I did not touch my lens for two days. Just now, i took it out for some regular cleaning, i saw a thing white line about 2mm thick in my Nokton 40mm. I tried to clean the surface of the lens but it remains in the lens. It looks like a fine piece of hair.
May i enquiry if it is fungus or anything potentially harmful to my lens?
Will it affect the quality of my pictures?
Will it affect future buyers confidence?