New RF Superzoom Lens Patents: RF 28-280mm f/2.8, RF 28-135mm f/4, RF 24-170mm f/4

Canon recently has registered several new RF mount superzoom lens patents, they are RF 28-280mm f/2.8, RF 28-135mm f/4, RF 24-170mm f/4. The RF 28-280mm f/2.8 lens should be a very large and heavy lens if it is real.

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