Tamron, Sigma & Canon 70-200 f/2.8 Portrait Lens Review: Do you need the name brand?

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VIDEO TABLE OF CONTENTS:
0:00 - Introduction
1:14 - Kit lens and 50mm portrait examples
4:10 - 70-200 f/2.8 outdoor portrait examples
5:57 - Lab test: Sharpness
7:37 - Lab test: Chromatic aberration
9:31 - Lab test: Vignetting
10:50 - Lab test: Bokeh
12:44 - Build quality
15:09 - Autofocus and sports
16:52 - Color
17:55 - Summary
22:05 - Why we left out certain lenses