Mamiya Sekor Z 180mm f/4.5 W-N

The Sekor Z 180mm f/4.5 W-N is a refined telephoto prime lens for the Mamiya RZ67 system. The 'W-N' version is the final iteration of this focal length, featuring updated coatings and mechanical improvements over the earlier Sekor Z version. With a 35mm equivalent focal length of roughly 87mm, it is considered one of the definitive portrait lenses for the RZ67 system. Check the electronic leaf shutter for consistent timing, particularly at the slower speeds. The glass should be inspected for 'balsam separation' or haze, which can occasionally affect these large medium format elements. SDS examines the gold-plated contacts on the rear mount for cleanliness and tests the aperture ring for positive detents and smooth operation across the range.