Hi all,
Does anyone remember this quite rude test concerning the impact of scratches and destruction on the front lens with respect to the quality of photos taken with the gear?
I googled for quite some time and can just find that one
but not the one with that lovely brutal humor 
I just remember that it was a kind of spin-off in a discussion about sense or non-sense of using an UV filter as a front-lens protection…
Thanks in advance for pointing me somewgere and have a good time 
Possibly this one?
That one is also very nice, thanks for the link 
but it’s not the one I’m looking for.
I remember that it was a kind of blog post, perhaps by a guy from the UK - not sure about that. He started with a small scratch and ended up with a badly battered front element. With every step of destruction he did a shot to show the impact. It was quite impressive
There was this posting on the topic by Kurt Munger: http://kurtmunger.com/dirty_lens_articleid35.html ,
but currently that link doesn’t work for me anymore.
Edit: One interesting result of his tests was, by the way, that fully removing a damaged front element actually turned that lens into a macro lens.
Yes exactly that one Thanks so much 
unfortunately it’s no longer online, but I found it being accessible in the archive
https://web.archive.org/web/20240321045813/http://kurtmunger.com/dirty_lens_articleid35.html