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Full Version: Water Inside Lens, Oil, Cannot Disassmble. What To Do?
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b0rna
so i got this expensive lens...around 75 us from izzotek...
it took a dive. don't ask how. lately i have been very unlucky. (edit: my new camera's lens also took a dive with the camera (digital rebel xti) and broke on impact. That added with my pj lens, that makes an unlucky lens week.)

Some water entered the lens. The lens is fixed and cannot be disassembled. there is moisture and dry residue on the inside of the lens.

is there any way of cleaning the lens at this point?

I thought of allowing distilled water to fill it, overnight. Than letting it dry. There is still a chance of moisture staying/fungus.

My other idea was drilling 2 holes on the side of the lens. Than washing and drying and eventually sealing the triplet. At this point i really done want to order a new lens.

What can i do?
fmerrill
Well, you say it can't be disassembled, but, it had to be assembled in some way.
Almost anything can be taken apart, in some way or another.
b0rna
QUOTE (fmerrill @ Jul 26 2007, 08:30 PM) *
Well, you say it can't be disassembled, but, it had to be assembled in some way.
Almost anything can be taken apart, in some way or another.



yes. i believe that too. however, this lens has a solid metal shell. On the inside there are grooves. like a bolt. but not spiral. The grooves are parallel to each other. the lenses sit in between two grooves. The whole thing is one metal piece. which makes me wonder how the lens was fitted to begin with. In that case some glue may have been used. However i cannot find any on the edges of the lens. Im not sure how it was assembled. will post pictures later.
irjenius
so I am not sure whether or not this would work but you could try buying some desicant (stuff used in eliminate moisture) and puting your lense and a bunch of desicant in a shoes box and sealing the box. If you let the desicant sit you would eliminate all of the moisture in the air and I think that it may "pull" the water out of the lense and dry the inside of your lense.

I am not sure whether or not this will work but you could try getting a small jar of desicant from a place like Fischer Scientific.

...Good Luck
greeneyed
The only problem with desiccant is when is does dry you probably will have mineral deposits inside the lens.

Pictures are needed to really be able to help try and figures out how to open it up.
samuraijack
QUOTE (greeneyed @ Jul 27 2007, 07:23 AM) *
The only problem with desiccant is when is does dry you probably will have mineral deposits inside the lens.

Pictures are needed to really be able to help try and figures out how to open it up.


Greeneyed is right. You will have mineral spots left over. The problem is that the stamp method( pressure insertion) does not work very well with metal and glass lenses. Its usually saved for very low end lenses and they make the barrel out of maleable plastic. The break rate for these is still high...

Take the lens and examine the INSIDE of each end of the barrel. You might see a small band on the inside with either a few MM of seperation ( expansion band) or small band with notches in the 180 Degree points of the circle, or perhaps one. The expansion bands can be renoved VERY gently with a very fine screwdrive or knife. The other type can be thought of as a screw. Place a very small flathead in the groove and rotate the ring to the left. Be VERY careful not to slip the driver onto the lense...

BEFORE YOU START!!!!!

Get a lense pen from a local optics shop. They are about 9.00 dollars. DONT try to dry the lenses with any type of cloth or paper. If there is a coating on the lense you will take it right off.

Make a rig that will hold the lenses and handle the whole thing with gloves on. When you take the lenses out, be really conscious of the direction the lenses faced in the barrel and keep that order. If you are laying them down, make sure they all lay the SAME way.

Pictures would be a great help! wink.gif Good luck!

SJ
b0rna
Thank you all.

The problem with the moisture is that at the end of the day, the lens is still 99% sealed. and no matter what kind of materials used to absorb it, most of it will be retained inside the lens as its near air tight.

Samuraijack you are very knowledgeable and correct. There is a ring holding the lens in place. I do have the correct tools to remove this ring. However, its very fit and machined. Im planning to drill holes on the side, to clean and dry the lens of moisture. Since the inner surface was never touched, only rinsed with dirt and smudge oils, i'm hoping i can rinse it out with distilled water/solutions. Does anyone know of any solution in particular that is capable of cleaning the inside of the lens with out a touch of the hand?






Thats before the incident.
fmerrill
If you drill holes into the body of that lens, you are more than likely going to introduce shavings from the drilling of it. You mention you have the right tools, I assume it's a spanner wrench? You don't think it will come loose for some reason?

Anyway, no matter what you do with it, good luck!
b0rna
QUOTE (fmerrill @ Jul 27 2007, 04:31 PM) *
If you drill holes into the body of that lens, you are more than likely going to introduce shavings from the drilling of it. You mention you have the right tools, I assume it's a spanner wrench? You don't think it will come loose for some reason?

Anyway, no matter what you do with it, good luck!



i have a friend thats quiet good at this. we drilled the holes just now. was cleaning the leftovers like mad. he had a special tool to smoothen the leftovers without getting any inside the lens.

Now i just need to clean it. Will post pics when i,m successful. Hopefully soon!
greeneyed
Good luck.
I still think the best solution would be to open it up and clean it.
You will probably need to seal the holes after you are done.
Otherwise I feel you might have a problem with condensation.
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