Sigma 28-105mm f/2.8 DG DN 'Art' lens review

Yet another striking new lens from Sigma...is that zoom range useful enough, and will the thing be SHARP enough for anyone to really want it, though? Find it here (Amazon affiliate link - thanks for the support!): https://geni.us/Sigma28105 All pictures taken by me on Sony a7R III and a5100 cameras. Support me on Patreon! https://www.patreon.com/christopherfrost Old Tamron lens equivalent from 1997: https://youtu.be/Q3F2wogITYc New Canon RF 24-105mm f/2.8: https://youtu.be/ujty73BuYco Equipment I use to make my videos (Amazon affiliate links): Canon EOS R5: https://geni.us/CanonEOSR5Body Canon EF-RF Adaptor: https://geni.us/CanonEFtoRF Sigma 50mm f/1.4 'Art': https://geni.us/Sigma50mm14Art Canon RF 35mm f/1.8 IS STM: https://geni.us/CanonRF35mm18Macro Marumi Fit and Slim CPL Filter: https://geni.us/MarumiFitSlim77 AudioTechnica AT2020USB+ Microphone: https://geni.us/AT2020USBPlusMic Rode Smartlav+ Microphone: https://geni.us/RodeSmartLavalierPlus Rode SC3 adapter: https://geni.us/RodeSC3MicAdaptor Zoom H1n Recorder: https://geni.us/ZoomH1nMiniRecorder DJI Mini 2 Drone: https://geni.us/DJIMini2FlyMore Music: 'Opportunity Walks', Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 http://creativecommons.org/licenses/b...