georgemvg said:
Hi again! I removed the first glass of my lens and that is what I saw!
View attachment 55166
What's that?
Anyway, after removing that glass I had the brilliant idea to use WD40 to lubricate the shutter leaves. They move now, but not as they should. Any idea for a more proper lubricant or how to continue from where I am to open the lens and reach the shutter?
View attachment 55168
I do not know what you have in your lens there, but it almost looks like delamination, aka seperation. If so, the element is probably a lost cause. However, I really do not know what that is.
As to the WD-40, I have never tried that as a cleaning agent for a lens shutter, but I would have advised against it. It is a cleaner and degreaser, although people often think it is a lubricant. It does not completely evaporate to the best of my knowledge.
I use Ronsonol or Zippo liquid lighter fluid (also known as 'naptha' in the US). Sells for about a dollar at the check out stand of your local convenience or drugstore. It is highly flammable, so it should be used in a well-ventilated area. I would imagine it is not too good for your lungs to breathe the fumes in either.
Some advocate 'flood cleaning' using this liquid - I use a saturated q-tip and very, very, gentle cleaning motions on the shutter leaves, exercising them in and out and then burnishing them with a series of clean dry q-tips until no traces of lighter fluid remain after the lens shutter leaves (or aperture leaves, if that is what you are cleaning) remain. It takes a lot of patience and a very light touch. If you flood-clean, you should also remove the rear element, as it will become saturated with the fluid as well. One needs access to a proper spanner wrench to do this, typically.
I have been doing this for years, and my success rate is better than it used to be, but I still lose about 1/3 of my patients.
The only other method I am aware of is turning it over to a proper repair person for a CLA (clean, lube, adjust) which can be more expensive than the camera is worth - your choice.