http://digital-photography-school.com/aperture/
According to the author, why is it so important to master aperture?
It is important to master aperture because it changes your ability of creativeness on the camera.
What happens each time you move from an f/stop from one number to the next smaller number?
When you move from one f/stop to a smaller one, it halves the size of the lens opening.
What happens each time your move from one shutter speed setting to the next smaller shutter speed setting?
When you move from one shutter speed to a smaller one, it increases the time that the shutter is open.
How is aperture related to depth of field?
The aperture is what changes the depth of field.
According to the author, what is the "best way to get your head around aperture"?
The best way is to get your camera and experiment.
What size aperture is typical used in landscape photography? in portrait photography? in macro photography? Why, why and why?
In landscape, smaller, because you want the entire area, including the horizon, in focus. In portrait you want a large aperture so that only the subject is in focus. In macro photography, you want a larger aperture so that the subject captures all the attention.
Moving a smaller f/stop doubles the size of the opening. A smaller shutter speed will cut the amount of light in half. (You have these reversed). 93.
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