I shoot a 5D3, mostly with my Canon 24-70 2.8 II. I am considering a prime to use as a general walk-around lens rather than always taking the much larger/heavier 24-70. Would like to get feedback on the Canon 50 vs Sigma 50. (The Art is out if my budget and a bit larger than I want.) I'd also consider the 40 Pancake.
Any experiences or opinions are appreciated.