Make Small Sensor Images Look Like They’re From Bigger Sensors

Take a look at the lead image for this story: what do you think it was shot with? It's a photo I use often here on the site. That photograph was shot with Kodak Portra with a Bronica ETRS. No editing was done. It looks like it could have been done with a modern full frame camera or some other digital camera, right? To be honest, I could have done it with 35mm, Micro Four Thirds, APS-C, etc. What really mattered what the lighting and the situation because the further truth is that the laws of exposure don't change.