01 October 2017

Testing the Canon Extension Tube EF25 II on a Zoom Lens Cape Town

Testing the Canon Extension Tube EF25 II On Tiny Flowers - Cape Town
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). 

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/11 - f/5.6 
  • 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

(Click to Enlarge / Slideshow)
Testing the Canon Extension Tube EF25 II On Tiny Flowers - Cape Town
Canon EOS 6D / 70-300mm Lens / Extension Tube


Testing the Canon Extension Tube EF25 II On Tiny Flowers - Cape Town
Canon EOS 6D / 70-300mm Lens / Extension Tube

Testing the Canon Extension Tube EF25 II On Tiny Flowers - Cape Town
Canon EOS 6D / 70-300mm Lens / Extension Tube