Viewfinder mask for composing panoramic images on 35mm film in the Mamiya RB67 medium format camera. (The so-called "sprocket panorama").

The mask excludes the sprocket holes to make it easier to keep the critical part of the composition in frame. Your actual image will extend over the sprocket holes so will be a little taller than what you see through the mask.

Lay the mask directly on the ground glass of the waist level finder and compose away!

Consider printing more than one as they are easy to lose.

Personal use only. No commercial use permitted.