Mamiya CS 50mm f/1.4 Lens: Oil on the Front Element
Originally posted on Instagram. Notes from the repair bench, kept here as a searchable archive. View the original on Instagram
This Mamiya CS 50mm f/1.4 lens had a bit of oil residue on the back of the front element as seen in photo two. Repair was straightforward, remove and clean the element. The lens is shown on a special fixture made for the NC series of lenses in order to adjust focus with the aid of an autocollimator. Note: it is not wise to squirt oil in a lens or camera to “fix” it.
