Designed and hand assembled by Japanese optical master Miyazaki Sadayasu.. This is the smallest wide angle lens that actually focuses with an adjustable iris The lens is about the same size as an average lens cap... The triplet design reminds me of a Zeiss Triotar or Cooke lens.. It has its own unique look and is made for personal artistic expression. Not your run of the mill lens and not easily available.Optically the lens is crystal clear without any issues... Focus and aperture is silky smooth. Cosmetically the lens is in beautiful shape and looks new. I used it on my Leica SL2-S with a Leica M mount adapter with beautiful results. In the right hands this lens is capable of capturing some unique images. Included is the original little box and Japanese hand written illustrations by Miyazaki. The Leica camera in the pictures is for illustration only and not part of the sale. The item "LEICA M MOUNT 21mm. F/4.5 MS-Optics PERAR SUPER WIDE TRIPLET Miyazaki US Seller" is in sale since Sunday, May 16, 2021. This item is in the category "Cameras & Photo\Lenses & Filters\Lenses". The seller is "eyemodeo" and is located in Princeton, New Jersey. This item can be shipped to United States, all countries in Europe, Canada, Australia, Japan, China, South Korea, Indonesia, Taiwan, South africa, Thailand, Hong Kong, Bahamas, Israel, Mexico, New Zealand, Singapore, Saudi arabia, United arab emirates, Qatar, Kuwait, Bahrain, Malaysia, Chile, Colombia, Costa rica, Panama, Trinidad and tobago, Guatemala, Honduras, Jamaica, Barbados, Bangladesh, Bermuda, Brunei darussalam, Bolivia, Egypt, French guiana, Guadeloupe, Jordan, Cambodia, Cayman islands, Sri lanka, Macao, Martinique, Maldives, Nicaragua, Oman, Pakistan, Paraguay, Reunion, Uruguay.