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Lenses and scratches
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Feb 2, 2012, 03:45 #1
shuttertalk Shuttertalker *******
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I've always wondered how scratches on the front element of a lens affected image quality, and to a certain extent even dust and smudges. For example - ever looked at a second hand lens and debated whether to buy it because of noticeable scratches or marks on the glass?

Well this guy gets practical in testing the scenarios above out - from smudges to "dirt" and dust, to actually scratching his zoom lens, and for the final test - breaking the front element altogether. At each stage he takes photos and pixel peeps to see if the image quality is affected.

I won't ruin it for you but very interesting reading indeed...

http://kurtmunger.com/dirty_lens_articleid35.html







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Lenses and scratches - by shuttertalk - Feb 2, 2012, 03:45
Lenses and scratches - by Toad - Feb 2, 2012, 07:38

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