The Aperture scale is one that is not intuitive to most beginning camera users, and can be cause for confusion. This video explains those common questions including:
- how f/stop is calculated
- how available light entering the camera doubles or halves when the aperture numbers don’t double or half
- how camera manufacturers calculate lens opening size requirements to attain the proper f/stop
[youtube https://www.youtube.com/watch?v=KmNIouLByJQ]