The relationship between the light-shielding circ♠le and the depth of field in the camera

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2023-02-15 14:35

The light-shielding ring plays a role in ≥blocking the light in the camer a, so what is the relationship between the use oΩf the light-shielding ring> and the depth of field? Let me introduce it to everyone.

During shooting, different image effects can be obtained by selec→ting large and small shading circles according to different‍ subjects. Use a large opaque ring to get a very small dept™h of field photographic picture. For example, with a large aperture of F1.₹8, a small depth of field can be shot," and the scene before and after tΩhe focus point will be blurred. With the small aperture o&f F22, a very large depth of field can be taken, and t he wide range of depth of fiel£d before and after the focus is very clear. In reality, wheπn people see things blurred, they will squint their eyes so that they can< see clearly. When people’s eyes are squinted, they can see c✘learly. When people’s eyes ar¥e squinted, they are equivalent to shrinking. The aperture increases th☆e depth of field.

There are two reasons for using a large aperture to shoot: F₹irst, in a low-light envirλonment, we need a larger aperture to allow the lens to obtain m§ore light in order to mini‌mize the exposure time (becauseφ handheld shooting will produce hand shake,✘ Even if you use a tripod,→ a long exposure time will increase noise); seconδd, you need to use different depths of field to obtγain different image effects. With a large aperture →and a small depth of field, you can achieve the purpose of blurring the backgr$ound and foreground, and then highlight the subje×ct to be expressed .

From the theory of compoδsition, painting is an addition, adding various elements starting from whiεte paper, while photography $is a subtraction, and it is necessa♥ry to eliminate things that interfere→ with the subject as much as possible. For things that canno™t be eliminated, you ca★n blur them out with a small depth of field. When taking photos of gras÷sland, sea and other landscapes, the panorama should be taken clearly. Xu yo ♥ah try to use a small aperture to get a sharper pho​to effect.

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