How does aperture priority work?
In Aperture Priority mode, you set your aperture and your camera automatically selects a shutter speed according to the brightness of the scene. When you increase your Exposure Compensation by +1 to make your images brighter, your camera will halve the shutter speed in order to let in twice as much light. For example, if you have chosen an aperture …
Why do cameras have low ISO?
By default, cameras tend to keep the ISO as low as possible in order to give the best image quality (i.e., the least amount of noise). For this reason, setting the Exposure Compensation will cause the camera to change the shutter speed or aperture before it decides to change the ISO.
What happens if you increase exposure compensation?
If you then increase your Exposure Compensation by +1, your camera will drop the shutter speed to 1/250th. This doubles the amount of light entering reaching the sensor. If instead, you were to set your Exposure Compensation to -1, your metering system will increase the shutter speed to 1/1000th.
What is manual mode on a camera?
In Manual mode, you choose the shutter speed, aperture, and ISO. Because there is no variable that the camera is setting automatically, changes to Exposure Compensation will not have any effect. However, there is an exception. Slightly confusingly, the Manual mode on most digital cameras still gives you the option to set the ISO to Auto.
Why does exposure compensation not have an effect?
Because there is no variable that the camera is setting automatically, changes to Exposure Compensation will not have any effect. However, there is an exception. Slightly confusingly, the Manual mode on most digital cameras still gives you the option to set the ISO to Auto.
What happens if you don’t check your histogram?
If you don’t also check your histogram, you might come home with photographs that are all underexposed, even though they looked fine on the LCD. By contrast, the histogram is much more consistent. When you understand it, a quick glance will often tell you if you need to use Exposure Compensation.
What is the shade of grey called?
This shade of grey is often called “middle grey” or “18% grey” and is used by all manufacturers as the basis of what makes a good exposure — trying to get as close as possible to what you see with your own eyes. Metering isn’t perfect, however.
This is an article about what is the iso in photography. If you have any questions, ask them in the comments below.