4 year Swiss warranty. The XF500mm F5.6 R LM OIS WR is a super-telephoto lens with a focal length of 500 mm (equivalent to 762 mm 35mm) and an aperture of F5.6. Developed for use on the APS-C sensor with 1.5x crop factor, the lens offers an impressive magnification that can be increased even further with a teleconverter.Although it is a super telephoto lens, the XF500mmF5.6 R LM OIS WR is exceptionally light and compact, weighing in at around 1,335 grams. The advanced image stabiliser allows up to 5.5 EV stops* longer exposure times. This allows you to take sharp super-telephoto shots even hand-held. The lens is particularly suitable for taking pictures of birds, wild animals and aeroplanes, for example.