Canon Extension Tube EF25 II on a Zoom Lens

Canon Extension Tube EF25 II paired with EF 70-300mm f/4-5.6L IS USM lens

With Canon Extension Tube EF25 II

Testing the Canon Extension Tube EF25 II Canon EOS 6D DSLR / EF 70-300mm f/4-5.6L IS USM lens

An extension tube is a cost-effective hollow tube that increase magnification of subject / decrease minimum focus distance between lens and subject. It does not replace a macro lens, but works well for bringing smaller subjects closer.

There are various brands on the market. The Canon tubes are designed to work on Canon EOS DSLRs with either a Canon EF or EF-S lens.

The magnification effectiveness will depend on the focal length of the lens used. The extension tube fits between the DSLR body and lens to increase subject magnification. Although not true macro magnification it is very useful for smaller subjects (in the absence of a dedicated macro lens). 

Wild Flowers with Extension Tube EF35 II at Constantia, Cape Town >> 

Extension Tube Shooting Location
Arnhem Milnerton, Cape Town

Canon DSLR / Lens / Extension Tube

• Canon EOS 6D DSLR camera body 
• Canon EF 70-300mm f/4-5.6L IS USM lens 
• Canon Extension Tube EF25 II

Av Mode - Aperture Priority Settings

• Aperture f/5.6 - f/11 
• ISO 100 - 640 
• Lens Autofocus on 
• Shutter speed: various (auto in Av mode) 
• All images handheld without flash

More about the Canon Extension Tube EF25 II & Product Images

A quick look at the Extension Tube option for Close-Up Photography
A quick look at the Extension Tube option for Close-Up Photography

Canon Professional Network / The Digital Picture / EOS Magazine
Canon Professional Network / The Digital Picture / EOS Magazine

Using a Telephoto Zoom Lens for Close-Up Photography
Using a Telephoto Zoom Lens for Close-Up Photography

(Click to Enlarge / Slideshow)

Canon EOS 6D / 70-300mm Lens / Extension Tube

Canon EOS 6D / 70-300mm Lens / Extension Tube

Canon EOS 6D / 70-300mm Lens / Extension Tube