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Post by John Farrell on May 10, 2016 23:58:53 GMT -5
This lens is in good condition, for its age, but one of the elements has a little fungus. I decided to open it, and clean the lens elements. Lens cleaning paper, window cleaner, airbed pump (for blowing out dust). I started by removing the front element - loosening the securing ring with the slotted lens spanner, then turning it out using a toothpick in the slots, to avoid scratches. This exposed no fastenings, so the next step was to unscrew the whole lens front, gripping it with a rubber tool (the odd figure 8 in the picture below, designed to loosen jar lids). You can see the fungus on the uppermost exposed lens element, and above that on the table, the front element. I cleaned the front element, and refitted it, then removed the dirty element, and cleaned that. To finish up, I removed and cleaned the rear element.
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Post by olddocfox on May 11, 2016 9:56:20 GMT -5
Dear John,
This seems like a brave effort! Did it measurably improve the len's performance? Can you post any before/after comparison images?
Regards,
George
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Post by John Farrell on May 11, 2016 18:25:54 GMT -5
George - I didn't take any before photos, unfortunately. I have a film in a K1000, so I might do some "after" shots.
John
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Post by John Farrell on May 13, 2016 18:26:19 GMT -5
I fitted the lens to my K1000, and finished the last 3 shots on a roll of outdated Fiji Superia that was loaded. I should have the processed negatives back next week.
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Post by John Farrell on May 16, 2016 20:05:00 GMT -5
Taken on expired Fuji Superia 200 (expiry around 2010) 1/30 second at f5.6. Looking up Churchill St. to Bay View Road.
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