dirty

I took and edited a picture. It was for embbeding it in a forum like this one. For that I uploaded it on Facebook. Unfortunately it altered the image giving it a dirty appearance: I then uploaded it to Google Drive to see if it looked better. It did: Do you see the difference? So my...

Hello, I bought an old nikon FG-20 play around with, and when I look through the viewfinder, i see black specs of i guess dirt or dust. Unfortunatly it seems to be on the other side of the viewfinder inside the camera... Does anyone have experience in cleaning the insides of these cameras?