Photons Arent Particles

F stop isn't T stop, meaning number of glass elements and other design factors affect how much light reach your sensor. Also consider that APSC will have greater depth of field at the same f-stop ...

So if you shoot primarily JPEG, what's your auto iso setting? Minimum 200 to 6400 max?

So from what I understand, ISO is just applying gain to whatever was already recorded to the sensor and has absolutely no connection to exposure triangle, as is commonly taught. And the fuji ...