The RF 800mm F5.6 L IS USM is a top model in the ever-growing RF lens lineup, offering unprecedented super-telephoto performance. It is aimed at professional photographers working with the EOS R series who seek the best possible image quality for hard-to-reach subjects, including action and wildlife. This fast super-telephoto lens is still usable handheld, weighing only 3140g, features a 4-stop image stabilizer (4.5 stops with IBIS), has a minimum focusing distance of just 2.6m, and is compatible with the RF 1.4x and RF 2x extenders, as well as a 52mm drop-in filter holder.
| Sensor compatibility | full size | 
| Weight | 3140 g | 
| Focus type | Autofocus, Manual focus | 
| Lens type | Normal Lens, Prime lens | 
| Bayonet lens mount | Canon RF | 
| Focal length | 800 mm | 
| Item number | 19528595 | 
| Colour | Black | 
| Minimum focus distance | 2.60 m | 
| Lens type | Normal Lens, Prime lens | 
| Bayonet lens mount | Canon RF | 
| Aperture | 5.60 f/ | 
| Min. aperture | 64 f/ | 
| Min. focal length (exact) | 800 mm | 
| Max. Focal length (exact) | 800 mm | 
| Focal length | 800 mm | 
| Sensor compatibility | full size | 
| Number of diaphragm blades | 9 x | 
| Filter thread | 52 mm | 
| Number of lenses | 26 | 
| Number of lens groups | 18 | 
| Lens equipment | Filter thread | 
| Optical zoom | 0.34 x | 
| Focus type | Autofocus, Manual focus | 
| Image stabilisation method | Optical | 
| Durability | Dustproof, Splashproof | 
| Country of origin | Japan | 
| Manufacturer commitment | SBTi | 
| CO₂-Emission | |
| Climate contribution | 
| Scope of delivery | E-180E Lens Cap, ET-155 Lens Hood, Filterholder 52mm with Protect-Filter, LS600 Lens Bag, Manual, RF 800mm | 
| Weight | 3140 g | 
| Length | 432 mm | 
| Diameter | 163 mm | 
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