Got my R6, disappointed with AF performance on EF Sigma 150-600mm lens for bird photography

Started 3 months ago | Discussions thread
quiquae Senior Member • Posts: 2,050
Re: Got my R6, disappointed with AF performance on EF Sigma 150-600mm lens for bird photography
1

BirdShooter7 wrote:

quiquae wrote:

jpdodel wrote:

Hi, I checked and there is no firmware update for the 150-600mm except for a teleconverter they sell. I ordered the 60-600mm to see if it makes a difference with a more recent lens. I would get the new Canon RD 100-500mm but really don't want to lose the 100mm on the long end and one stop down in aperture. I really like the Sigma performance.

The RF 100-500's F7.1 is only 1/3 stop below the Sigma's F6.3, not one full stop.

Yes 1/3 stop slower and 100mm shorter

Canon RF 100-500L: 93.8×207.6mm

Sigma 150-600 Sport: 121mm × 290.2mm (310mm including EF-RF adapter)

You're right! The Canon is indeed approximately 100mm shorter.

(Funny how these coincidences work.)

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