Schacht Ulm Travenar R 135mm f/3.5 (3) is a manual focus prime lens for full frame cameras.
Average brightness in this league Has 6 aperture blades, this number of blades are commonly used. Having rounded blades provides out of focus circle shape closer to a circle.
49 mm lens filter diameter, you are one step from the next standard filter size, buy step-up ring and bigger filter but you can chose from plenty options.