https://www.fdphotostudio.com/become-better-photographer-using-a-light-meter-with-david-bergman/?no_create_html_cache=1 Although many professional photographers prefer to 'eye-ball' their aperture instead of using a light meter, some of the set environments - like shooting out in the bright sun light, can skew even a seasoned photographer's sight, making this little wonder of technology a necessity for every photographer.