Theory Notes
Flashes: "A flash is a device used in photography that produces an instantaneous flash of artificial light (typically around 1/1000 to 1/200 of a second) at a color temperature of about 5500 K to help illuminate a scene."
Usually flashes are used to illuminate a picture, or to capture moving objects such as this running water.
This running water was captured by using a flash.
There are definatly different varities of flash such as electronic, flash-bulbs, and flammable powders.
This is an example of a flash that has to be added to the camera.
Usually flashes are used indoors, seeing as the photographer will naturally not have the same light as if they were shooting outside.
There are different techniques that can be used to use the flashes inside. For example a lot of photographers will use something relflexif, such as a flash umbrella. This method is called bounce flash, which gives a much more natural type of flash, than if just a flash pointing straight into somebody's face.
A lot of time people with digital camera's will have some problems with the flash. This is because the built in flash is not that strong, and it can only be used for certain distances. If the flash doesn't work out, the pictures might turn into some sort of grainy photo.
Light Meter
This is a device which is used to measure the amount of light.
A lot of photographers use this, and will use it with a computer to be able to determine which shutter speed would be best to use, or which f-number should be used.
This is an example of what a light meter looks like:
There are also different ways to calculate light with equations such as these:
For reflected light meters -
For incident light meters -
These are just some equations.
No comments:
Post a Comment