Four days ago I put out a very nerdy video about the variable aperture lens in the new iPhone 18 Pro, and it has since become the most watched thing I have made all year. I did not see that coming. What I really did not see coming was the comment section. A lot of you disagreed with me, at length, and told me I had missed the point entirely. So I went back through every one of those arguments. I still think you are wrong, and this time I went outside and measured it. The short version of that first piece is that phone sensors are tiny and permanently starved for light, so stopping down is the…