Hello, my name is Scott and I'm a photoholic.

[monkeykoder]

I think the trick might also include not touching any more of the lens cloth than you have to.

 

[Battou]

I think the trick might also include not touching any more of the lens cloth than you have to.

lol yeah, that is why multiples, I usually lay the big one down on the desk untill I have to move the glass. I do this instenctivly so it did not cross my mind.

 

[Battou]

Focus ring was jammed which didn't take long to fix but I've spent the rest of the time trying to get all the glass clean.

So, what are you using for lub on the focusing ring?

 

[monkeykoder]

Didn't use anything trying to keep from adding anything seems to work fine once I got the threads back on track.

 

[Battou]

It'll get stuck again.


But anyway, Next time you tear it down, get a thing of wax and grease remover and clean it out and regrease it.

I don't know if it's the best stuff to use but, I used some White lith grease I had loafin around when I tore down my Gemini 80 - 200, and the thing focuses smoother than it did from the factory.

 

[monkeykoder]

It looked to me like there was plenty of grease left. It seemed the only problem was the fact that the threads were off track (by a large margin like 3-4 threads)

 

[Battou]

It looked to me like there was plenty of grease left. It seemed the only problem was the fact that the threads were off track (by a large margin like 3-4 threads)

I can't think of anything that would cause a dethreading like that other than crossthreading or worn threads or a combination of.

Did you by chance get a good look at the grease, Where there shavings or metal dust in it?

 

[monkeykoder]

I can think of at least one and it involves someone going "Oops".

 

[Battou]

A drop won't do that much damage unless the ring catches on something on the way down.

 

[monkeykoder]

I'm just guessing but that is what it looked like.

 

[monkeykoder]

Yeah it seems the grease just coats the lens cloth and then you're wiping grease into your lenses.

 

[Battou]

I'm just guessing but that is what it looked like.

Yeah, the focusing ring in and of it self does not have the weight to overtake the resistance of the thread and carry on a drop, the most it would do is travel along the threads as if it where focusing

Yeah it seems the grease just coats the lens cloth and then you're wiping grease into your lenses.

Wait what....how did you do this?

 

[monkeykoder]

Just touching the lens cloth.

 

[Battou]

Ouch....I kinda figured you would have some paper towels handy for that sort of thing......

 

[monkeykoder]

Maybe I should never tried it before I'll know better next time (say when I finally get around to trying to see if I can get the fungus out of the 200mm)...