Sony 20mm F2.8 vs Rokinon 21mm F1.4

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on B&H: https://bhpho.to/2n5c9p3
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In this video I compare the Sony SEL20F28 20mm F2.8 lens and the Rokinon RK21M-E 21mm F1.4 ED AS UMC High Speed Wide Angle Lens for Sony (Black).