Once upon a time, Sigma was a brand thought of by many as the compromise lens if you couldn't afford the household names. Times have changed, though, and Sigma has gone beyond offering competitive lenses to making remarkable lenses and even some notable industry firsts. Being a photographer who works heavily in product work, I decided to put the Sigma 70mm f/2.8 DG Macro Art lens in a shoot-off against the Canon EF 100mm f/2.8L Macro, and the results were... well, read on and find out for yourself!