Maybe S K Grimes. They used to do lens repairs like re-cementing lens groups. I have had them make retaining rings in the past and was quite happy with them.
Has the op used the lens? The haze may not affect their photos. This can be an expensive repair, and there may be a long wait time to get the repair done. I've been there several times with this problem.
I would sell the lens and buy another one that was clean, but not before seeing how the lens they have now actually performs.
I had a problem with cement degradation on a 80mm f/4 macro lens (M645). It wasn't delamination where the elements become separated with a rainbow interference pattern. Looked exactly like haze. It might be caused by solvent bubbling in the Canadian balsam during cure?
Edit: I ended up returning the lens. In your case you could double-check by removing the elements. The lens is a bit more complex than the 80mm f/4.
Yes but please note the RAINBOW qualification.
Delamination is characterized by a rainbow. Looks like haze, but it’s delamination. You can’t clean the rainbow, needs to be glued.
Haze can be cleaned and it never between elements. Between elements is delamination.
I called all the repair shops in NYC and none can work on this.
Haze can’t really take plsce between cemented elements. And this doesn’t look like delamination. Looks like an easy job to me.
Haze can’t really take plsce between cemented elements. And this doesn’t look like delamination. Looks like an easy job to me.
Haze can definitely occur in the cemented bond — even if not balsam — if not properly used at the factory. I’ve repaired quite a few doublets from the 60s/70s era which had hazy cement.
This is very common on the f/1.9 80mm lens, I see many of them with this issue. The damage is between the cemented doublet and can't be cleaned off.
You can unglue the elements and reglue it yourself. Not very hard actually.
separate both lenses, clean them. Then, glue them together with a tiny drop of cement right in the center (canada balsam or any lens glue) and squeeze both elements together. The glue will spread and cover completely.
Cure with UV or with time, depending on which glue you have used.
Be as accurate as possible, centering both lenses. It’s not difficult.
Ok, I guess the question is how do you separate the glued lenses. What tools so nothing gets damaged? And then how do you clean the old glue off the previously cemented pieces? A solvent? What kind? Would any mechanical cleaning be involved?
Curious because I sold that lens fully disclosed as being hazed (whatever you want to call it, looking at it, it was hazed) and so suitable for soft contrast shots. It could have been interesting to take a crack at it. But also it was interesting that no repair shop I contacted wanted to touch it. Which, according to your instructions, seems odd if it was as simple as you make it out to be.
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