The Canon 1.4x extender features high-refraction, low-dispersion glass to control curvature of field and chromatic aberration of magnification for the highest image quality
As well as optimised lens coatings, a 3-layer combined lens helps to reduce ghosting by reducing the surfaces in contact with the air as much as possible
The exterior is coated in the same white heat shield coating as used on the RF 100-500mm F4.5-7.1L IS USM and RF 70-200mm F2.8L IS USM lens to prevent deterioration in performance in high temperatures
Constructed with a mechanism that prevents the lens elements from hitting those of the Canon 1.4x extender²
This Canon RF extender is designed for reliability and durability with vibrational shock resistance, as well as dust and water resistance for use by professionals and enthusiasts