Canon RF 800mm f/11 IS STM Lens

Canon RF 800mm f/11 IS STM Lens

The Ultimate Handheld Super-Telephoto Reach

For decades, capturing frame-filling shots of small birds, timid wildlife, or the craters of the moon meant investing in an incredibly massive, ten-pound professional lens that cost as much as a car and required a heavy-duty gimbal tripod. The Canon RF 800mm f/11 IS STM completely rewrites the rules of super-telephoto photography. By utilizing a clever retractable barrel design, specialized Diffractive Optics (DO), and a fixed f/11 aperture, Canon has created an 800mm lens that is astonishingly affordable, easily fits into a standard camera bag, and weighs under three pounds.

This lens democratizes extreme reach. Whether you are an aviation enthusiast tracking jets from a distance, a wildlife shooter on safari, or a backyard birder, this lens allows you to pull the most distant subjects right into your lap while leaving the tripod at home.

Why You'll Love This Lens

• Mind-Boggling Reach: 800mm provides extreme magnification, allowing you to fill your frame with distant, skittish subjects without disturbing them. If you want even more reach, mounting this on an APS-C camera like the EOS R7 or R50 yields an absolutely staggering 1280mm equivalent field of view.

• Unprecedented Portability: When you are done shooting, simply twist the locking ring to retract the lens barrel into itself. It collapses down to just 11 inches long and weighs only 2.77 lbs (1260g). You can easily hike all day with an 800mm lens hanging from your neck, which was physically impossible in the DSLR era.

• Handheld Stability (IS): Shooting handheld at 800mm drastically amplifies even the slightest heartbeat or hand tremor. To combat this, Canon built in a highly effective Optical Image Stabilizer that provides up to 4 stops of shake correction, ensuring a steady viewfinder experience and sharp images.

• Teleconverter Compatibility: If 800mm still isn't quite enough reach, this lens is fully compatible with Canon's RF 1.4x and 2x Extenders. Adding the 2x Extender turns this into a jaw-dropping 1600mm f/22 lens—and modern EOS R camera bodies will miraculously still autofocus at f/22.

• Diffractive Optics (DO) Technology: Canon utilizes gapless double-layer Diffractive Optics inside the lens. This highly advanced, specialized glass is what allows the physical barrel to be so surprisingly short and light while virtually eliminating chromatic aberration (color fringing).

• Smooth STM Autofocus: The stepping motor (STM) provides smooth, quiet, and accurate autofocus tracking that easily keeps up with walking animals or slow-moving aircraft.

Technical Specifications

Things to Note

The most important thing to understand about this lens is the fixed f/11 aperture. There are no aperture blades inside, meaning you cannot stop it down to f/16, nor can you open it up to let in more light. Because f/11 lets in a relatively small amount of light, this is strictly a "good weather" lens. You will need bright, daytime lighting to keep your shutter speeds fast enough to freeze birds in flight, and you will rely heavily on your camera's high-ISO capabilities if shooting under heavy canopy cover or at dusk.

Secondly, because of the dark f/11 aperture, your camera's autofocus area will be restricted. Unlike fast lenses that let you place an autofocus point anywhere on the screen, the AF area for this lens is limited to a large square box in the center of the frame.

Third, it has a very long minimum focusing distance of 19.69 feet (6.0m). If a bird lands on a branch closer to you than 20 feet, the lens will not be able to focus on it, and you will have to physically back up.

Finally, remember the retractable barrel mechanism. You cannot shoot while the lens is collapsed; you must rotate the locking ring, extend the front barrel fully forward, and lock it into place before the camera will allow you to take a photo.

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