I have my Nikon EM for more than ten years. I took a lot good pictures with it. However, during a recent trip to the Yellowstone NP, I found a number of pictures showing under-exposed strips or bands (like light greyish bands) Most time these bands appear at the left and right end of the pictures. One thing drove me really craze is that such a band always appears on the 22rd frame in almost every film (in only one of 15 rolls this band appears on the 23rd frame) (I was using ISO 200 24 exposures films). Does anyone here know the reason for that? Your help is greatly appreciated.
An EM lover