Polyfoto Studio Camera for 48 Photos on a 13 x 18 cm Plate, c. 1

S/A Polyfoto, Copenhagen. Polyfoto No. 39, for 48 exposures 2 x 2 cm on a 13 x 18 cm plate or sheet film. Dimensions: 66 x 67 x 154 cm. Mahogany construction, a mobile base unit with storage compartments; mounted atop is a swiveling and tilting assembly consisting of two columns that allow the camera (lens center) to be adjusted in height from 97 to 125 cm. The lens (approx. 5 cm) is fixed in a stationary position; adjacent to it rotates a gear wheel with an aperture that simultaneously opens the exposure window and, as the wheel turns, shifts the 13 x 18 cm plate to the next position, ensuring no double exposures occur. Instead of a standard dark slide 39 x 41 cm, the camera back is fitted with a Plexiglas panel, allowing museum visitors to observe the fascinating mechanical action during the 48-shot sequence. Exposure time starts at approx. 1/10 second and can be controlled by the speed of cranking. A truly unique exhibit with great demonstration appeal. If desired, the Plexiglas panel can be replaced with a light-tight cover, enabling visitors to photograph themselves on reversal paper (which can then be developed on-site for them to take home). – In addition: 2 original negatives in sheet and plate and a 24 x 30 cm enlarging.

布雷克拍品等级是为了方便竞买人判断拍卖品的成色而设置的。布雷克等级用1到6级来标注外观和功能的成色，(从非常好到非常差)。 在目录图册里用括号里的2个数字来表示，前一个数字表示外观成色的级别，后一个数字表示功能成色的级别。如(3/2)表示外观成色是3(满意的)，功能成色2(好)。 成色 定义参照下列标准： 1 - 非常好 (未使用过，没有使用痕迹) 2 - 好 (新，极少的使用痕迹) 3 - 满意的 (普通的使用痕迹) 4 - 及格的 (明显的使用痕迹，某个非主要部件是后配的) 5 - 有缺陷的 (极明显的使用痕迹, 某个主要部件是后配的，功能上有缺陷，需要修理) 6 - 非常差 (严重破损, 缺少重要部件)