The depth of field is the distance between the camera and the subject. Controlling the depth of field is the first thing you have to do when working with a camera and the first element that needs to be carefully considered. Thanks to the control you can shallower the depth of field of unnecessary objects or maximize the depth of field of the
Hyperfocal Distance, Depth of Field and the Circle of Confusion. The hyperfocal distance is the precise focus distance at which depth of field is maximised for a given aperture and focal length combination. It's much used in landscape photography to gain a full "through the scene" sense of sharpness.
To get more mathematical, if you're using a 50mm lens at f/1.8 and photographing something at 4 feet, your depth of field will be around 1.5 inches deep. But if you photograph that same subject from 10 feet, you will have a depth of field of just under 10 inches deep. Shot at 2ft with a 35mm lens at f/1.4. Shot at 9ft with a 35mm lens at f/1.4. First, the depth of field would extend to infinity. Second, everything beyond 1/2 the focus distance (everything beyond 5 feet in this case) would be sharp. According to the depth of field scale for the G2 lens, the actual depth of field is 3 feet to infinity for the 8mm lens set to f/8 and focused at 10 feet. The hyperfocal distance is 4.5 feet.
The Depth Of Field component applies a depth of field effect, which simulates the focus properties of a camera lens. In real life, a camera can only focus sharply on an object at a specific distance; objects nearer or farther from the camera are out of focus. The blurring gives a visual cue about an object's distance, and introduces Bokeh
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depth of field distance