===== Canon RF 400mm f/2.8 L IS USM ===== 
{{ :lens:canon-rf-400mmf2.8lisusm.png?direct&400|}}
==== Summary ====
Delivering high-performance for professional photographers as well as inheriting the optics of the EF 400mm f/2.8L IS III USM model, the RF400mm F2.8 L IS USM is the go-to choice to help capture superb shots of sports, wildlife and more. Its optical image stabilization system with up to 5.5 stops* of shake correction, including three IS operation modes, helps to deliver sharp results – whether hand-held or mounted on a monopod. For brilliantly clear results even in challenging situations, Super Spectra Coatings (SSC) and Air Sphere Coatings (ASC) help minimize ghosting and flare. The RF400mm F2.8 L IS USM is also compatible with both the RF 1.4x and 2x Extenders to get you even closer to the subject.
==== Tech Specs ====
| Manufacturer    |Canon|
| Series          |RF|
| Model           |L IS USM|
| Focal Length    |400mm|
| Max Aperture    |f/2.8|
| Min Aperture    |f/32|
| Format          |FF|
| Image Circle    |⌀|
| Minimum Focus   |8.2ft|
| Focus Rotation  |°|
| Iris Blades     |9|
| Optical Design  |17/13|
| Squeeze         |-|
| Front Diameter  |-|
| Filter Thread   |52mm|
| Focus/Zoom Rod  |-|
| Native Mount    |RF|
| Data Protocol   |-|
| Length          |14.4in|
| Weight          |2890g|
| Body Telescope  |-|
| Body Material   |-|
| Focus Drive     |-|
| Iris Drive      |-|
| Zoom Drive      |-|
==== History ====
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==== Service ====
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==== Cine-Mod ====
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==== Notes ====
==== Media ====
{{ :lens:rf400mm_f2.8l_specifications_final_4.13.21.pdf |}}