Nikon AF-S Nikkor 300mm f/4D IF-ED - fungus cleaning

[mfilippa]

Thank you Richard,
yes I do read your articles, that are useful, and also an enjoyable reading!
At the end it came off with alcohol, I put it from behind with the lens standing, the front end downwards; so the third group was rather close and into a confined space, and it is a cemented doublet, so I avoided more powerful solvents.
Yesterday I managed to unscrew also the 4th and last group, with another tool (as you say, made from scrap )
So now I can go forward and clean the elements...

[mfilippa]

OK, I did it
The fungus is gone with ammonia + peroxide, no trace left on the coatings
I reassembled the lens and shot some photos, it works!
I have not been good enough to clean completely every element, shining a light through the lens many particles are visible. I'll practice in some manner then I'll clean it better.
For the moment I enjoy this revived great lens!
I'll ask help again for a couple of minor issues, but for today... She is our family's Golden Retriever with the AF-S 300. 1/1000 sec, f/4, hand-held.

[Nasos Kosmas]

It’s a very nice lens, congrats you succeeded !