Canon® Canon EF Extender 1.4x III

The Canon EF Extender 1.4x III is a popular teleconverter. Key features include:

• Improved Optical Performance

• Integrated Processor

• Fluorine Coating

High Quality Optics. The Canon 1.4x Teleconverter III features three groups of seven elements that ensure improved optical performance. All optical elements use Canon’s super-spectra coating, which reduces ghosting and flare to minimize post-processing requirements and a fluorine coating on the front and rear elements makes smudge marks much easier to clean.

Full Electronic Pass-Through. The extender features an integrated processor which ensures all focusing, metering, and ID information is available. Canon claims that, when combined with the range of premium Canon L-series lenses, these extenders enable higher AF accuracy.

The Canon 1.4X TC III is a great option if you need more reach with your compatible telephoto lens. While previous generations had a very noticeable effect on image quality and AF performance, the …

The Canon 1.4X TC III is a great option if you need more reach with your compatible telephoto lens. While previous generations had a very noticeable effect on image quality and AF performance, the TC III is huge leap forward. When used with a 70-200mm f/2.8L IS II, image quality and AF remains very high. Throw it on a Canon supertele, and you’d be hard-pressed to notice a difference. However, as a general rule, remember that low light does not mix well with teleconverters. Please note that you will see some focus hunting.