Extension Tubes

An Extension Tube is a tool used in macro photography that attaches to the face of the camera at one end and to the lens at the other end. 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 theaperture to properly 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 contact. The more points of electrical contact that an extension tube has, the more it will enable your camera’s electrical functions to work properly.

Extension tubes are especially helpful in macro photography because they allow the photographer to take close-up shots of smaller, highly detailed subjects.