Wow....Thom Hogan was spot on with his article earlier today: http://www.sansmirror.com/newsviews/2020-mirrorless-camera/lenses-let-through-less.html
This trend to slower and slower apertures is disturbing. I've managed to sort of adapt to my Sony 200-600 at f/6.3 but now "only" 500mm and another 1/3 stop loss of light? Enough already
is the RF 100-500 f4.5-7.1 filling the slot of the EF 100-400 for the RF lens lineup?, if the new RF is f5.6@ 400mm, it is areplacement for the 100-400 with an extra 100mm of f reach. Hopefully,Canon would only make this move if they can match or exceed the IQ of the 100-400.
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