$1k superzoom lens recommendation? Sigma, Tamron, Rf800

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Tr3v420 Forum Member • Posts: 54
$1k superzoom lens recommendation? Sigma, Tamron, Rf800

When it comes to AF speed and IQ, which takes the cake?
150-600 Sigma Contemp

150-600 Tamron G2

RF 800 Canon
I am currently using the Canon RF 800mm and its excellent. But i cant help but wonder what that extra 2 stops (is it 2? more less?) of light would do for me. I often find myself worried about going out in cloudy weather with the f11 lens. Losing the 200mm range, would the sigma or tamron match IQ and AF speed?

Panasonic Lumix DMC-G2
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