RB67 65mm Lens: Checking for Oil on the Shutter Blades
Originally posted on Instagram. Notes from the repair bench, kept here as a searchable archive. View the original on Instagram
Mamiya RB67 65mm Lens. This lens arrived for service and the first thing I do when checking leaf shutter lenses such as the RB series, is examine the shutter blades for oil contamination. If there is oil on blades, that will indicate a need for a complete shutter disassembly as there is no shortcut to cleaning the shutter or diaphragm blades. These two photos clearly show what oil on the blades looks like.
