Could you elaborate on how it's been an improvement? I always thought it'd be overkill for regular business calls.

In a word: bokeh. I'm running a 50mm f/1.8 lens on a full-frame sensor. My job requires me to interact with external customers, sometimes in a pre-sales role. Appearances shouldn't matter, but they do. Anything I can use to present a more professional and "expert" image is a win for me.

Thanks for documenting that; 'twas a real joy to go through.