If you’re shooting a lot under tungsten or strip lights flash is useful to fill-in, or even to provide additional light, but the discrepancy in color temperatures can be a problem. Do you shoot with white balance set for tungsten/fluorescent or flash Ponder the question no longer. Set the white balance for the ambient light and gel your flashes to match – the process is cheap and straightforward. All good camera stores will sell sheets of lighting gels designed for studio flash. Major brands are Lee and Rosco. Simply buy the appropriate gel and cut sections off to fit to the front of the Speedlite. Secure with tape, elastic bands or if you are feeling smart, fix velcro on camera and gels.
You can buy on the link below.
Contributed by: Martin Allred