58 รูปภาพ
Item Name : Gundlach-Manhattan Optical Co. 50mm f1.9 Ultrastigmat Ser.1 Leica M mount
Serial no. : A6063
Reference : Extremely Rare !!,Charles C. Minor, an optical expert in Chicago, USA, proposed a trick: add a convex crescent lens in front of the Triplet to form four elements and four groups (4G/4E, or 1-1-1-1). Minor was patented in 1916 and the Gundlach company produced Ultrastigmat f/1.9 lenses for cinema cameras at focal lengths of 40mm, 50mm and 75mm
Glass Description : Leica M RF coupling,very few very very faint cleaning marks, very very faint haze
Remark :
Cosmetic Condition : EX+++
Price : $4500
