全幅是摄影人对“全画幅”的昵称。“全画幅”是针对传统135胶卷尺寸来说的。传统的照相机胶卷尺寸为35mm,35mm为胶卷的宽度(包括齿孔部分),35mm胶卷的感光面积为36x24mm。若数码相机的CCD或CMOS图像传感器尺寸和135胶卷的尺寸相同36x24mm,称之为“全画幅”。除此之外,目前市面上常见的数码相机图像传感器尺寸有APS规格、4/3规格、1.5英寸、1英寸、2/3英寸 Full width is the photographer’s “full frame” nickname. “Full Frame ” is for the traditional 135 film size. The conventional camera film size is 35 mm, 35 mm is the film width (including the perforation portion), and 35 mm film is 36x24 mm. If the digital camera’s CCD or CMOS image sensor size and 135 film the same size 36x24mm, called “full frame ”. In addition, the currently available digital camera image sensor size APS specifications, 4/3 specifications, 1.5 inches, 1 inch, 2/3 inches