Just how (un)important are cleaning marks?

[Joao]

Fungus

Fungus

Wow, Back Alley! Really interesting link!

Anyone know of any similar articles about lens haze or fungus? How bad does haze or fungus have to be before it'll show up on a photos?

Fungi on your lens ? Have a look here
http://verydirtylenstest.notlong.com
Interesting results IMHO
Regards
Joao

 

[cmedin]

I have a Summar and Summitar that both have their fair share of cleaning marks and probably a little haze; with C41 black/white film they perform wonderfully, but I tried (once) C41 color film and the contrast was extremely low. Reminds me I need to sell them, though I fear trying to ebay these things...

 

[sevo]

I won`t even allow cleaning marks on my car

My car has no cleaning marks, as it never gets cleaned...