适马11-22mm f/4.5-5.6 全画幅镜头专利。专利公开号 2015-203734，公开日期2015.11.16，申请日期2014.04.11。实例1:变焦比1.88；焦距11.33 – 15.33 – 21.30mm；光圈4.50 – 5.00 – 5.86；像高21.63 – 21.63 – 21.63mm；全画角126.85° – 108.80° – 87.93°；镜头全长163.42 – 156.24 – 156.59mm。消息连接：http://www.camerabeta.com/rumor/sigma/sigma-art-11-22mm-f4-5-5-6-dg-hsm-fld-lens-patent/1394
