Repair: Fungus Cleaning

Hello, everybody! I was a bit busy with a wedding yesterday (photographer#2) so I did not have the time to prepare for a full lens teardown post so I decide to write something else instead this time. It also dawned to me that in order to keep this blog alive, I should not post a lens teardown every week because I will quickly run out of lenses to write about! A balance has to be struck so I will write filler posts like these in between the teardown posts so I hope that you don’t mind.

I will promise that I will make these filler posts as educational as possible and with the same standards as my teardown posts so that you, my readers will not get bored reading my blog. Nikon has made a lot of lenses but I can only afford a few to feature on the blog.

I have some people ask me about how to remove fungus from a lens. This is also a niche topic that is not commonly discussed and even if you found one on the internet or other media, the information that is being presented is usually sparse and scattered all over the net so you will have to hunt for them and decide which one works and which one doesn’t. For this reason, I will share to you my fungus removal routine. This is something that I have been doing to any lens that I bought that has fungus in it. It has worked so far and the lenses stay clean and clear. Let’s start!


If you are easily offended at the sight of a dirty lens then this blog post is not for you! Do not say that I didn’t warn you because you will see some disturbing images in this post and if you are a true Nikkor lover then look away. It can hurt, I know.


Fungus in a lens is something that all photographers try to avoid as much as possible. This is something that is impossible to avoid because the tiny fungal spores responsible for this is everywhere, from the air we breath to every surface that we touch. The only measure to prevent this from ever happening is not to provide the spores any chance to germinate at all by depriving them of nutrients and other variable essential for them to thrive. More


Repair: Nikon 75-150mm f/3.5 Series E

Hello, everybody! Such a lovely weekend we have now at Tokyo, unfortunately for me I ate a lot of cheese tarts and we all know that cheese is not a friend for the lactose intolerant. I am also happy that my child is approaching her 1st birthday soon. Time flies so fast, it is as if it was just a few months since she was born and now here she is, bouncing around like a hyper bunny! This post took me several nights to make because I want to make this easy to read so I hope that you enjoy this!


This lens does not need a lot of introduction. The E 75-150mm f/3.5 is considered by many to be a hidden gem of a lens despite being a Series E lens, a line of lenses made by Nikon to complement the entry level class Nikon EM camera. The Series E lenses are made with cost as the main factor while maintaining superb optical design and performance. Many lenses under the Series E label are superb performers and they have acquired such a following in the used lenses market that they sometimes cost more than lenses on the Nikkor series!

IMG_2552(I got this one for very little money for the purpose of writing this. If I can afford the lens, I will get it to accommodate your request. This one is still in pretty good shape.)

Just like any popular and tested lens, this lens is also not exempt from known issues with the zoom creep problem being the most well known. This issue of the zoom creeping (the lens changes length on it’s own due to gravity) seem to plague a lot of photographers who own this lens (mine has a little bit of it). Another issue is that the focusing ring seems to be too light or not damped at all (lubricant choice). More

Repair: GN Auto-Nikkor 45mm f/2.8

Hello, my dear readers! Despite the busy schedule I managed to pace my time in order to post this to my blog on a timely manner. Apart from being busy at work, I was sick with hay fever. Hay fever is a thing here in Japan every spring and it affects a significant part of the populace. Keep your masks on to prevent hay fever from ruining your Spring.

As I promised a few posts before, I would like to present to you some unusual Nikkors as we have dealt with conventional ones in the previous posts. This approach is to nurture your growth and you start with simpler lenses and then proceed to the more exotic ones. The subject of our post this time is a mysterious and unique Nikkor that many peope do not know much about.


This lens is a mystery to many people because it is the only Nikkor of its type that got into production. This lens was designed to aid photographers who use flash guns. Back in the days before TTL metering, photographers need to adjust flash output by re-calculating its power as you go nearer or further from the subject (hence GN for guide number). Nikon’s engineers had to find clever ways to solve this like the GN Auto-Nikkor 45mm f/2.8 and its unusual coupling mechanism. Another good example is the early production type Micro-Nikkor-P 55mm f/3.5 where its iris open up as you go closer to its maximum reproduction ratio of 1:2 n(ative) or 1:1 with the included M ring accessory.

This lens has a switch at the focusing ring to couple it to the aperture ring so that these 2 move in sync as you turn the focusing ring. For example as you focus your lens closer the iris would stop down and when you focus further the iris would open up to compensate. This allows you to shoot without even thinking about changing the power of your flash. While this is good and clever it has a catch, the focusing ring on Nikkors go the other way and this means turning the focus ring to the right makes the lens focus to infinity and in order to make this clever iris compensation trick work, this Nikkor had to focus towards the opposite way! This is very annoying for me so I don’t use this lens as often as I would like to. It’s such a pity because I have grown to love this lens.

IMG_1774This lens is an example of precision engineering. Look at these nicely engraved numbers, this is something that you don’t regularly see in current lenses from mainstream brands. If you think this is all the engravings this lens has then just wait until you read the whole article. This is one of Nikon’s most ornate lenses and it’s one-of-a-kind. More

Repair: Nikkor-Q 200mm f/4 Auto

Hello, everybody. I’m sorry for posting this late but I was having a problem with the blog so I was not able to post this earlier. For some reason. I can’t access my drafts and my site would not load at all. That was all fixed after I restarted my laptop. I was scared because I have spent a lot of time documenting/writing for this blog and if I lost all of my posts it would mean the end of everything. Now that it is all in the past we can now proceed with our subject for today.


Our subject for today is the amazing Nikkor-Q 200mm f/4 Auto. It’s one of Nikon’s most expensive lenses in its day and it’s the successor to the Nikkor-Q 20cm f/4 Auto which is a revolutionary lens in its own rite. This lens is an improved version and it fixed some of the bigger problems of the older lens so it’s considered to be a different lens in nearly all aspects. Apart from the obvious difference in lens barrel design it also has an improved optical design (slight variation) that makes it a better-handling lens overall. I like how the new focusing ring feels because it’s now broader. It also focuses a bit closer which makes it more useful but is still too-long compared to later lenses from this class. It’s a great lens for its time and many people bought these for taking pictures of sports, news, birds and just about anything that needs a long lens.

IMG_2361.JPGThe silhouette of this lens reminds me of a softdrink bottle. It looks sexy and people will surely stare at you when you use this lens. As you can see from the photo, this lens is not what I would call small. It’s heavy, long and big so carrying it all-day can be a problem if you wear your setup around your neck. I wish it came with a tripod mount because it is front-heavy but I guess this lens was designed to be used hand-held so it was omitted.