Description

Main Features

• Mount Type: Canon EF Mount
• Optical Conversion Factor:  1.4X that of the master lens
• Compatible Format(s): L Series lenses with 2.8 or faster aperture
• Autofocus: Yes
• Approx. Dimensions (Diameter x Length): 27.2mm x 72.8mm / 1.1 in. x 2.9 in.
• Approx. Weight:  220g / 7.8 oz
• Lens Type: Teleconverter
• Weather-Resistant

Extender EF 1.4x II

This extender has been re-designed optically and offers excellent performance with compatible EF lenses (same as the Extender EF 2x II).  Features a new seven-element design, and same weather-resistant design and anti-reflection internal construction as the new EF 1.4x II. The EF 1.4x II does 1.4 times the focal length of any lens it’s mounted to, and reduces its effective aperture by 1 stop. With the EF 1.4x II, AF is possible with any EOS body if the lens has an f/2.8 or faster maximum.  This lens is only compatible with fixed focal length L-series lenses 135mm and over, as well as the EF 70-200/2.8L, EF 70-200/2.8L IS, EF 70-200/4L, and EF 100-400/4.5-5.6L.