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大型国产座机是照相馆时代的照相器材。因为尺寸巨大,必须固定在三脚架上使用,所以称之为“座机”。旧时照相馆使用的座机都是国产的,机身为全木质外框和金属结构,体型庞大,加底座最高可达一米八左右,重量在一百五六十斤左右,非常地沉。相机主体由镜头座、机身、暗盒三部分组成,这三者是可分离的。拍摄照片时,需用一块大黑布罩住整个机背,照相师傅钻进黑布内从取景器中察看人物倒影,进行拍摄。这种老式的大型座机一直使用到20世纪80年代初期,才被逐步被120、135等轻便型胶片相机所替代,如今它已经成为老古董被收藏起来。
Large-scale domestic land-based camera studio photo equipment. Because of its size, must be fixed on the tripod to use, so called “landline ”. The old camera used in the landline are made in China, the fuselage of all-wood frame and metal structure, body size, plus up to about one meter eighty-eight base, weighing about 156 pounds, very heavy. The main camera by the lens holder, the fuselage, cassette three parts, the three are separable. Take a photo, you need to cover the entire back with a large black cloth, photographer drill into the black cloth from the viewfinder to see the reflection of the characters, the shooting. This old, large landline phone was used until the early 1980s when it was gradually replaced by lightweight film cameras such as the 120, 135 and now it has become a collection of old antiques.