Carl Zeiss Jena Tessar 40mm f/4.5
Carl Zeiss Jena Tessar 40mm f/4.5 is a manual focus prime lens for full frame cameras.
Has 10 aperture blades, this lens has a beautiful bokeh. Average brightness in this league
Weights 124 grams so convinient to carry. 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. 48 mm long, this small lens should alway be in the camera bag.