Variations of the Zeiss S-Biogon 5.6/40 mm

In addition to the high-performance S-Biogon lens for reproduction ratios around 1:20, manufactured by Zeiss Oberkochen, there were also Carl Zeiss Jena versions as the Dokumar, which were distributed in the Comecon countries. 1) Zeiss, Oberkochen. S-Biogon 5.6/40 mm no. 6678518 (note: f=40.3), glass clean under point light. No need to stop down, as it is perfect wide open. For enlargements in poster format 50 x 60 cm, there is nothing better! With separate color correction filter. (3/2-) ÿ And: 2ÿ5) Carl Zeiss Jena. Dokumar 5/35 mm no. 1539, Dokumar 5.6/38 mm no. 7044012, Dokumar 5.6/47 mm no. 1359 and Dokumar 8/38 mm no. 8449028. Under point light, they show some signs of wear, but overall in good condition. Very rare to find! (3-/3)

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)