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Once the lens elements are separated, why do you need to glue it back? Can't you leave it unglued? Telescope objective lens elements are not glued and they work fine. I like to not glue my lens elements as that makes any future cleaning so much easier.

Solo por curiosidad , que pasa si no pegas lo elementos con el balsamo?

Love your videos, deffo got notification bell turned on. What would be awesome if you could do before and after repair picture samples. Like before you clean fog, fungus and after.

Bonjour vous réparez des objectif?

Many thanks for the videos informative and even innovative. I have a fungus in the cemented pair of my Mamiya G 75mm. Do you have any experience with that type of lenses? Do you think it would be fixable?

Excellent tutorial. The vid quality is great 👍

Hey can you show us how to calibrate to infinity. I followed your directions but it seems off. Can you walk us through that?

Thank your showing a full service video. Your previous one only covered some parts of the tear down and I went blind and winging the teardown, it was hard. I didn't have tweezers so the aperture spring wasn't inserted as well. With this video, I won't go blind anymore. Thank you again!

Merci très bien montrè et expliqué - Bravo pour votre topic.👍👍👍👍👍👍👍👍

Gracias

Un lente increíble!!! Me gustaría tener ese modelo, gran informe 👍🤙👏🇦🇷

Nice informative video😊

merci pour cette magnifique vidéo pleine de PRECIEUX conseils . je vais me lancer . merci encore .

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Excelente video! Tengo dudas, ¿qué otro nombre tienen las chupitas y esos conos de goma?

un lujo, que gran trabajo de comparativa!

Que gran video gracias por tomarte el tiempo de subir este tipo de videos , nuevo suscriptor . Por cierto cuando los tornillos tienen esa especie de pagamento que no permite retirarlos cual es la solución? ya barri un par de tornillos de un fish eye nikon por ese pegamento

I have one of the screws which is stripped and the lens doesn't focus to infinity at the long end. Do I need to open that end of the lens? Somebody has a procedure to fix the focus issue?

Bonjour. Merci beaucoup pour ce tuto. Mon objectif est impeccable maintenant !!! Bonne année à toi !

Hello, i have a D700 Mirror stuck up problem - the mirror is up, suddenly, hence therefore, the OVF is black, because of that issue, and the mirror is not coming back down. Mirror lockup feature was never being used. Is it Toast?

N'oubliez pas la version K avec mise au point avancée à 0.45m, révision de la formule en conséquence mais tjrs 6/4 et le bonus d'un anti reflet encore plus récent, tout en restant pré AI. Articles sur le net, tapez nikkor H 85mm 1.8 review et scroller pour arriver au site de Richardhaw pour en apprendre des tonnes sur ttes les versions, même les suivantes Ai et Ais.

Any other way to remove the optical assembly without the tool?

Hi I forgot to make the marking, how can I make it right

Hello, thank you for sharing this fantastic video! I was wondering, would a 1.3mm glass be a better option compared to 1.5mm? Also, could you provide the exact dimensions of the glass for a D800? That would be incredibly helpful. Thanks so much again!

Bonjour Diy extravaganza, Cette vidéo est super intéressante mais dans mon cas il faut que je démonte la grosse lentille et j'avoue que je suis un peu embêté J'aurais bien voulu que tu la démonte Mais c'est trop tard ! en tout cas merci à toi pour toutes les vidéos que tu partages En français et en plus :)

It's super easy to drill off the screw heads. Only takes a few seconds per screw. Then you can just replace them.

Hi do you know where i can buy the clear glass cut?

Hi! Is it loud under full load? And CPU TDP do you have? I want dual xeon 8180 in this system, but 205W TDP is something that concerns me. Thanks!

thanks so much for this - I own a Ektar 7.5 inch ƒ4.5 lens and I am fascinated by the work that was put into making this....

Such a professionnal & intructive work DE. Despite I'd say color rendition seems richer with the 1.4 model, even @ 8.0 I'm not sure I'd be that worried to start a set for filming purposes with the 2.0 model that said... maybe the 105 2.5 is even a better deal.

En estos días las cámaras son muchísimo más pequeña... Que locura 😃 esa cámara era un tanque de guerra 😂😂😂, muy entretenido 👏👍🤙🇦🇷

Interesting that all the various lens parts and components are called "here". And too much hand touching of parts. You need to practice how to manipulate the parts with tweezers, to avoid putting oils from your hand on the parts, before reassembly. Do not use toilet paper for anything, as it has the potential to leave behind lint. There are so many microfiber cloths you can use. Lastly, you need to re-lubricate the parts you cleaned, or the helicoids will wear out as you use the lens, because aluminum (aluminium) is a very soft metal that will wear fast, if not lubricated correctly. Overall, it was a useful video.

Great video but my front element will not come out at all !!.. I have undone the screw and the element seems like it is completely stuck and will not move.

Thank you for sharing as always , I tried to clean this 70-210mm lens , but it was not successful due to degraded coating due to fungus within the sealed elements , it's common with this type of Nikon lens ,the lens is much clearer ,but the fungus has created an unremovable patch on the optical coating , it's a shame , nevertheless it was fun to do . Merry Christmas & a happy new year .

This 105 2.5 optical recipe is 5 elements in 4 group from early 1973 starting with serial Nr. 500001 older lenses have the softer original 5 elements in 3 groups recipe the same as the1953 Nikon S camera recipe

Hola, tengo un tamron 150-600, desmonté la lente , la limpié pero no se van los hongos, creo que tiene dos cristales pegados y están entre ellos, como podria eliminarlos?

I found a perfect setting for my 105mm 1.8. I set the aperture right bewtween the 1.8 and 2.8 clicks. This would be about 2.3. Stopping down this small amount gives me much better sharpness on my subject and still allows for lovely background blur.

hi, stumbled on your video and did the procedure, except taking a distant scene for the infinity setup, so I put it all back in place and will try to take photos of buildings

Merci pour toutes ces explications bien précises. Je voudrais savoir si vous faites le nettoyage d'objectifs pour un particulier. Merci pour votre retour.

Do you have this same video, but for the Nikkor Q 200 mm, the first version? the one with minimun focusing distance of 3 meters

Me interesa ver el vídeo de regrease pentacon pero dice que tengo que hacerme miembro del canal, ¿que tengo que hacer? Felicitades por todo el contenido del canal. Gracias!

Bravo, continuez, très beau travail

Please provide this grease buying link

Bonjour, J'ai un petit doute qui subsiste concernant mon zoom. J'ai un peu galéré, malgré les repères pour revisser la lentille frontale. Hier, depuis que j'ai retrouvé mon trépied, j'ai fait des essais sur la pleine lune, en utilisant le retardateur pour éviter tout flou de ma part. J'ai tout fait en manuel, y compris la mise au point. Au départ, j'avais mis sur ∞, mais ce n'était pas net. J'ai ajusté en manuel oeil dans le viseur de mon D700, ce n'est pas l'idéal avec une pleine lune et un 300mm. Je suis passé en AF-S avec mise au point immédiate et bonne à mon sens.J'ai fait plusieurs essais à des focales différentes, mais je n'ai rien de bien net, pour la lune, toujours à mon sens. Du coup, je me demande si je n'ai pas décalé au remontage et si c'est grave. Cet après-midi j'ai refait des essais AF-S en visant entre 1km et 2 km ce que j'avais depuis chez moi, toutes les photos sont nettes, mais je suis plus près du 10m que de ∞. J'ai fait, toujours avec le 300mm des points sur un poteau à 10m, 3m, c'est toujours net, mais il y a un décalage sur la bague de distance, en gros 7m pour 10m, 3m pour 4m. Je n'ai jamais fait attention à ces valeurs, privilégiant la mise au point dans le viseur. Qu'en pensez-vous ? Merci pour votre aide.

On a very similar subject I was wondering if the Nikon 35-135 f/3.5-4.5 is the same cleaning process ?, the lens looks exactly the same as the 35-75 . f2.8 ?.

Thank you for your amazing support , my second 35-70mm f/2.8 lens arrived from Ebay , I successfully cleaned the lens and I can now refit the front element focus without any problem as I have had plenty of practice . Unfortunately the rear of the lens is are two lenses that are sealed together , these lenses had coating distortion blotches at the side of the elements , these elements are cemented together so I couldn't clean in between ,the small blotches wasn't that bad & the lens worked perfectly with no picture quality loss , nevertheless I decided to sell that lens very cheap . I think these elements can very carefully be separated by cutting through the cement & refitted with industrial tape ?.

I just done the same with my Nikon Z7ii and when I put it back together no power. 🙈

Podre hacer los mismo con un sigma 150-600mm? 😔

Would it work to use a clip in filter for a full spectrum camera to adjust for backfocus? I was thinking that I could then switch between clear, HA, Oiii and Sii.