Focus distance

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Focal length focus distance

If you have a fixed focal length lens, you cannot change the focal length. However, if you have a variable focal length lens, you can adjust the focal length by zooming in or out. Some cameras also have interchangeable lenses, allowing you to switch between different focal lengths.

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Minimumfocus distance

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The focus point is the specific point in the image that the lens is focused on. If the focus point is not aligned with the subject or area of interest, the image may appear blurry or out of focus. It is important to adjust the focus point to ensure sharpness in the desired area.

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Focal length

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focallength是什么

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A fixed focal length lens, also known as a prime lens, has a fixed focal length and cannot zoom in or out. A variable focal length lens, also known as a zoom lens, has a range of focal lengths that can be adjusted by the user.

Focal length is the distance between the center of a lens and its focus point, measured in millimeters. It determines the magnification and angle of view of the lens.

Focal length affects the image in two main ways: first, it determines how much of the scene will be captured in the frame (angle of view) and second, it affects the magnification of the image. A longer focal length will result in a narrower angle of view and a more magnified image.