Sigma 105mm f/1.4 ART: Dustin's Final Review | 4K

Sigma 105mm f/1.4 ART: Dustin's Final Review | Thoughts on focal length 85mm vs 105mm vs 135mm 0:35 | Build Observations 4:30 | Autofocus Accuracy 9:02 | Autofocus Conspiracy Theory 14:43 | Autofocus Tracking 16:27 | On Sony 17:28 | Image Quality 18:10 | Dustin's Wrap-up 21:17 Read the Final Review: http://bit.ly/105ARTda Visit the Image Gallery for more: http://bit.ly/105ARTig Purchase the Sigma 105mm f/1.4 DG ART @ B&H Photo: https://bhpho.to/2AA3Dbx | Amazon:  https://amzn.to/2v8t2nG | Amazon Canada: https://amzn.to/2LMuWV5 | Amazon UK:  https://amzn.to/2LK9v76 | Amazon Germany: https://amzn.to/2n2SC8S | Ebay: http://bit.ly/105ART Want to support this channel? Use these affiliate links to shop at: B&H Photo: http://bhpho.to/1TA0Xge Amazon: https://www.amazon.com/shop/dustinabbott Ebay: http://bit.ly/DustineBay Make a donation via Paypal: paypal.me/dustinTWI Get a discount off all Skylum Editing Software (Luminar, Aurora HDR, AirMagic) by using code DUSTINHDR at checkout: http://bit.ly/LuminarDLA Become a Patron: https://www.patreon.com/dustinabbott | Check me out on: Personal Website: http://dustinabbott.net/ | Sign up for my Newsletter: http://bit.ly/1RHvUNp | Instagram: http://bit.ly/DLAinsta | Google+: http://bit.ly/24PjMzv | Facebook: http://on.fb.me/1nuUUeH | Twitter: http://bit.ly/1RyYxIH | Flickr: http://bit.ly/1UcnC0B | 500px: http://bit.ly/1Sy2Ngu 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 DISCLAIMER: This video and description contains affiliate links, which means that if you click on one of the product links, I’ll receive a small commission. As an Amazon Associate I earn from qualifying purchases. Keywords: Sigma 105, Sigma 105 f1.4, Sigma 105mm f/1.4, Sigma 105mm f/1.4, Sigma 105 f1.4 Review, Sigma 105mm Review, Sigma, 105mm, f/1.4, 105 f1.4, Sigma 105mm 1.4 ART, ART, Dustin Abbott, Sigma 105mm 1.4 Review, Lens, Review, Comparison, Test, Autofocus accuracy, AF, Canon 5D Mark IV, Canon 5D4, Sony a7R3, Sony a7riii, Sigma MC-11, FE, Nikon D850, Video Test, Sample Images, Portrait