Lens Extension Tube

Lens extension tubes are accessories used in photography to increase the distance between the camera lens and the image sensor or film plane. They are typically used to achieve closer focusing distances and to enable macro photography.

These tubes are hollow cylindrical devices that are placed between the camera body and the lens. They come in various lengths and are available in different diameters to fit different camera systems and lenses. Lens extension tubes do not contain any optical elements, so they do not affect the image quality or introduce any additional optical aberrations.

By increasing the distance between the lens and the image sensor, lens extension tubes allow the lens to focus at much closer distances than it would normally be able to. This results in a larger magnification ratio, allowing photographers to capture small subjects in greater detail.

Lens extension tubes are commonly used by macro photographers who want to capture close-up images of small subjects such as insects, flowers, or jewelry. They can also be used for other types of photography where a closer focusing distance is desired, such as product photography or portrait photography.

It's important to note that when using lens extension tubes, the effective aperture of the lens is reduced, which means that less light reaches the image sensor. This may require the use of a tripod or other means of stabilizing the camera to avoid camera shake and ensure sharp images.

Overall, lens extension tubes are a versatile and affordable accessory for photographers looking to explore macro photography or achieve closer focusing distances with their existing lenses.