Proper lighting is vital for capturing an image with the perfect exposure. It can supplement any dark areas of the image and helps bring out the details. Lighting does play a role in enhancing the nature of the subject whether placed in indoors or outdoors. Photographers rely on external flash for lighting the image perfectly as it offers them better creative control. Compared to a built-in flash found in most cameras, an external flash can be placed anywhere at any position and is triggered wirelessly in accord with the camera shutter.
When you put it side by side to a direct lighting setup, the use of external flash has numerous benefits. It can provide a strong source of illumination that falls equally on all the key areas of the image. This lets the photographer makes adjustments to the angle and positioning of the flashes to obtain certain creating lighting that enhances the subject of the image. Besides, there are several other advantages of using external flash especially in the fields of product and portrait photography.
External flash has greater directionality and this means that the light can be bounced up to different angles. This has immense benefits in the area of product photography as bounced light from the flash becomes softer and evener. It can light the surface well and any imperfections can be corrected by professional picture editing. The direct light coming from a built-in flash can ruin an image as it makes the subjects appear flat. External flashes are easy to bounce off ceilings or reflective materials, thus giving a softer appearance to the image.
Prevents Red-Eye Effect
Another major benefit of using an external flash is that it can prevent red eyes if photographing human or animal subjects. The red-eye effect is caused by the reflection of the flashlight from the retina of the eyes and into the camera. A built-in flash is sure to cause red-eye even it has various corrective mechanisms such as a red-eye reduction lamp or the use of instant pre-flashes. External flashes are placed not directly at the subject, which prevents the light from bouncing back at the lens.
More Illumination Range
An external flash has a greater throw of light that gives equal illumination across a wider area than a built-in flash. This is a helpful feature when using a simple lighting setup for illumination the subject. External flashes come with their own power packs of batteries, thus saving the camera battery during image capture. Besides, it can quickly take a succession of shots using an external flash due to its lower recycle time.