I have recently been having issues with banding on my 4x5 negatives. I use an Intrepid Camera and develop my film with a 20th Century film holder which I recently acquired (in a Paterson tank).
Initially I thought that the marks came from the 20th century film holder because they seem to be where the film is held by the plastic arms. On closer inspection, the marks only occur on outdoors photography ie in full light. I don't seem to get the markings when taking indoor portraits and still life shots. They also seem to only occur on landscape orientation and not when the camera is in vertical/portrait mode.
Any ideas?
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