An extension tubes is a tool used in macro photography that attaches to the face of the camera at one and.the purpose of the extension tube is to move the end of the camera's lens away from the digital sensor on the face of the camera.not only does the extension tube bring the subject closer to the camera's lens,but it also requires for a longer exposure time because it takes longer for the light from the scene to reach the face of the negative.
A non-electronic extension tube will prevent the autofocus feature from working.as a result.the photographer will have to manually adjust the aperture to propely focus the lens.however,a photographer can ensure that his autofocus isn't disabled by purchasing a more upscale extension tube that comes with points of electrical constact that an extension tube has,the more it will enable your camera's electrical funcations to work properly.
Extension tubes are especially helpful in macro photography because they allow the photographer to take close up shots of smalller,highly detailed subjects.
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