What lens should be used to blur the background when shooting the whole portrait at close range? example

Hello! In order to get a "complete portrait with blurred background", we must use the shallowest depth of field to shoot. Generally speaking, the depth of field is the "acceptable clear area" that the adjusted focus extends back and forth. The depth of field is the depth and clear range of the scene when shooting. If the aperture is large, it will be shallow. The lens should be a lens with a focal length of about 85 mm, such as 1, and the reference price of Canon EF 85mm f/ 1.2 L II USM (big eyes) with high-end red circle lens: 14500 yuan. 2, entry-level non-red circle fixed-focus lens Canon EF 85mm f/ 1.8 USM

Reference price: 2980 yuan. At any aperture position of the camera, the longer the focal length (using the telephoto end of the lens, commonly known as "enlarger lens") and the shallower the depth of field, the easier it is to take "photos with blurred background and clear foreground". Therefore, large aperture and long focal length are commonly used techniques to blur the background. If the consumer digital camera has full manual function, you can set the maximum aperture yourself and shoot through the enlarger lens, so it is easier to get "photos with clear people and blurred background". If it is a fully automatic model, it can only be shot by "zooming in".