Speed Booster Sigma 150-600mm

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Aussie Coop
Aussie Coop Regular Member • Posts: 396
Speed Booster Sigma 150-600mm

Has anyone used the Sigma 150-600 Contemporary on an Eos M with the Viltrox 0.71 Speed booster ?

I read there was a vignette and Im trying to find out how much and what people thought?

The M6 is a secondary camera and Im usually using the Sigma on my EosR but was thinking the boost in light would come in handy.

 Aussie Coop's gear list:Aussie Coop's gear list
Canon PowerShot S100 Canon EOS 5D Mark III Canon EOS M Canon EOS M6 Canon EOS R +12 more
Canon EOS M6 Sigma 150-600mm F5-6.3 | C
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