WordPress at a glance
filter is not described

wp_read_image_metadata_types filter-hook . WP 2.5.0

Filters the image types to check for exif data.

Usage

add_filter( 'wp_read_image_metadata_types', 'filter_function_name_3649' );
function filter_function_name_3649( $image_types ){
	// filter...

	return $image_types;
}
$image_types(array)
Image types to check for exif data.

Where the hook is called

wp_read_image_metadata()
wp-admin/includes/image.php 432
$exif_image_types = apply_filters( 'wp_read_image_metadata_types', array( IMAGETYPE_JPEG, IMAGETYPE_TIFF_II, IMAGETYPE_TIFF_MM ) );

Where the hook is used (in WP core)

Does not used.