Your aperture will need to be as wide as possible, which means setting it to the widest setting, which is the lowest f-number.
Your aperture will need to be as wide as possible, which means setting it to the widest setting, which is the lowest f-number. We usually recommend f/2.8 or lower. DSLRs and mirrorless cameras use a wheel on the camera body to set the aperture, but manual lenses and some made for Sony mirrorless cameras have an aperture ring on the lens itself.