Hi,
I picked up a FDn series Zoom lens 35-70mm (f/3.5-4.5)
to use with my AE-1.
I'm curious about the filth factor through the view finder.
When I compare the 50mm lens, it isn't as dirty/noise laden as this zoom lens.
I don't know if I have a bad lens or if this is just how it is. I already cleaned it properly.

Any response would be greatly appreciated.