The RF 1200mm F8 L IS USM is the flagship model of the ever-growing RF lens lineup, offering unprecedented super-telephoto performance. Since the Canon EF 1200mm f/5.6 L USM was released over 29 years ago, there has not been a lens like this. It provides the longest focal length available for mirrorless full-frame cameras on the market, is very compact at 537 mm in length, and weighs only 3340 g. The 4-stop image stabilizer with IBIS ensures stable shots, while the minimum focusing distance of just 4.3 m and compatibility with the RF 1.4 Extender and RF 2x Extender offer additional flexibility. It also features a 52 mm drop-in filter holder.
| Sensor compatibility | full size | 
| Weight | 3340 g | 
| Focus type | Manual focus | 
| Lens type | Normal Lens, Prime lens | 
| Bayonet lens mount | Canon RF | 
| Focal length | 1200 mm | 
| Item number | 19528594 | 
| Colour | Black | 
| Minimum focus distance | 4.30 m | 
| Lens type | Normal Lens, Prime lens | 
| Bayonet lens mount | Canon RF | 
| Aperture | 8 f/ | 
| Min. aperture | 64 f/ | 
| Min. focal length (exact) | 1200 mm | 
| Max. Focal length (exact) | 1200 mm | 
| Focal length | 1200 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 | 
| Focus type | Manual focus | 
| Image stabilisation method | Optical | 
| Durability | Dustproof, Splashproof | 
| Country of origin | Japan | 
| Manufacturer commitment | SBTi | 
| CO₂-Emission | |
| Climate contribution | 
| Scope of delivery | E-185C Lens cap, ET-60 lens hood, Filter holder 52mm with protective filter, LS1200 lens bag, Manual, RF 1200mm | 
| Weight | 3340 g | 
| Length | 537 mm | 
| Diameter | 168 mm | 
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