The RF 600mm F4 L IS USM features the outstanding characteristics of Canon RF lenses, such as aperture adjustment in 1/8 stops for video recording and an advanced optical image stabilizer, a function enabled by the RF mount's communication system that compensates for up to 5.5 stops of exposure. Additionally, the lenses offer dual drive for even faster autofocus in future cameras. Both lenses also have three manual focus speeds, allowing for precise control and full manual focus without the need to switch modes. Furthermore, two focus settings can be saved in advance, saving time when quick responses are needed and enabling beautiful pull-focus effects in video recordings. The focus ring can also be used as a lens control ring on some models of the EOS R series. Filters: 52mm drop-in filter, 3090g, 168x472mm, compatible with 1.4x and 2x extenders.