Da Yi
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Da Yi 6x17 roll film back image by Richard Downer (Image rights) |
The name Da Yi[1] appears on roll film holders, especially panoramic ones for sizes 6x12 and 6x17cm on 120 film, made by the Shen Hao company. Some of these holders allow more than one format, with adjustable masks, and several red windows, with instructions on what frame numbers to use.