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Canon Patent: RF 100-300mm F2.8 X 1.4 Extender Lens

Canon Patent: RF 100-300mm F2.8 x 1.4 Extender Lens

A new Canon patent application for another RF mount lens. Canon patent application 2023018429 (Japan, published 2/8/2023) discusses optical formulas for an RF 100-300mm F2.8 x 1.4 extender lens. From…

Is Canon Developing A Mirror Lens With Auto-Focus?

Is Canon Developing A Mirror Lens With Auto-Focus?

That's what a Canon patent application seems to suggest, a 300mm f/2.3 mirror lens. Read on. Canon patent application 2023013456 (Japan, published 1/26/2023) discusses optical formulas for a 300mm f/2.3…

Canon EOS R6 Mark II Review (video)

Canon EOS R6 Mark II Review (video)

Here is a Canon EOS R6 Mark II review in video format. At a glance: 24.2MP Full-Frame CMOS Sensor 4K60 10-Bit Internal Video, C-Log 3 External 6K ProRes RAW Recording…

Canon RF-S 18-150mm F/3.5-6.3 IS STM Review

Canon RF-S 18-150mm f/3.5-6.3 IS STM Review

Here is a Canon RF-S 18-150mm f/3.5-6.3 IS STM review. This is one of the less expensive lenses for the RF mount. At a glance: RF-S-Mount Lens/APS-C Format 29-240mm (35mm…

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