Repair: Micro-Nikkor 55mm f/3.5 K/Ai

Hello, everybody! I was watching a documentary on the different types of passata, the tomato paste used in Italian cooking. They are fundamentally the same but there are numerous variations that makes each one special. I am not an expert in Italian cuisine but I do cook, which I am pretty good at and I can tell you that small differences go a long way. Small things such as the hardness of the water and where your salt came from matter at the end when it reaches your mouth. People who enjoy food will notice these subtle differences but those who just wanted to have a full stomach won’t. That is not a bad thing, it’s just differences in the way we perceive things. Today, I’ll show you a lens series which has small variations within its production but you can treat them all as the same lens.


The Micro-Nikkor 55mm f/3.5K/Ai is merely a cosmetic upgrade of the Micro-Nikkor-P.C 55mm f/3.5 Auto. An excellent lens by all standards, many people claim that this performs slightly better compared to its predecessor when it comes to resolving objects that are further into the frame. I cannot confirm this myself but all I can say is that better manufacturing capabilities can be the biggest factor to this claim. Going back to the exterior, the new-look was needed to make this lens look in-line with the rest of the catalog. This set the final look of this lens for years to come until the last one was assembled. It’s the last model of the venerable 55/3.5 class of Micro-Nikkors.

It feels solid in your hands, a real tool for professionals. If you took care of this lens it will outlive us all and it will still be relevant for decades to come. The tough build of this lens is something that we don’t see these days as we are constantly introduced to plastic lenses on a constant basis. The build is all-metal apart from the optics, a true classic.