Sunshine Photo Cart: Filter image name to show file name

sunshine-filter-image-name.php

// Add this to your theme's functions.php file
// Or use this plugin https://wordpress.org/plugins/my-custom-functions/
add_filter( 'sunshine_image_name', 'my_sunshine_image_name', 10, 2 );
function my_sunshine_image_name( $name, $image ) {
    return basename( get_attached_file( $image->ID ) );
}