I recently found an old 8-year-old film Nikon SLR that I used. There was a roll of film in it for 3-4 years. So I finished taking photos with the whole roll and when they were developed, most of them were totally white.
There was also a problem with autofocus. It always focused a few feet in front of the subject, so I manually focused all the photos. What do you think it was caused by? Should I check if the mirror is flipping or if the shutter is working or could it be due to some other problem?
I don't think there is any problem with the light meter or exposure meter since I also took a few photos in manual. I am a photography enthusiast and usually use a Sony dSLR.