The Extension Tube EF 12 is installed between the prime lens and the camera body.

It is a simple way to enable close-ups at high magnifications by increasing the distance between the lens and the film plane enabling focusing at closer distances than otherwise possible. This close-up accessory maintains full electronic coupling between the camera body and lens and can be used with most EF lenses.

When used with selected lenses, this 12mm extension tube allows much closer focusing

• Compact and portable- a great accessory to take when shooting wildlife
• Contains no optical elements
• Maintains electronic contact between lens and body
• When used with selected EF and EF-S lenses, this 12mm extension tube allows much closer focusing- great when trying to fill the frame with tiny subjects.
• This 12mm extension tube fits between camera body and the lens, providing a brighter image that the Extension Tube EF 25 II

Extension Tube EF 12 II is especially suited for close-focusing with wide-angle lenses. Compatible with all lenses, except 15mm f/2.8 fisheye, 14mm f/2.8L and MP-E 65mm f/2.8.

The Canon EF 25mm Extension Tube II is used to allow a lens to focus closer than it would normally. This is accomplished by moving the lens 25mm farther away from the camera body's film plane or digital sensor by fitting between the camera body and the lens.

Extension tubes are thus commonly used for macro photography and sometimes for closeup portraits and when using the camera's TTL metering system, no exposure compensation will be required.

This updated version II is now also fully compatible with Canon Digital EF-S mount, as well as standard photo EF and TS-E fittings. Extension Tube EF 25 II is recommended for focal lengths of 50mm and up (EF-S 18-55mm can be used at middle and tele zoom settings).

• Compact and portable- a great accessory to take when shooting wildlife
• Contains no optical elements

This 25mm extension tube fits between camera body and the lens, providing even closer focusing than the Extension Tube EF 12 II

When used with selected EF and EF-S lenses, this 25mm extension tube allows much closer focusing- great when trying to fill the frame with tiny subjects.

• Compact and portable- a great accessory to take when shooting wildlife
• Contains no optical elements
• This 25mm extension tube fits between camera body and the lens, providing even closer focusing than the Extension Tube EF 12 II
• Maintains electronic contact between lens and body