Canon RF 800mm f/5.6L IS USM & RF 1200mm f/8L IS USM
The RF 1200mm f/8L IS USM is the world’s longest AF focal length lens for mirrorless cameras. You can also use both the 800mm and 1200mm with the RF 1.4x or RF 2x extenders. Both with full AF and IS functionality.
Size & Weight
According to canon, the newly designed optical system enables them to achieve these long focal lengths in a design that is smaller and lighter than traditional super-telephoto lenses. They are both significantly smaller in size from their EF counterparts. The RF800mm is Canon’s lightest and shortest 800mm L-series lens and it tips the scales at 3.1kg. The RF1200mm weighs just 3.34kg. Making it13kgs lighter and 30cm smaller than its legendary predecessor the EF1200mm f/5.6L USM.
Both the RF 800mm f/5.6L IS USM and RF 1200mm f/8L IS USM work with Image Stabilization. The RF800mm provides up to 4.5 stops and the RF 1200mm up to 4 stops.
Both models feature a 9-blade circular aperture that can move in 1/8th steps, this allows for smoother transitions between aperture changes when shooting video.
The RF 800mm and RF1200mm are built to withstand a range of challenging shooting scenarios, from high temperatures to wet or dusty environments. Dust and drip-resistant sealing is used for mounting, switch and focus rings, and a fluorine coating is applied to the front element to reduce the chance of oil, water or dust sticking to the front of the lens. The RF800mm and RF1200mm also feature a highly reflective infrared heat shield coating. This white coating offers excellent UV resistance and helps reduce the temperature of the lens body to help maintain optical quality.