ISO or ASA, depending from what era you started your photography journey, has long been the topic of discussion of many photographers at events. First it was "What speed emulsion are you using?" in the film days, and now "How high have you set your ISO?" in the digital era.
As a pro sports photographer for many years, I have heard this conversation over and over again from those just starting up to the most professional photographers in the game – in fact, it's a kind of 'icebreaker' pitch-side between everyone, much like when you ask someone about the weather before you ask the question you really want to ask.
