I’ve tested all 4 of Sigma’s bargain f/1.4 primes for Canon cameras – here’s how to decide which one to buy

When Canon finally opened its lens mount to third parties, Sigma was the first to deliver, and I’ve been testing the 16mm F1.4, 23mm F1.4, 30mm F1.4 and 56mm F1.4 DC DN Contemporary prime lenses.