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ForenSeil
Joined: 15 Apr 2011
Posts: 2726
Location: Kiel, Germany.
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 Posted: Thu Nov 24, 2011 8:25 pm Post subject: Golden spots on Fed-2? What is it? |
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ForenSeil wrote:
I have 3 Fed-2s here. One is having this issue.
It tried to scratch it away with a screw driver but it's not dirt etc. It's a soft metal.
What is this? Copper? Brass? Is there a way to remove these spots except varnishing the whole body or to make the whole camera golden?
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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/
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Attila
Joined: 24 Feb 2007
Posts: 57865
Location: Hungary
Expire: 2025-11-18
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| Posted: Thu Nov 24, 2011 10:25 pm Post subject: |
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Attila wrote:
It looks to me something acid ? did drop on surface and genuine brass is visible
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Items on sale on Ebay
Sony NEX-7 Carl Zeiss Planar 85mm f1.4, Minolta MD 35mm f1.8, Konica 135mm f2.5, Minolta MD 50mm f1.2, Minolta MD 250mm f5.6, Carl Zeiss Sonnar 180mm f2.8
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Drack
Joined: 27 Feb 2011
Posts: 735
Location: Lithuania
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| Posted: Fri Nov 25, 2011 6:22 am Post subject: Re: Golden spots on Fed-2? What is it? |
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Drack wrote:
Many Russian camera tops and other parts ( for ex. shutter speed dial, viewfinder rings and etc. ) where made out of cooper/brass and then painted with silver ( i believe silver powder ) paint. In your case I think the paint is simply coming off. I have seen several cameras on ebay, which where "chromed" in gold , however they only had their first lair of paint scratched off , and where polished.
I would suggest repainting the camera with silver powder paint.
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ForenSeil
Joined: 15 Apr 2011
Posts: 2726
Location: Kiel, Germany.
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| Posted: Fri Nov 25, 2011 3:37 pm Post subject: |
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ForenSeil wrote:
Interesting. It should be also possible to etch the aluminium selectivly away.
I will try some acids and lyes the next days 
_________________
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/
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Orio
Joined: 24 Feb 2007
Posts: 29545
Location: West Emilia
Expire: 2012-12-04
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| Posted: Fri Nov 25, 2011 4:03 pm Post subject: |
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Orio wrote:
yes looks like brass coated with aluminium layer.
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peterqd
Joined: 28 Feb 2007
Posts: 7448
Location: near High Wycombe, UK
Expire: 2014-01-04
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| Posted: Fri Nov 25, 2011 4:04 pm Post subject: |
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peterqd wrote:
Is it paint? It doesnt seem soft enough to be paint. I always thought it was electroplating.
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