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BasilB
Joined: 15 Mar 2017 Posts: 3
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Posted: Wed Mar 15, 2017 4:17 am Post subject: Meyer Optik Trioplan 100mm f2.8 - grease on aperture blades? |
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BasilB wrote:
Advice needed please.
I just purchased on EBay a Trioplan 100mm f2.8 Meyer Optik vintage lens that was described as having oil free blades.
Inspection through the front lens with a flashlight reveals patches of a brown substance that appears to be dry (see photos). Is this normal or could this be dried grease?
The aperture blades currently operate smoothly.
There is also substantial micro dust on the internal elements, but this does not seem to affect image quality.
Should I consider returning the lens or are these apparent defects normal?
Also are repairs to the Trioplan 100 easy to carry out for a novice?
Thanks in advance for any help.
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Gardener
Joined: 22 Sep 2013 Posts: 950 Location: USA
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Posted: Wed Mar 15, 2017 5:06 am Post subject: |
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Gardener wrote:
That really looks more like rust. Definitely not oil. Re: returning - that's entirely up to you. If you feel that you could get a better copy for the kind of money you've paid - sure, return it, or it will gnaw on you. |
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DigiChromeEd
Joined: 29 Dec 2009 Posts: 3461 Location: Northern Ireland
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Posted: Wed Mar 15, 2017 6:01 am Post subject: Re: Meyer Optik Trioplan 100mm f2.8 - grease on aperture bla |
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DigiChromeEd wrote:
BasilB wrote: |
Advice needed please.
I just purchased on EBay a Trioplan 100mm f2.8 Meyer Optik vintage lens that was described as having oil free blades.
Inspection through the front lens with a flashlight reveals patches of a brown substance that appears to be dry (see photos). Is this normal or could this be dried grease?
The aperture blades currently operate smoothly.
There is also substantial micro dust on the internal elements, but this does not seem to affect image quality.
Should I consider returning the lens or are these apparent defects normal?
Also are repairs to the Trioplan 100 easy to carry out for a novice?
Thanks in advance for any help.
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_________________ "I've got a Nikon camera, I like to take a photograph" - Paul Simon |
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BasilB
Joined: 15 Mar 2017 Posts: 3
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Posted: Wed Mar 15, 2017 6:49 am Post subject: |
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BasilB wrote:
Thank you for your reply.
Good to know it is not oil.
From the photos it does look a bit like rust but when seen with a flashlight it is definitely not rust.
It looks like a shiny brown viscous substance more like dried glue or lacquer (some parts have a raised surfaces as if they have run and then dried) - see additional photo for a better representation.
Can I assume that this condition will not cause future problems with the aperture blades seizing?
Thanks again
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kds315*
Joined: 12 Mar 2008 Posts: 16497 Location: Weinheim, Germany
Expire: 2021-03-09
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Posted: Wed Mar 15, 2017 8:05 am Post subject: |
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kds315* wrote:
I'd say it is old grease which made its way to the iris, which other "viscous substance"
would there exist in a lens? _________________ Klaus - Admin
"S'il vient a point, me souviendra" [Thomas Bohier (1460-1523)]
http://www.macrolenses.de for macro and special lens info
http://www.pbase.com/kds315/uv_photos for UV Images and lens/filter info
https://www.flickr.com/photos/kds315/albums my albums using various lenses
http://photographyoftheinvisibleworld.blogspot.com/ my UV BLOG
http://www.travelmeetsfood.com/blog Food + Travel BLOG
https://galeriafotografia.com Architecture + Drone photography
Currently most FAV lens(es):
X80QF f3.2/80mm
Hypergon f11/26mm
ELCAN UV f5.6/52mm
Zeiss UV-Planar f4/60mm
Zeiss UV-Planar f2/62mm
Lomo Уфар-12 f2.5/41mm
Lomo Зуфар-2 f4.0/350mm
Lomo ZIKAR-1A f1.2/100mm
Nikon UV Nikkor f4.5/105mm
Zeiss UV-Sonnar f4.3/105mm
CERCO UV-VIS-NIR f1.8/45mm
CERCO UV-VIS-NIR f4.1/94mm
CERCO UV-VIS-NIR f2.8/100mm
Steinheil Quarzobjektiv f1.8/50mm
Pentax Quartz Takumar f3.5/85mm
Carl Zeiss Jena UV-Objektiv f4/60mm
NYE OPTICAL Lyman-Alpha II f1.1/90mm
NYE OPTICAL Lyman-Alpha I f2.8/200mm
COASTAL OPTICS f4/60mm UV-VIS-IR Apo
COASTAL OPTICS f4.5/105mm UV-Micro-Apo
Pentax Ultra-Achromatic Takumar f4.5/85mm
Pentax Ultra-Achromatic Takumar f5.6/300mm
Rodenstock UV-Rodagon f5.6/60mm + 105mm + 150mm
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Lloydy
Joined: 02 Sep 2009 Posts: 7775 Location: Ironbridge. UK.
Expire: 2022-01-01
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Posted: Wed Mar 15, 2017 10:57 am Post subject: |
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Lloydy wrote:
It takes very little interference with the movement of the blades to make them bend and jump out of their location. With luck, they spring into their flat state and can be cleaned and put back into place. In my opinion that lens needs to be opened up and cleaned properly. _________________ LENSES & CAMERAS FOR SALE.....
I have loads of stuff that I have to get rid of, if you see me commenting about something I have got and you want one, ask me.
My Flickr https://www.flickr.com/photos/mudplugga/
My ipernity -
http://www.ipernity.com/home/294337 |
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BasilB
Joined: 15 Mar 2017 Posts: 3
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Posted: Wed Mar 15, 2017 9:19 pm Post subject: |
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BasilB wrote:
Thank you to all for the helpful replies.
Looks like I will have to return the item.
For interest can any one please recommend a good Vintage lens repair/cleaning specialist in Canada together with an approximate cost of cleaning the grease from the aperture blades and removal of micro-dust from inner lens elements?
Thanks in advance. |
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