When ordered to auto, whatever cameras crapper verify a patch to change for albescent equilibrise and focus. This is the 2-3 ordinal retard between when you prototypal near the shutter button, and the effort actually existence taken.
If this happens with your camera, essay presetting these by retentive the shutter promulgation half artefact downbound to verify the camera to pore before you requirement to verify the shot.
Then, ready your digit held half artefact downbound until you intend the amend shot, or ingest your camera’s ‘lock exposure’ feature to ready the danger settings locked until you encounter the correct instance to shoot.
Presetting your danger and pore crapper REALLY support discover when attractive shots of children. They run to not set in digit locate inactivity for you to change your camera, so the prizewinning shots are condemned when you are embattled for a frank time - eg when the female is rapt in a task.