Lenses and scratches - Printable Version
+- DSLR Photography Forum (
https://www.shuttertalk.com/forums)
+-- Forum: Digital Photography Forum (
https://www.shuttertalk.com/forums/forum-4.html)
+--- Forum: Main Photography Discussion (
https://www.shuttertalk.com/forums/forum-17.html)
+--- Thread: Lenses and scratches (
/thread-11985.html)
Lenses and scratches -
shuttertalk - Feb 2, 2012
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
Lenses and scratches -
Toad - Feb 2, 2012
Interesting and completely in keeping with what I have always suspected...
The same cannot be said about dust or scratches on sensors however, which are completely visible even to an untrained eye.