I just bought a Pentax-M 50mm f1.4 from ebay.
Arrived after about 2 weeks.
Seller describes glass as 'Clean'.
I look into the lens under bright light and I see what looks like tons of dust/fungus? trapped inside it.
Small dots, big dots, fibrous strands inside...
How does one tell if it is dust or fungus?
I need some help, if possible can do a quick meetup and help me check.