Designed specifically with sports and wildlife photographers in mind, the Canon EF 200 to 400-millimeter f/4.0L Image Stabilization UltraSonic Motor Lens with Internal 1.4x Extender is the best lens for any sporting event or wildlife trip. The lens is highly resistant to dust and water, making it a very versatile lens that can be used next to a waterfall on a hike or if it starts to lightly rain at a football game. The internal 1.4x extender is an excellent feature for any wildlife photographers who wish to capture a small subject, such as a bird in a tree, without having to approach them up close. Since the extender is internal, adding any additional 1.4x extenders as an attachment when the internal switch is on will cause your image to turn out blurry. The extender is turned on and off by switching a lever, which is a benefit because it allows the autofocus feature to remain in focus regardless of whether the extender is switched on or off.

Without the extender on, the zoom is still extraordinary throughout its entire range. The zoom range can also be quickly increased, which means you will not have to change lenses in the middle of trying to capture an eagle flying overhead anymore. Regardless of your skill level, if nature or sports are your primary subjects, the Canon EF 200 to 400-millimeter lens with internal extender is exactly what you need.