More reach, no loss of image quality
The extender features high-refraction, low-dispersion glass to control curvature of field and chromatic aberration of magnification for the highest image quality.
Advanced lens design
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.
Designed to perform in extremes
The exterior is coated in the same white heat shield coating as used on the RF 100-500mm f/4.5-7.1L IS USM and RF 70-200mm lens to prevent deterioration in performance in high temperatures.
Seamless integration with RF 100-500mm f/4.5-7.1L IS USM
A mechanism which limits the zooming of the RF 100-500mm f/4.5-7.1L IS USM zoom range (300 to 500 mm) prevents the lens elements hitting those of the extender.
No compromise construction
Designed for reliability and durability with vibrational shock resistance plus dust and water resistance.