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Bear in mind again to the great outdated days of March 2021, when a glint of hope surfaced exhibiting Canon was engaged on a set of fully new supertelephoto designs? Canon Rumors wrote then of a patent application surfacing that confirmed large, lovely, crazy-aberration-free lenses starting from a 200mm f/2 via to an 800mm f/5.6.
Properly, that patent application has now been registered as an official Japanese patent. Every lens confirmed tailored designs, utilizing related ideas, reasonably than throwing in teleconverting teams to double the focal size.
All the pieces else, within the meantime, went somewhat sideways. Canon lately opted to announce the discharge of differently-designed lenses, using magnification lens aspect teams on the prevailing 400mm f/2.8 and 600mm f/4 choices, each primarily based on EF-mount designs from some years in the past.
The anticipated picture high quality of the recently-announced manufacturing lenses – tipped off by way of the picture peak aberration graphs proven within the related patents – is a bit lower than the standard prompt by the graphs on this new patent. The graph above exhibits the brand new patent 600mm model’s anticipated variation from good (straight vertical strains). The 4 varieties of aberrations’ graphs look basically like 4 straight, vertical strains, and may most likely be thought of functionally good. That mentioned, the picture high quality of the newly-announced supertelephotos is predicted to be arduous or not possible to differentiate from that of earlier Canon designs, which is able to disappoint few.
Canon selecting as an alternative to run with the older EF designs, with quality-munching teleconverting parts; the a lot larger pricing; and the dearth of RF-mount options comparable to permitting built-in lens and sensor picture stabilization, have precipitated the brand new manufacturing announcement to land with a little bit of a thud. Not less than amongst discussion board dwellers, and particularly after Nikon launched (and final week began delivering in some international locations) its quick gentle, and three-times-cheaper 800mm f/6.3.
The lenses within the new patent, embody a 200mm f/2; a 400mm f/2.8; a 500mm f/4; an 800mm f/5.6 and a 300mm f/2.8.
As a result of the patent’s lenses all adjusted the design to the related focal size, none of these would produce manufacturing efficiencies in comparison with the introduced lenses, which share many parts. That is chilly consolation to Canon shooters who don’t look like sharing in these efficiencies; the brand new variations costing roughly 20 % greater than earlier fashions.