This super wide angle lens was released in the same year the Nikon F was introduced. It firmly established Nikon as the market leader at the time, because no other Japanese manufacturers could offer anything as wide, in fact not even close! The rear of this lens protudes so much into the mirror box that there is not enough clearance for the mirror to swing up and down. As a result, the mirror has to be locked in the up position all the time whenever this lens is in use. This problem for ultra wide angle lens was later on solved by the introdution of retrofocus design which increases the back focus distance and reduces vignetting. A dedicated view finder mounted above the film rewind crank is supplied for viewing. The lens is renowned for its sharpness and minimal distortion, making it particularly suitable for architecture or interior shooting.
						There is a slot at the back of the dedicated rear cap where you can mount the view finder on it.