Sonnar 1.5/12.5 cm T Lens, 1942 onwards

Carl Zeiss, Jena. No. 2752407, iris diaphragm up to 22, Ø of the front element (optics only) 81 mm, rear element Ø (optics only) 60 mm, optics good under point light, a 0.5 mm area with traces of cement (insignificant in practice) around the edge of the rear element, overall excellent condition. - Note: Distance between optics and focusing screen at infinity 52.1 mm (the high lens mount of the rear lens has a possible reserve of an additional 5.6 mm), with a 60 mm wide format without vignetting, high contrast and strong resolution at open aperture, good sharpness at close range, chromatic aberrations quite low for this lens speed. Originally intended for aerial cameras and the nightime flash photography of military targets, this is still a good user lens for formats of up to 6 x 9 cm for light or collodion photography.

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)