I’m not sure why it has taken so long but Canon have finally announced the replacement to their 100-400mm f4.5-5.6 L IS USM lens. They seem to be on a roll lately as they also released the belated update to the APS-C sensor sized EOS 7D too.
The new model dispenses with the dust-sucking push-pull mechanism and has had a host of optical improvements along with the latest IS technology that gives around 4 stops of stabilisation and can sense when it is on a tripod (at which point the IS disables itself). They have also innovated a bit as the tripod collar can be removed without taking the lens off the camera and the lens hood has a window allowing the rotation of a lens polariser or variable ND filter.
The new lens will be an excellent complement to the EOS 7D mark-II camera and will give an effective 160 to 640mm field of view. If the optics are up to it this will be the wildlife/sports camera to beat.
Unfortunately for me it’s too late (as is the EOS 7D Mark-II) as the overall weight combination will be too much, the new lens weighs more than its predecessor and costs £2000 which is around £760 more than the previous model. Interestingly the Nikon mark-II variant (80-400mm AF-S Nikkor f4.5-5.6G ED VR Lens) was £2500 when announced and is now £1900 before cashback; so for once Canon are competitive with their main competition.