|Baldafix 6×9 folder|
image by Just Plain Curt (Image rights)
The Baldafix folding camera was introduced in 1950 by Balda, and in its standard mode provided eight exposures of 6×9 cm per roll of 120 film. However the camera was supplied with a mask for its film gate which allowed the photographer to switch to making sixteen 6×4.5 cm exposures instead. Two red windows were provided on the rear of the camera for the two formats. The camera is often seen with an Enna 10.5 cm Ennar lens in a Pronto shutter; and with an enclosed viewfinder offering a switchable mask for 6×4.5 images. Some (presumably earlier) examples have an open-frame viewfinder including a smaller rectangle for the secondary film format.