LENS RENTALS

Fotodiox Automatic Macro Extension Tube Set - Canon EF Mount Rental

This Fotodiox Automatic Macro Extension Tube for Canon EOS (EF, EF-S) Mount SLR Cameras is perfect for Extreme Close-up Photography.

The Fotodiox Macro Extension Tube is a wonderful substitution for the expensive macro lens. They are exceptionally useful for macro photography, enabling you to convert almost any lens into a macro lens at a fraction of the cost while maintaining its original optical quality. By placing distance between your camera body and lens, focusing distance is shortened and the magnifying effect of your subject is created.

Fotodiox Pro Auto Macro Extension Tube Kit for Canon EOS is a set of automatic tubes that are able to communicate all electronic functions from the lens to camera including autofocus and auto-exposure. Available individually or as a set which contains all three extension tubes of 13mm, 21mm, and 31mm in length. The extension tubes can be used independently or added together for extreme macro photography. No other optical components are added with this kit, so the image will preserve the original optical properties of the lens.

Extension Tubes Overview

An extension tube is simply a hollow cylinder that fits in between your camera and lens, causing the lens to move farther from the sensor. This additional distance allows your lens to focus more closely, which in turn provides more magnification capability. Unlike most lens accessories, extension tubes don't add any extra optics, and are therefore relatively inexpensive, simple devices.

An extension tube increases lens magnification by an amount equal to the extension distance divided by the lens focal length. For example, adding a 25 mm extension tube to a 50 mm lens will give a magnification gain of 0.5X. Therefore, if the lens's original magnification was 0.15X, then the new magnification will be 0.15X+0.5X=0.65X. The closest focusing distance will also decrease to ~210 mm.

All camera lenses have some amount of native extension, which is used to focus on everyday objects. Lenses with closer focusing distances usually have more native extension, but these will also benefit less from extension tubes. Try experimenting with different lenses to see how extension affects magnification.