Traditional Culture Encyclopedia - Photography and portraiture - Why does portrait photography use a large aperture?

Why does portrait photography use a large aperture?

Portrait photography does not need a large aperture, but if you want to highlight the subject, get a shallow depth of field and achieve the effect of blurring the background, you need to use a large aperture. Sometimes, if you don't want to ignore the background or get better definition, you need to reduce the aperture, because most lenses are not at their best when the aperture is the largest.