New Canon ‘‘Big White’’ Lenses Are Coming

credits: Canon

Canon’s next generation of “Big White” super-telephoto lenses appears to be moving closer to reality. According to the latest rumours, updated versions of the RF 400mm f/2.8L IS USM and RF 600mm f/4L IS USM are currently expected to be announced sometime in late 2026. Rumours about replacements for both lenses have been circulating for months, including reports of development announcements that never happened, but recent information suggests Canon is still actively working on the project behind the scenes.

Both lenses have seen occasional stock shortages over the last few years, although availability has improved recently at many major retailers. That alone does not necessarily point to replacements being around the corner, as Canon has traditionally produced its super-telephoto lenses in batches rather than continuously. Major sporting events can also affect availability, with Canon Professional Services often supplying large numbers of lenses to photographers covering international competitions. Given how important these lenses are for sports and wildlife shooters, it is not unusual to see stock fluctuate throughout the year.

The more interesting part of the rumour involves what Canon may be adding to the new versions. Sources continue suggesting both lenses will feature built-in teleconverters, while also reportedly introducing a “first-ever” feature or technology, although nobody seems to know exactly what that means yet. There is also growing speculation that Canon is exploring some type of 500mm prime lens, potentially filling a gap between the 400mm and 600mm options. Beyond the flagship super-telephotos, Canon is also widely expected to expand its lineup of more ‘affordable’ long lenses. Many photographers still complain about the lack of RF replacements for lenses like the EF 400mm f/5.6L USM, and there remains plenty of demand for high-quality super-telephoto options in the $5,000–$6,000 range.