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hal-1.jpg

hal-1.jpg


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Guest 12-Jan-2014 13:07
I have a Nikon 50mm f1.4 that I bought on-line. The live fungus had been cleaned out, but it had eaten away the glass. Despite my worst efforts, I was unable to detect any effect at all on imaging, even into the sun, so I kept it !
Lasse 01-Nov-2013 18:52
Blur that fingerprint. NSA might be lurking around here ;)
Lensrentals01-Nov-2013 18:04
I think that the story behind these is more interesting than
the pictures.

I believe (until proven otherwise) that these were the first images of lens fungus ever posted to the open Internet. They were shot sometime in 1995 or 1996 and posted soon thereafter. As one would expect for that dates, they were shot onto film and scanned with an early flatbed scanner.

The original reason for making these pictures was to prove the seller of the lens that there was a problem with it. I was helping a friend of mine to buy the lens. I think all this was done electronically over the internet which was still relatively uncommon in 1996.

Since I already had the pictures scanned, I put together a web page to inform others of the phenomenon of lens fungus. You can see some snapshots of it from the Internet Archive. They have first captured it in 1998: https://web.archive.org/web/19980213040607http://www.chem.helsinki.fi/~toomas/photo/fungus/ By that time the site had already been moved from its original location at www.qtp.ufl.edu/~toomas/photo/fungus which, unfortunately, has not been preserved in the Archive.

At present time the images are hosted athttp://photo.toomastamm.eu/fungus .

How the images were captured:

The infected lens was mounted on a camera on tabletop tripod, angled up. A white piece of paper was placed on the table behind the viewfinder and lighted by a household lamp (60W). The picture-taking camera was equipped with Canon EF 28-105mm lens at 105mm, f/8.0 and Nikon 6T (3 diopter) close-up lens and mounted on another tripod just next to the table. Autofocus was not able to find the fungus, so manual focus was used. Exposure was bracketed +/- 2 stops from the meter reading, but the final prints (Kodak Gold 400 film) were almost indistinguishable. Prints
were scanned in a 600dpi flatbed scanner, cropped and edited with Corel PhotoPaint and xv.

Unfortunately I did not have a third camera to take a picture of the picture-taking rig, which already included the only two cameras we had at hand :-)
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