Canon 300mm f2.8 vs Sigma 120-300mm f2.8 - Portraits

In this video i compare two amazing lenses: the sigma 120-300mm f2.8 sport vs Canon 300mm f2.8 is for portraiture. While both lenses are very sharp. I wanted to see how they compared in the real world. Personally i find that Canon's lens is sharper and a true 300mm range, whereas the Sigma is practical, also very sharp, However, not a real 300mm range. Perhaps it was around 280-290mm... The Sigma is significantly heavier, making painful to shoot for more than 3-5 minutes at a time. Out of all the sample shots, i loved 3 out of 4 by canon, and only one by sigma (the blue outfit with flash being used). Which do you like?

Model: Ivonne Pronovich
Hair & Makeup/ stylist: Rosario Mannella @rosario_mannella