When would you use external flash? -Do you need to meter the light if you use flash? -What does flash synchronization mean? -What does ETTL mean? -What will happen when you shoot faster than the camera sync speed? -Why do photographers bounce the flash and use a diffuser? – What is a slave? -What should you do if your image comes out too dark or too light?
An external flash provides you more control over the lighting and exposure of your subject in low light situations.
When utilizing flash, it is advised that you meter the light.
When you determine how much light the flash needs to emit when it’s acceptable, you areusing ETTL.
Before the flash can be fully caught by the sensor, your shutter will close.
To make it look like natural light.
When you snap a photo, a slave is a gadget that causes two additional external flashes to flash in time with your camera.
Go to Image > Adjustments > Brightness/Contrast to brighten a photo, or use this tool on an Adjustment Layer. Brightness/Contrast is a fantastic and simple option to use if the image is too dark overall.