Flash and its use in Photography
Flash, why use it in photography? Simple answer is to light the subject. This works fine for something that is close. Can you really light up a subject on a sports field when you are in the rafters? Of course the answer is no.
What is it?
Flash is a portable light source that produces a burst of light to illuminate a subject. This can be a fixed item that can be used on or off the camera.
The fixed camera flash is a pop up unit that is located on the top of the camera. Although diffusion covers can be added to this, the light produced is reasonably direct. This does not produce a flattering image. Light from this is not easily controlled.
This is a very versatile item and when used off camera can produce some superb images. Various accessories can be used to diffuse or bend the light. Light output is better controlled and harsh light is avoided.
Flash is used to light the subject. This can be similar to studio lights with main, fill and hair light. It could be as a fill in light with the subject outside in bright sunlight and there face is in darkness. A little fill in light will bring out the details and you will be able to see them. Flash depending on the output and shutter speed will also change what detail you see in the background.
In my opinion portable flash(s) is the way to go. The flash can be used in an automatic setting where the flash syncs with the camera control. The theory is that for the settings of the camera the flash output will be right.
However if your just starting to use flash, start in manual settings. You may be pleasantly surprised at the results.
To set up your flash(s) correctly so you don’t over or under underexpose, you will need a light meter. I use the Sekonic L478DR that works with pocket wizards. It will also work on a time delay for the flash if you don’t have pocket wizards. See Sekonic L478 Blog For further details. You can also visit Sekonic L478