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JayUSA
Joined: 09 Dec 2008 Posts: 8
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Posted: Mon Feb 13, 2012 5:32 am Post subject: Remove dust from front glass of a multi-coated vintage lens? |
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JayUSA wrote:
Hi Everyone,
The front glass of several of my lenses have dust on them. Perhaps I should have put UV filters on them... but in the meantime, how do I safely remove the dust?
Cheers,
Jay |
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kds315*
Joined: 12 Mar 2008 Posts: 16628 Location: Weinheim, Germany
Expire: 2021-03-09
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Posted: Mon Feb 13, 2012 10:41 am Post subject: |
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kds315* wrote:
Rubber blower, then clean microfiber cloth if it is too much. A little dust, just leave it on,
it has no impact on pictures. _________________ 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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ForenSeil
Joined: 15 Apr 2011 Posts: 2726 Location: Kiel, Germany.
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Posted: Mon Feb 13, 2012 1:25 pm Post subject: |
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ForenSeil wrote:
kds315* wrote: |
Rubber blower, then clean microfiber cloth if it is too much. A little dust, just leave it on,
it has no impact on pictures. |
+1 + fine brush
Don't clean lenses more than necessary.
If a clean microfiber cloth isn't enoug, use clean (!) methyl-, ethyl- or isopropyl alcohol or clean ether as solvent.
If lens partially made plastic be careful as it might get attacket slightly by the solvent. And especially don't use acetone on plastic lenses.
Don't use lyes, acids or oxidizers as long it's not absolutely necessary. They may remove the coatings. Even a weak base like ammonia (which is contained in many comercial window/glas cleaning aids) is able to dissolve magnesium fluoride slowly which is contained in many coatings.
When you have a problem with chalk on you lens try thinned vinegar (acetic acid) or a similar weak acid.
Don't let undistilled water dry on your lens. Undistilled contains Ca(OH)2, CaCO3, Mg(OH)2,.... etc. which may also interact with and damage the coatings.
Sometimes even raindrops are able to damage coatings when you let them dry on the lens. _________________ I'm not a collector, I'm a tester
My camera: Sony A7+Zeiss Sonnar 55/1.8
Current favourite lenses (I have many more):
A few macro-Tominons, Samyang 12/2.8, Noritsu 50.7/9.5, Rodagon 105/5.6 on bellows, Samyang 135/2, Nikon ED 180/2.8, Leitz Elmar-R 250/4, Celestron C8 2000mm F10
Most wanted: Samyang 24/1.4, Samyang 35/1.4, Nikon 200/2 ED
My Blog: http://picturechemistry.own-blog.com/
(German language)
Last edited by ForenSeil on Mon Feb 13, 2012 8:44 pm; edited 1 time in total |
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visualopsins
Joined: 05 Mar 2009 Posts: 10959 Location: California
Expire: 2025-04-11
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Posted: Mon Feb 13, 2012 5:10 pm Post subject: |
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visualopsins wrote:
I will disagree with others here to say any dust not easily removed with blower and gentle wipe with new micro-fiber pad, is stuck to the coating, and should be cleaned, using a drop or two of reagent grade alcohol (Eclipse) on the corner of a new micro-fiber pad. _________________ ☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮ like attracts like! ☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮☮
Cameras: Sony ILCE-7RM2, Spotmatics II, F, and ESII, Nikon P4
Lenses:
M42 Asahi Optical Co., Takumar 1:4 f=35mm, 1:2 f=58mm (Sonnar), 1:2.4 f=58mm (Heliar), 1:2.2 f=55mm (Gaussian), 1:2.8 f=105mm (Model I), 1:2.8/105 (Model II), 1:5.6/200, Tele-Takumar 1:5.6/200, 1:6.3/300, Macro-Takumar 1:4/50, Auto-Takumar 1:2.3 f=35, 1:1.8 f=55mm, 1:2.2 f=55mm, Super-TAKUMAR 1:3.5/28 (fat), 1:2/35 (Fat), 1:1.4/50 (8-element), Super-Multi-Coated Fisheye-TAKUMAR 1:4/17, Super-Multi-Coated TAKUMAR 1:4.5/20, 1:3.5/24, 1:3.5/28, 1:2/35, 1:3.5/35, 1:1.8/85, 1:1.9/85 1:2.8/105, 1:3.5/135, 1:2.5/135 (II), 1:4/150, 1:4/200, 1:4/300, 1:4.5/500, Super-Multi-Coated Macro-TAKUMAR 1:4/50, 1:4/100, Super-Multi-Coated Bellows-TAKUMAR 1:4/100, SMC TAKUMAR 1:1.4/50, 1:1.8/55
M42 Carl Zeiss Jena Flektogon 2.4/35
Contax Carl Zeiss Vario-Sonnar T* 28-70mm F3.5-4.5
Pentax K-mount SMC PENTAX-A ZOOM 1:3.5 35~105mm, SMC PENTAX ZOOM 1:4 45~125mm
Nikon Micro-NIKKOR-P-C Auto 1:3.5 f=55mm, NIKKOR-P Auto 105mm f/2.5 Pre-AI (Sonnar), Micro-NIKKOR 105mm 1:4 AI, NIKKOR AI-S 35-135mm f/3,5-4,5
Tamron SP 17mm f/3.5 (51B), Tamron SP 17mm f/3.5 (151B), SP 500mm f/8 (55BB), SP 70-210mm f/3.5 (19AH)
Vivitar 100mm 1:2.8 MC 1:1 Macro Telephoto (Kiron)
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jito
Joined: 29 Nov 2011 Posts: 113
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Posted: Mon Feb 13, 2012 6:30 pm Post subject: |
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jito wrote:
An artist brush with thin/smooth fibers is a great tool for general cleaning of camera gear.
I honestly doubt that camera cleaning gear is as gentle as a soft artist brush.
That and a blower should be among the safest options. |
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Mos6502
Joined: 20 Jun 2011 Posts: 960 Location: Austin
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Posted: Mon Feb 13, 2012 7:22 pm Post subject: |
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Mos6502 wrote:
I have a medium flat watercolor brush that I use to dust lenses and viewfinders.
If it is dust that has been on the lens for a really long time and so won't blow off or brush off then a Q-tip with lighter fluid will usually make it off. Just don't end up rubbing the dirt in.
For tough dirt and grime you may have to get out the windex though. Luckily the only lenses I've had that were dirty enough for that were uncoated. |
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ForenSeil
Joined: 15 Apr 2011 Posts: 2726 Location: Kiel, Germany.
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Posted: Tue Feb 14, 2012 11:33 am Post subject: |
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ForenSeil wrote:
visualopsins wrote: |
I will disagree with others here to say any dust not easily removed with blower and gentle wipe with new micro-fiber pad, is stuck to the coating, and should be cleaned, using a drop or two of reagent grade alcohol (Eclipse) on the corner of a new micro-fiber pad. |
Eclipse is overpriced methanol as far as I know.
Methanol is sligthly better than ethanol and isopropanol as it has a slightly lower tendency to dissolve plastic from the lens. But it's a little poisonous so keep that in mind.
Good lighter fluid is only better for oily, waxy or fatty stains (for example the lube from helicoids), for everything else the clean alcohols (MeOH, EtOH and IPA) should be better.
And don't use any bad smelling cheap lighter fluid... at best get petrol ether/bezine from an pharmacy (can be bought as "Wundbenzin" to remove plaster stains from skin in Germany) _________________ I'm not a collector, I'm a tester
My camera: Sony A7+Zeiss Sonnar 55/1.8
Current favourite lenses (I have many more):
A few macro-Tominons, Samyang 12/2.8, Noritsu 50.7/9.5, Rodagon 105/5.6 on bellows, Samyang 135/2, Nikon ED 180/2.8, Leitz Elmar-R 250/4, Celestron C8 2000mm F10
Most wanted: Samyang 24/1.4, Samyang 35/1.4, Nikon 200/2 ED
My Blog: http://picturechemistry.own-blog.com/
(German language) |
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kansalliskala
Joined: 19 Jul 2007 Posts: 5037 Location: Southern Finland countryside
Expire: 2016-12-30
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Posted: Fri Mar 14, 2014 12:49 pm Post subject: |
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kansalliskala wrote:
ForenSeil wrote: |
And don't use any bad smelling cheap lighter fluid... at best get petrol ether/bezine from an pharmacy (can be bought as "Wundbenzin" to remove plaster stains from skin in Germany) |
How about bourbon? _________________ MF: Kodak DCS SLR/c; Samsung NX10; OM-10; Canon T50
Zuiko 28/3.5, Distagon 35/2.8; Yashica ML 50/2;
Zuiko 50/1.4; S-M-C 120/2.8; Zuiko 135/3.5; 200/5;
Tamron AD1 135/2.8, Soligor 180/3.5; Tamron AD1 300/5.6
Tamron zooms: 01A, Z-210
Yashicaflex C; Київ 4 + Юпитер 8, 11; Polaroid 100; Olympus XA; Yashica T3
Museum stuff: Certo-Phot; Tele-Edixon 135; Polaris 90-190; Asahi Bellows; Ixus IIs
Projects: Agfa Isolette III (no shutter), Canon AE-1D (no sensor),
Nikon D80 (dead), The "Peace Camera"
AF: Canon, Tokina, Sigma Video: JVC GZ-MG275E |
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memetph
Joined: 01 Dec 2013 Posts: 940 Location: Poland
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Posted: Fri Mar 14, 2014 2:05 pm Post subject: |
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memetph wrote:
Very bad. Prefer single malt. |
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