Comes with a cap.
I tested this Jupiter-9 with a Nikon DSLR camera and it worked as should.
49mm filter.
15 aperture blades.
Aperture range 2-22
Usual shipping time to EU -12-21 days, USA - 14-30 days, other world - 21-45 days. In very rare cases it may be longer due to customs issues or holiday delays.