I have been doing some homework on properly using my speedlight. I am a little confused about one thing. I really don't know how to ask. So, here goes. Do I meter normally as if I were not using a flash & then compensate from there with the adjustments on my flash? For example: if I am using an 85mm lens & my subject is 10 feet away, my ISo is 100, my ss is 180 & my ap is 5.0 they what would my flash be set to? Does this question make sense or do I need to do more homework? Sorry for being dumb, just trying to figure this out. Thanks in advance for being so kind.