Canon RF 600mm and 800mm f/11: are these fixed-aperture telephotos worth it?

Super telephoto primes have always been specialty lenses. Unless you were regularly shooting sports or wildlife, it was virtually impossible to justify the cost. Of course, a smaller sensor size makes it easier to get to the super telephoto focal lengths – essentially anything longer than 300mm – but even these lenses can still be quite expensive, especially the faster primes.

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