Lens lubrication needed

[Yi-P]

Has anyone here came into lubrication drying up problems?

One of the oldies here is starting to make wierd noises when autofocusing. It is fine all the way with manual focus and slower focuses, just that when you turn the focus ring quickly, so as does with the camera AF, there are some dried up scritching sound from there lens itself.

Has anyone done lens lubrication themselves or where should I take the lens to do this??

[moggy]

Myself I would get it looked at professionally, that is assuming that the lens is worth the expense. You could give yourself a lot of grief if you are unsure what you are doing.

Bob.

.

[Yi-P]

Myself I would get it looked at professionally, that is assuming that the lens is worth the expense. You could give yourself a lot of grief if you are unsure what you are doing.

Bob.

.

Im thinking the same, but just asking for opinions, and where should I take it?? Not Maxwell....

[big pix]

if you can see scratch's you may have an internal screw loose........ or sand

[digitor]

Has anyone here came into lubrication drying up problems?

Hmm, I'm not touching this one!

One of the oldies here is starting to make wierd noises when autofocusing.

Are we talking about a photographer, or a lens?

It is fine all the way with manual focus and slower focuses, just that when you turn the focus ring quickly, so as does with the camera AF, there are some dried up scritching sound from there lens itself.

Has anyone done lens lubrication themselves or where should I take the lens to do this??

But seriously folks, the focusing mechanisms in AF lenses ususally run dry, so the noises you hear are probably due to dust and dirt in the threads. Dismantling and cleaning (and especially putting it back together) is best left to the professionals.

Cheers

[Yi-P]

But seriously folks, the focusing mechanisms in AF lenses ususally run dry, so the noises you hear are probably due to dust and dirt in the threads. Dismantling and cleaning (and especially putting it back together) is best left to the professionals.

Cheers

Where can I get a professional to check this out? Thanks!

[LostDingo]

I don't think you would want to lube yourself lenses don't have WD-40 or similar for lubrication...better leave with experienced service people

from what you have said and others I agree....sounds like mayeba piece of sand could have gotten in...albeit a very miniscule size

[birddog114]

Dip it into a bucket of bio-diesel for 1/2 hour, then take it out and it's lubricated

For professional inspection of the lens, pls. consider:
- Does that worth to pay for servicing that lens?
- Lacking replacement parts for the old lens
May be keep and use it as it and save up to buy a decent unit.

[Yi-P]

Birddog, how much do you think it will going to cost if I send to for service?

Its an old 300mm f4 AF (late 90s). I cant remember of using it anywhere with dusty conditions. I can hardly see dust (if any) inside the lens when looking through.

The noise occurs only when the lens is set to autofocus (that is, the focus ring does not rotate with the AF drive). If I set the lens to M (camera still on A), the focus ring rotates and makes no noise at all... My guess is some lubrication problem with the focus ring (when turning the focus ring fast in manual, sound is there, slowly has no problem).

I dont have enough $ to buy myself a new lens of this type right now... so I have to choose to service it...

[birddog114]

Birddog, how much do you think it will going to cost if I send to for service?

Its an old 300mm f4 AF (late 90s). I cant remember of using it anywhere with dusty conditions. I can hardly see dust (if any) inside the lens when looking through.

The noise occurs only when the lens is set to autofocus (that is, the focus ring does not rotate with the AF drive). If I set the lens to M (camera still on A), the focus ring rotates and makes no noise at all... My guess is some lubrication problem with the focus ring (when turning the focus ring fast in manual, sound is there, slowly has no problem).

I dont have enough $ to buy myself a new lens of this type right now... so I have to choose to service it...

Well, to be honest, just stick to what you have, not worth to send it in for service, it may cost you more than what you can buy it at market price.

[Dargan]

Are there any threads members know that relate to servicing lenses yourself? I might buy an old lens just to pull it apart and see what is inside if I had some directions to go by. It can't be that daunting as I have seen threads on adjusting the mirror on a D70 elsewhere for backfocus. That would worry me.

[LostDingo]

Are there any threads members know that relate to servicing lenses yourself? I might buy an old lens just to pull it apart and see what is inside if I had some directions to go by. It can't be that daunting as I have seen threads on adjusting the mirror on a D70 elsewhere for backfocus. That would worry me.

Borrow Birdy's 200-400 VR and don't tell him it is for scientific purposes

And think how much easier it would be to work on a large lens...may need an impact wrench to break the screws loose

[Dargan]

I couldn't be that cruel LostDingo I was thinking a nice cheap Ais lens coz I love tinkering

[Yi-P]

I took the drop-in filter away, to take a little peek inside the lens.

Found out that there is a little rust on the wheel/shaft that gets the drive from the camera's AF screw.

The problem seems very minor, but sound is very annoying. What sort of lubricants can I apply to a lens??