READ AND WRITE: Fill flash is a photography technique that apples more light to the subject if they are underexposed. There are different techniques depending on the style of photography you are doing whether that be portrait, landscape, or macro photography. For portrait, focus on keeping it subtle, placing the subject in an angling position of the sun, and/or make use of a reflector. For landscape, use the fill flash to sparkle the foreground, use lighting gels to adjust the color temperatures, and focus on the natural look. For macro, don’t use the built in camera flash, adjust natural lighting with the flash, and ponder over the Flash Bracket. You have two main options for a fill flash, the built in camera flash and a flash gun. Both have its own purpose and right situations on when to use them.