PRECAUTIONS WHEN USING THE LENS WITH A FLASH
Built-in Flash
The built-in flash can not be used when the distance is less than 0.7m. When the flash is used within 0.7m, that causes incorrect exposure control and vignetting in the picture corners.
•The built-in flash may be blocked by the lens hood. Always make sure to remove the lens hood before using the built-in flash.
