Designed to imitate natural daylight, the 'Daylight' bulb reduces eye strain and allows for improved colour matching when working in the studio. These energy saving bulbs also require 75 per cent less energy than standard bulbs making them better for the environment. A 20W bulb is equivalent to a 100W Tungsten bulb while the 10W bulb is equivalent to a 60W Tungsten bulb. Daylight bulbs are available in both bayonet cap and screw cap fixings.