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Tonight's Challenge: Save a Lens!


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#1 480sparky

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Posted 27 August 2015 - 09:15 PM

Stopped by the local brick-n-mortar toy store today just to see what was up.  They tossed me this:

2015-08-27%2019.51.13.jpg


Said someone left it (Nikkor 200/4 Ai) under the seat of their truck for 3 years.  Brought it in to see if it was worth fixing, and Nikon said how much it would be.  He said, "Forget it!" and wanted to toss it.  So they kept it and waited for me to darken their door.

What the heck, I thought!  It's a free lens!  It's at least worth [i]trying[/i] to clean it up.  These old lenses aren't that difficult to disassemble.  So tonight, after supper, I cracked out the tools.  Other than the dust on the front element, there was a lot of fungus on the rear of the second element.

2015-08-27%2019.53.09.jpg


A couple rounds of scrubbing cleaned that up nicely!

2015-08-27%2020.01.31.jpg



But more trouble lurked further in.

2015-08-27%2020.10.17.jpg

2015-08-27%2020.15.52.jpg



But still within reach of going in through where the aperture blades are.  Several q-tips and some cleaning fluid later;

2015-08-27%2020.33.10.jpg



Reassemble, and I get a rather nice 200mm Ai out of the deal.

2015-08-27%2020.50.19.jpg

Yes, there's still some fungus further in, but not on the glass.  And there is a slight amount between the front two elements.  But heck.  It's free!

I'll need to get a spanner wrench to take off the retaining ring between the front two elements, but that can easily wait for now.  Now to take 'er out and shoot 'er (as opposed to it's fate as of this morning, and that was landfill fodder!)



I love saving old glass!
 


Don't mind me..... I'm just out roaming around between Zone II and Zone IX.
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#2 Gary Worrall

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Posted 27 August 2015 - 09:24 PM

Great work there

Cant wait to see the images

........Gary


- I have a photographic memory but never got it developed -


#3 Art

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Posted 27 August 2015 - 10:01 PM

Fungus is a funny thing....you have to get it ALL......

WELL DONE, BUT I WOULDNT PUT THAT ON MY CAMERA.....

 

not unless you are sure you got all the fungus.


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#4 Dennis

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Posted 27 August 2015 - 10:40 PM

Nice work.

Thanks, Dennis.

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#5 Wheatsack

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Posted 28 August 2015 - 03:03 PM

Great work Sparky.

Peter................................................ f8....and be there....


#6 Keith M

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Posted 29 August 2015 - 11:46 PM

nice job


"First we have to make you pretty"

 

Pixels are like beans, it doesn't matter how many you put in the pot, it's how well you can cook that counts.


#7 Sailjunkie

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Posted 02 September 2015 - 04:52 PM

Fungus is a funny thing....you have to get it ALL......
WELL DONE, BUT I WOULDNT PUT THAT ON MY CAMERA.....
 
not unless you are sure you got all the fungus.


Well done, Sparky, but I'm with Art on this.
Mark

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#8 480sparky

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Posted 02 September 2015 - 05:02 PM

To all the nay-sayers:

 

Do you always disassemble your lenses and check them for fungus each time you use them?  :rolleyes:


Don't mind me..... I'm just out roaming around between Zone II and Zone IX.
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#9 james23p

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    Right Jazz! :D

Posted 02 September 2015 - 06:12 PM

Nicely done but fungus bothers me since I work in a lab I see how it can grow over night. No I do not check mine to be honest every day but I do check my lens fairly often and I do expose my older lens to sunlight regularly especially the ones I do not sue often, that said I also do not tempt fate when I know something is wrong. for example I do not wear a mask in every patients room but once they test positive for something we do.

 

But your skills are far beyond mine and that is a nice job.

 

Jim


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