Sony a7RIV vs a7RIII vs a9: Autofocus Clinic | 4K

Sony a7RIV vs a7RIII vs a9: Autofocus Clinic | Photographer Dustin Abbott shares insights on the autofocus performance of three Sony options - the a7RIII, the a7RIV, and the now-discounted a9. Tracking, buffer depth, Eye AF, and more. | Visit the image gallery: http://bit.ly/a7RIVig | Purchase the Sony a7RIV @ B&H Photo https://bhpho.to/2nUgnno | Amazon https://amzn.to/2oGpVD1 | Amazon Canada https://amzn.to/2mY8UDW | Amazon UK https://amzn.to/2n9GWF3 | Amazon Germany https://amzn.to/2nXhene | Ebay http://bit.ly/a7RIVda

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My filming setup: Sony a7R III: B&H Photo: https://bhpho.to/2D6ibNO or Amazon: http://amzn.to/2CNxOvH | or | Sony a9 @ B&H Photo: https://bhpho.to/2HyWIyt or Amazon: https://amzn.to/2s1vYE0
Tamron 28-75mm F2.8 RXD @B&H Photo: https://bhpho.to/2FA00la or Amazon https://amzn.to/2G2kaEr

Lights: Rotolight AEOS @B&H Photo https://bhpho.to/2IK7mqV | Genaray Contender @B&H Photo: https://bhpho.to/33HbGNM | and Aputure AL-MW: https://bhpho.to/2N3MtZV

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