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Noritar
Joined: 25 Jul 2024
Posts: 41
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 Posted: Sun Oct 06, 2024 7:35 pm Post subject: Unusual haze. Expect it to clean up? |
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Noritar wrote:
This is in the rear optical group of a Schneider 60mm Curtagon for Exakta 66/P6. This was costly but also hard to find. I'm weighing having it serviced vs returning it. I believe there is a cemented elements in the rear group, but I can't find optical diagrams for these Schneider made Exakta 66 lenses (I have 60/80/150/250). There is another Curtagon for auction right now with identical rear group haze. Pics below. Those concentric rings in the haze/fungus make nervous about some sort of atypical separation...?
Opinions?
Last edited by Noritar on Sun Oct 06, 2024 7:47 pm; edited 2 times in total |
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Noritar
Joined: 25 Jul 2024
Posts: 41
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| Posted: Sun Oct 06, 2024 7:36 pm Post subject: |
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Noritar wrote:
#1
#2
#3
#4
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Noritar
Joined: 25 Jul 2024
Posts: 41
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| Posted: Sun Oct 06, 2024 7:41 pm Post subject: |
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Noritar wrote:
It looks just like in the video posted to this one for sale: Click here to see on Ebay
Last edited by Noritar on Sun Oct 06, 2024 8:41 pm; edited 1 time in total |
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visualopsins
Joined: 05 Mar 2009
Posts: 11069
Location: California
Expire: 2025-04-11
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| Posted: Sun Oct 06, 2024 8:17 pm Post subject: |
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visualopsins wrote:
Tip: when using the EBAY and EBAY.de buttons use the item number only, not the item link.
Here's the fixed link Click here to see on Ebay
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Noritar
Joined: 25 Jul 2024
Posts: 41
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| Posted: Sun Oct 06, 2024 8:42 pm Post subject: |
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Noritar wrote:
| Quote: |
Tip: when using the EBAY and EBAY.de buttons use the item number only, not the item link.
Here's the fixed link Click here to see on Ebay |
Fixed! Thanks for the tip. |
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kiddo
Joined: 29 Jun 2018
Posts: 1275
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| Posted: Fri Nov 01, 2024 5:50 pm Post subject: |
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kiddo wrote:
almost always, in my case, haze have hiden more issues than seen before cleaning, and those issues have gotten to be worse |
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stevemark
Joined: 29 Apr 2011
Posts: 4088
Location: Switzerland
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| Posted: Sat Nov 02, 2024 1:12 pm Post subject: Re: Unusual haze. Expect it to clean up? |
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stevemark wrote:
| Noritar wrote: |
This is in the rear optical group of a Schneider 60mm Curtagon for Exakta 66/P6. ... I believe there is a cemented elements in the rear group, but I can't find optical diagrams for these Schneider made Exakta 66 lenses (I have 60/80/150/250). ... Those concentric rings in the haze/fungus make nervous about some sort of atypical separation...?
Opinions? |
According to Lens BD the Schneider Curtagon 60mm for 6x6 Exacta would be a [7/7] construction, thus no doublet which could have problems with cementing: https://lens-db.com/schneider-kreuznach-curtagon-60mm-f35-multicoating-s-1984/
Not sure if that's true, but the pollution on the images shown above don't look like a typical "hazy" cemented group e. g. from Sigma (in other words it looks more like a polluted lens surface)
S
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Noritar
Joined: 25 Jul 2024
Posts: 41
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| Posted: Mon Nov 04, 2024 12:51 pm Post subject: Re: Unusual haze. Expect it to clean up? |
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Noritar wrote:
| stevemark wrote: |
According to Lens BD the Schneider Curtagon 60mm for 6x6 Exacta would be a [7/7] construction, thus no doublet which could have problems with cementing: https://lens-db.com/schneider-kreuznach-curtagon-60mm-f35-multicoating-s-1984/
Not sure if that's true, but the pollution on the images shown above don't look like a typical "hazy" cemented group e. g. from Sigma (in other words it looks more like a polluted lens surface)
S |
That's helpful. Thank you. I kept the lens, but haven't sent it in for service yet. I was trying to decide who to send it to and got busy with other things. I have a feeling it will clean up nicely. |
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