Sony BRAVIA XR A90K 42" HDR 4K UHD OLED TV - Manual (Page 44)

When the product cannot focus automatically, the focus indicator flashes and the beep does not sound. Either recompose the
shot or change the focus setting.
Focusing may be difficult in the following situations:
It is dark and the subject is distant.
The contrast of the subject is poor.
The subject is seen through glass.
The subject is moving quickly.
There is reflective light or shiny surfaces.
There is a flashing light.
The subject is backlit.
The subjects in the focus area have different focal distances.
Related Topic
The advantages of automatic shooting
About Scene Recognition
Shooting images underwater
Playing back still images
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