Lens repair: How to service lens helicoids
ฝัง
- เผยแพร่เมื่อ 27 ส.ค. 2024
- Hello Friends,
Today I share with you a very important topic in lens repair, that is, how to work with lens helicoids. Helicoids are essential for lenses as they provide their focusing capabilities. Working with lens helicoids is fairly easy if you are methodic and mark everything as you proceed on their repair.
In fact, sometimes I buy very cheap lenses on the net that are sold as broken but many times it's just lenses that were disassembled and the owner didn't manage to build it back correctly.
keywords: Helicoid, focusing helicoid, helicoid, service lens helicoid, service helicoil, clean helicoid, helicoid repair, lens repair, lens service, clean lens helicoid, How to service a lens helicoid, how to clean helicoid, how to disassemble a lens, how to disassemble a lens helicoid, lens screw, screw lens, disassemble lens, reassemble lens, clean lens, nikon, canon, sony, olympus, contax
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mots clefs: helicoid focalisation, helicoid mise au point, entretien helicoid, démontage helicoid, réparation helicoid, mise au point hélicoidale
Thank You for your video! I have a Nikkor 35mm f/1.4 AIS that has a rough spot in the focusing ring. I'm going to lube it myself with the instructions you gave. Thanks again!!
Hello Larry, thanks for the comment. Don't forget the most important thing, be patient and mark everything. To begin disassembly the 35 1.4 if I remember correctly, you start by removing the set screw that is on the front barrel. Check my video on the 50 1.4 Ais as that part is similar. The rest I don't remember. Cheers.
This is how I imagined how it should be done, but consulting a professional for the actual technique is essential, thank you.
You're welcome. I still have to do a video showing more advanced helicoids. Cheers.
If my wife ever heard you speak, she would leave me immediately. 😂
😂. I can record a very suave message for your wife on your behalf.
@@diyextravaganza oh yeah I told her about your voice and she admitted absolutely leaving me for an Italian guy with curly hair.
@@thomasfx3190 hahaha, you're safe, I'm not Italian, but I do have curly hair.
Usando traductor o no ,se te ve trabajar ,muy claro y ordenado...gracias🖤
Gracias Mikel !
I have the same screwdriver set. High quality steel
Good tools increase your chances of success. Cheers
Working on lenses scares me I have to admit, one little error and the lens is ruined. The lens I am trying to repair is off a British Agilux Agima camera, I think I have got the adjustments right, now I am waiting for the helicoid grease to arrive, apply and reassemble, fingers crossed. Cheers.
Working with helicoids is a matter of patience, if you don't have it you're doomed. I'm planning a video to explain people how to choose their lens grease. What grease did you select? Cheers.
@@diyextravaganza I bought the cheapest HELIMAX-XP 10g size -40c to +149c made in USA £8.49 I have given both parts of the helicoid a thorough clean with nail varnish remover. when the grease arrives next week I will give them a final clean with lighter fluid. They run together very smoothly after the clean already. Cheers.
@@ianwilkinson4602 Thanks for the information, I really need to complete that video about grease selection. From what I quickly read, it seems to be a good grease but you don't get many technical details about it, which is a pity.
Will this procedure work with the Nikkor 135mm 1:2 ? I love this lens for photographing cats. The focus rings is so hard to move that the cat runs away before I get her in focus. The photographic repair shop in my city charges more than a doctor. Also can I use Mobill One Axle Rod grease on the helicoid? It works great on my motorcycle.
The procedure will work, however, each lens disassembles differently so you need to figure out how to disassemble it. Where are you located? Cheers
@@diyextravaganza I'm in San Diego, California, USA. I am determined to repair my own lenses:
Nikkor:
24mm f2 great condition
35mm f2 has some dust inside
35mm f1.4 great condition
50mm f1.8 great condition
85mm f2 has some dust inside
85mm f1.4 aperture ring not clicky enough
105mm f1.8 focus ring very very stiff
135mm f2 focus ring very very stiff
@@elminero49 good that you have the determination to fix them. Check this one I haven't posted yet th-cam.com/video/0ErY5L6IvlI/w-d-xo.html
@@elminero49 I have also a video for the 35mm f/2. I have both the 105 1.8 and the 135 f/2 that need some maintenance but no video yet.
So you use SKF but share the link for JHT #10. How do these two compare and which one is lighter? Did you have issues with SKF separating and leaking onto aperture blades ?
Hi, I did not pay attention to that to be honest. I've use the skf since I started repairing lenses and never had a single problem with it.
@@diyextravaganza hmm yeah the upper temp is kinda low i am worried if it can evaporate, create the haze on the glass etc. i live in Miami and that could be the issue. Thanks for your reply 👍🏼
@@ivanzivojinovic1606 I haven't check the max temperature but it's about 80C as I remember, which is kind of okay unless you leave the lens inside the car during summer. Cheers.
Do you have any information on removing Helicoid on Mamiya 645 Sekor C 80mm 1.9? I have a stiff focus ring on my Mamiya lens but can't find any information on it.
Hi, I don't. I have never worked on that lens. Cheers.
Hello friend !
Tu vas la faire en espanol ou en francais ? Je ne suis pas vraiment à l'aise en anglais et je t'avoue que la traduction automatique, avec ton accent mi-latino et mi-français, le système à du mal à traduire 😁
(je te charie 😉)
hahahaha, c'est possible, le système ne peut pas gérer autant de "sabor". Je la ferai en Français quand j'aurai un deuxième objo de disponible. Salutations.
Is there not also a very fine thread, which is the other half of the helicoid? This needs all the old hard grease removed also.
I took this lens as example since it has a very simple helicoid mechanism, but you're right, some lenses have also a very fine thread on the focusing mechanism. The old grease need also to be removed there, I have a 50mm 1.4 Ais on my desk waiting for service and it has such mechanism, keep tuned to the channel for that.
@@diyextravaganza Look forward to it. I saw a good tip on another tube vid, before removing the helicoids, wind the lens in & make a witness mark. On reassembly, winding in, the witness marks should line up, proving helicoid is in the correct thread.
@@wibbley1 good advice. Thanks.
can i use automotive grease?
Hello, what NGLI grade, is it lithium based?