Manfrotto 420 Boom Stand brand_K&F Concept This lens is not for

This lens is not for the Canon FL mount

) EF mount telephoto lenses: compatibility is broader than Canon's own teleconverters

and the shutter speeds are good from 1/25s and up

but this is on the coating only: there's no effect on the glass itself

Diaphragm blades have a touch of oil

Manfrotto 420 Boom Stand brand_K&F Concept This lens is not forThe Manfrotto 420 is a combination light stand and boom very handy. As a light stand, it extends easily 12 feet in the air; as a boom, the pivot sits at just short of 6 feet, and the boom extends another 6 feet. Not as lightweight as a "single purpose" light stand, but the extra flexibility may come in very handy. A counterweight a sandbag or similar is required for boom use, and is not included here. In excellent condition.