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Product Description
Extends a super telephoto lens’ focal length by 1.4x, so that an 800mm focal length, for example, becomes 1120mm. The extra reach makes it possible to get larger close-ups with the original camera resolution.
- Dust and drip resistance design with white heat-shield coating
- Supports High-precision and Fast AF
- Excellent Flare and Ghosting Reduction
High Image Quality
A large aperture lens placed near the image sensor, the use of high-refractive, low-dispersion glass, and three cemented lenses that minimise air contact surface suppress field curvature, lens aberration and flare and ghosting, hence optimising corner-to-corner image quality.
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Reach For the Moon!
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Shot on EOS R5 with RF800mm f/11 IS STM
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Shot on EOS R5 with RF800mm f/11 IS STM with Extender RF 1.4x
Strength & Reliability
The lens features a vibration- and impact-resistant structure with a dust- and drip-resistant design, ready to withstand nature, motorsports, and other harsh professional and advanced shooting scenes.
Supporting heavy lenses is all in a day’s work for its robust, durable body.
AF Support
Shooting at super-long focal lengths means a shallower depth-of-field, which can make focusing tricky. On the Extender RF 1.4x, built-in microprocessors communicate with the lens, achieving high-precision AF over an area as large as up to 100% x 100% (horizontal x vertical) of the focal plane* helping you to lock focus on your subjects more easily.
*Actual AF area depends on the lens, extender, and camera body.
Lens Compatibility
| Lenses Compatible with Extender RF 1.4x |
After attaching Extender RF 1.4x | |||||
| Focal Length | Max Aperture | Autofocus Coverage (Approx. Horizontal × Vertical） |
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| EOS R3/R6 II/R8 | EOS R5/R6 | EOS R7/R10/R50 | EOS R/RP | |||
| RF400mm f/2.8L IS USM | 560mm | f/4 | 100% x 100%4 | 100% x 100%4 | 100% x 100%4 | 88% x 100% |
| RF600mm f/4L IS USM | 840mm | f/5.6 | 100% x 100%4 | 100% x 100%4 | 100% x 100%4 | 88% x 100% |
| RF600mm f/11 IS STM | 840mm | f/16 | 40% × 60% | 40% × 60% | 60% × 80% | 40% × 60% |
| RF800mm f/5.6L IS USM | 1120mm | f/8 | 100% x 100%4 | 100% x 100%4 | 100% x 100%4 | 88% x 100% |
| RF800mm f/11 IS STM | 1120mm | f/16 | 40% × 60% | 40% × 60% | 60% × 80% | 40% × 60% |
| RF1200mm f/8L IS USM | 1680mm | f/11 | 80% × 80% | 80% × 80% | 100% x 100%4 | 80% × 80% |
| RF100-300mm f/2.8L IS USM | 140-420mm | f/4 | 100% x 100%4 | 100% x 100%4 | 100% x 100%4 | 88% x 100% |
| RF100-400mm f/5.6-8 IS USM | 140-560mm | f/8-11 | 80% × 80% | 80% × 80% | 100% x 100%4 | 80% × 80% |
| RF100-500mm f/4.5-7.1L IS USM | 420-700mm3 | f/8-10 | 100% x 100%4 | 80% × 80% | 100% x 100%4 | 80% × 80% |
| RF200-800mm f/6.3-9 IS USM | 280-1120mm | f/9-13 | 100% x 100%4 | 100% x 100%4 | 100% x 100%4 | 40% × 60% |
1 The supported autofocus area range will vary depending on the camera and lens combination.
2 Requires EOS R3/R5/R6 II/R6/R8/R7/R bodies and compatible lenses for optimal dustproof and waterproof capability. Use in rain is not recommended.
3 When used with the RF100-500mm f/4.5-7.1L IS USM, the lens zoom operation range is limited to 300-500mm.
4 Applies when subject is detected, approximately 90% (horizontal) x 100% (vertical) otherwise.
