The answer would be self discipline.
1:A 3:H 6:B 5:C Thats all i know sorry but hope it helps
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Most often we call it the Golden Section, Golden Ratio, or Golden Mean, but it's also occasionally referred to as the Golden Number, Divine Proportion, Golden Proportion, Fibonacci Number, and Phi. You'll usually find the golden ratio depicted as a single large rectangle formed by a square and another rectangle.
Usually you control your exposure using aperture, shutter speed, and ISO; too much light is not usually a problem, because you can find an acceptable combination of the above to give the proper exposure even in the most intense sunlight. Most people have the opposite problem, too little light.
Sometimes for artistic reasons you can't adjust one of those parameters into submission. One common example is using a very long shutter time to get a smooth water effect for a waterfall. In that case you can use a neutral density filter to cut the amount of light coming into the camera.
They did THAT because the renassainces had to teach how to read And othe kinds of levels thats why they stop