It has been a long time coming, and after what was  a plethora of false starts (most recently that it would be announced at Photokina with the 7D Mark II), it seems that the Canon 100-400mm is finally being updated.

Rumors about the new lens have been swirling for years and years, but have really picked up in the last several weeks as Canon Rumors, Canon Watch, and the other Canon rumor mill participants have all had posts go up regarding the 100-400mm replacement. All of which seem to now be validated – at least partially – with the leak of what appears to be an image of the updated 100-400mm IS II.

canon-100-400mm-mk-ii

The actual full name of the lens, which will be the Canon 100-400mm F/4.5-5.6L IS II, does have at least one very distinct difference from its predecessor. Unlike the original 100-400mm it has been said (and seems to be confirmed by the leaked image), that the new model will feature a standard zoom design, rather than the push/pull design Canon utilized in the original model.

It will be interesting to see how this performs and what the final specs on this lens actually are, considering it has much stiffer and higher performing competition than when the original was released. Sigma just announced their two new 150-600mm zooms, Tamron has had their 150-600mm out for almost a year, all of which beat the 100-400mm in focal range and image quality. So it will be interesting to see how this lens fits into the market where it is already at a disadvantage.

[REWIND: Initial Hands on Impression of The Canon 7D Mark II From Photo Plus]

Remember, we have been teased about this lens before, so don’t go sell off all your telephoto lenses to get ready for this one. But given the rumors of late, and this supposedly leaked image, it seems likely the 100-400mm replacement may finally be arriving, sooner rather than later.

[via Canon Rumors]