Finding a light leak in an old bellows camera was a real puzzle

I had this vintage folding camera that kept giving foggy pictures. Back in the day, we didn't have fancy digital testers, so I used a flashlight in a dark room. It turned out the bellows had a tiny pinhole I almost missed! I spotted it by carefully moving the light around until the leak showed up. Now we have UV lights, but that simple trick feels like real craftsmanship.