http://bit.ly/2PpiAkF
With the Canon RF 70-200mm f/2.8L IS already announced, it was only a matter of time before an f/4 version of the lens hit the market. This patent shows that Canon is actively working on such a lens. Unlike the RF 70-200mm f/2.8L IS, the f/4 version in this patent appears to show an internal zoom lens design. Canon RF 70-200mm f/4L:
Additionally, there is also an optical formula for an EF 58mm f/1.4 with what may feature a dual AF motor focus system according to Canon News. Canon EF 58mm f/1.4
Photography via Canon Rumors http://bit.ly/2CsmGDw April 18, 2019 at 07:40AM
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