Sources say that Shima will release three RF bayonet lenses in February next year.

Thank CTOnews.com netizens and independent photographers for their clue delivery! CTOnews.com, Nov. 30, CanonRumors revealed that Shima plans to release three RF bayonet lenses in February next year, including two RF / RF-S zoom lenses and a RF / RF-S fixed focus lens, but it is not known whether the three lenses will be full-frame or APS-C lenses.

CTOnews.com Note: RF bayonet is a camera bayonet launched by Canon, which was launched with Canon EOS R camera in September 2018. The inner diameter of Canon RF bayonet is 54mm, which is the same as Canon EF bayonet. The flange distance of the EOS R and EOS RP cameras is 20 mm. The RF lens has 12 electronic contacts, more than the 8 electronic contacts of the EF lens, making the data transmission between the body and the lens larger and faster.

In addition, CanonRumors said Canon will release the RF 400mm f / 4 DO IS USM telefocus lens next year, which may adopt a new optical design.

Canon has previously launched three "DO" brand lenses, all of which are suitable for EF bayonets. The first was the EF 400mm f / 4 DO IS USM launched in 2001, followed by the more affordable zoom model EF 70-300mm f / 4.5-5.6DO IS USM in 2004.

In 2014, Canon released the EF 400mm f / 4 DO IS USM II, which improved the contrast issues found in the first version. However, CTOnews.com inquiry found that all EF DO-branded lenses that Canon has launched so far have been discontinued.

Many years ago, Canon showed off a prototype of the EF 600mm f / 4 DO IS USM that has never been on the market, and according to CanonRumors, Canon is developing a 600mm f / 4 DO lens, which will be released later than the RF 400mm f / 4 DO IS USM.