Mamiya introduces the Sekor AF 55mm F2.8 LS D lens. The Sekor LS lens series is designed for use with the 645DF and it incorporates a lens shutter. A wide-angle lens with an angle of view of 65 degrees, which is the equivalent to a 34mm lens in the 35mm format, produces most natural image for a wide-angle lens. Mamiya also announces that the three separate digital back adapters to connect the M series digital back (M18, M22 or M31) to the RB67, RZ67Pro/ProII and 4×5 cameras have become available for sale…