![Nikon PB-6: Repair of the diaphragm closing mechanism](/media/images/article/thumbnail/622bce61f3190.jpg)
Nikon PB-6 macro bellows bayonet mechanism repair
Nikon PB-6 macro bellows bayonet mechanism repair
We show you how to remove fungus and dusts into the Nikkor 300mm f/4.5 Ai ED IF.
In this article we will clean this lens with an excellent value for money and remove the fungus being inside of it