Примеры использования Focusing distance на Английском языке и их переводы на Русский язык
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Closest focusing distance: 0.163 m.
It generally has a close minimum focusing distance.
Two focusing distances were used: one for the sphere and the other for the background.
Several photos are taken by gradually incrementing the focusing distance across the subject.
This is different from the closest focusing distance, which is instead(usually) measured from the camera's sensor to the subject.
Magnification is controlled by just two lens properties:the focal length and the focusing distance.
Larger apertures(smaller F-stop number)and closer focusing distances produce a shallower depth of field.
The example below was taken at 0.3X magnification using a compact camera at its closest focusing distance.
The focusing distance can also change the plane of sharpest focus along with tilt, and will be discussed later in this tutorial.
Also, unlike with low magnification photography,the depth of field remains symmetric about the focusing distance.
Also observe how the untilted focusing distance can have a significant impact on the focus plane angle.
The vertical distance"J" is easy to set because it is only determinedby the lens tilt, not focusing distance.
At its closest focusing distance, subjects sized 15x23 mm fill the frame with an impressive maximum reproduction ratio of 1:1.
It includes two 1280×800 pixel lenses operating with an aperture of f/2.0,with 30 cm focusing distance, and an 85° field of view.
It varies depending on camera type, aperture and focusing distance, although print size and viewing distance can also influence our perception of depth of field.
Inner focusing system enables you to shoot from 0.25 m(1.0 in.), the minimum focusing distance, at all focal length.
Note on accuracy:Lens makers inconsistently define the focusing distance; some use the sensor to subject distance, while others measure from the lens's front or center.
Similarly, a longer focal length(more zoom) achieves greater magnification,even if the minimum focusing distance remains the same.
The reason focusing can become so difficult is because the focusing distance and the amount of tilt do not independently control the focus plane's location.
PlayStation Camera has two 1280×800 pixel cameras with lenses having an f f/2.0,with a 30 cm focusing distance, and an 85° field of view.
With this lens, the brightness of the image on the film(image sensing device) will decrease by 1 stop andthe effective f-number will increase by 1 stop at the closest focusing distance.
This step is necessary even when using a tripod,since changing the focusing distance always causes misalignment more on this later.
For advanced stacks, you might want to connect your camera to a laptop(if supported) so thatyou can see an enlarged preview and control the focusing distance precisely.
The biggest problem is that pupil magnification changes depending on focusing distance, which introduces yet another formula.
All of these are often most apparent when using a non-macro lens at high magnification; by contrast,a true macro lens achieves optimal image quality near its minimum focusing distance.
Once the desired value of J has been determined and the corresponding tilt set,one can then independently use the focusing distance to set the angle of the focus plane.
The result is a photo with an extended depth of field that looks natural,because sharpness still gradually decreases farther from the focusing distance but just not by as much.
Minimum focus distance 300 mm focal length: 0.45 m(1.48 ft) from focal.
Minimum focus distance in macro mode m.
Compact cameras also often set their focus distance to distant objects or infinity.