Aero Technika with Biogon 4.5/75 mm Lens, c. 1968

Linhof, Munich. Aero Technika 4 x 5 inch camera, no. 304, for oblique aerial photography, removable front panel with slot for 12 x 12 cm filters, mounted on a 4 x 5 inch Linhof interchangeable lens board is the Zeiss Biogon 4.5/75 mm no. 2767524 in Compur, with original Zeiss lens cap. Glass clean inside under point light, shutter and aperture function correctly, with focusing screen back. – Accessories: Sports frame viewfinder, universal viewfinder 75/90 to 360 mm, no. 22334, with Biogon 75 mm attachment and 56 x 72 mm metal mask, 4 glass filters 12 x 12 cm in light yellow, yellow, orange, and red, 6 double cassettes 4 x 5 inch Fidelity or Riteway, Cine Rollex 56 x 72 mm, changing bag, and original case (carrying handle loose). – Well-preserved and in working order. – Note: The absence of focusing allows the camera to achieve backlash-free, plane-parallel alignment to infinity with aerial camera quality. To achieve close-up focusing of a few meters (e.g., for art reproductions), only sheet film holders offer the option of using a thin metal plate (up to 1.5 mm thick) that is inserted in front of the slightly modified film holder. This allows for a slightly closer focusing distance, with the advantage of maintaining the exceptional plane parallelism.

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)