鏡頭資料》 http://m42.artlimited.net/lens_detail.php?lid=146 對焦距離:0.25m - 無窮遠 光圈:f2.8 – f22 口徑:55mm 重量:240g 鏡片結構:七片七群 視角:73度 附註:Introduced as the Meyer Orestegon it was made with bright flutings in auto form, with normal coating. The following version with black fluting was offered in both auto and electric forms, and so were the subsequent multi-coated versions.