给消费者更多的选择─—试议１３５单反相机的卡口与卡座张治平众所周知，由于各照相机生产厂家各自为政，镜头接座形式各不相同，造成了不能相互通用的局面，这给生产厂家的销售和使用者都带来了很大的不便。而国外一些专业镜头生产厂家，为了与照相机厂家争夺市场，在“... To consumers more choices ─ ─ 135 trial SLR camera bayonet and deck Zhang Zhiping It is well known that due to the camera manufacturers themselves, the lens mount different forms, resulting in a common situation can not be reached, which gives the production Manufacturers of sales and users have brought great inconvenience. Some foreign professional lens manufacturers, in order to compete with the camera manufacturers for the market, in the "...