Would spots of separation on rear lens affect image quality?

[Dan Fromm]

We're allowed to say "eBay" here. eBay eBay eBay

I think, could be mistaken, that some posters here believe in magic. They regard eBay and PayPal as evil, seem to fear that mentioning them explicitly instead of saying "auction site/payments site that must not be mentioned" will bring them bad luck or worse.

At least one of the moderators insists that posts here are for the ages. eBay listings are ephemeral, so posts that link to them can't be for the ages. The right and acceptable to the moderators way to mention eBay listings here is to archive the listing on archive.org and then post a link to the listing on archive.org.

I think this is all pretty silly but comply with the moderators' decision.

[Hugo Zhang]

OK, I am going to post an eBay link as it is showing the problem rear element of the lens I just received this morning. On the ground glass with 4x loupe, I can't tell the image from this lens from other normal lenses.

https://www.ebay.com/itm/Voigtlander...72.m2749.l2649

Should I get the rear element repaired anyway?

[minh0204]

Rebonded, they looked brand new.

Cheers,
Jason

Jason, do you have any recommendation for bonding agents for multi-coated elements that laypeople can buy?

[Dan Fromm]

OK, I am going to post an eBay link as it is showing the problem rear element of the lens I just received this morning. On the ground glass with 4x loupe, I can't tell the image from this lens from other normal lenses.

https://www.ebay.com/itm/Voigtlander...72.m2749.l2649

Should I get the rear element repaired anyway?

Are you going to use it or sell it?

[Hugo Zhang]

Are you going to use it or sell it?

Use it. I just want to have confirmations from other experienced members that it is fine to use it. Maybe my naked eyes are not that good.

[Jim Galli]

Use it. I just want to have confirmations from other experienced members that it is fine to use it. Maybe my naked eyes are not that good.

Hugo, you'd never be able to tell any difference if it was perfect. But although I believe it doesn't affect image, it DOES affect value. Probably by half or less. I think these are caused between the layers in the cement by non clean room environments when assembled. The guy probably had a sneeze, and said, oh what the heck . . .

[Dan Fromm]

Use it. I just want to have confirmations from other experienced members that it is fine to use it. Maybe my naked eyes are not that good.

Hugo, I'm ashamed of you. Where have your self-confidence and willingness to try things gone?

[Nodda Duma]

Jason, do you have any recommendation for bonding agents for multi-coated elements that laypeople can buy?

Canada balsam. Need to know / learn how to use it.

[Jim Noel]

It definitely is fungus. let it go.