The first time I exposed a set of 35mm images taken with my Olympus 35RC, that had been taken over a longer period of time (lets say atleast 12 hours between each image), I discovered a delightful light leak at the left hand thirds line.
These images are all mistakes. I was unaware of the leak, but here is why I could fix it easily but choose not to.
I am currently working on a set of diliberate images that feature a leak of light, but I still just shoot haplessly and hope for the best.
I don't shoot 35mm for sharpness and definition. I use it for creativity, quirkyness and grain. 35mm photography and the cameras and film we use all have their own unique personality and when combined thenresult is the birth child of all these unique units.
So if you discover your camera has a unique fault, leave it be and wnjoy the idiosyncratic results. You wont regret it.
Peace and love x