重新定位取景器网格线的位置

Recalculate the Position of the Viewfinder Gridlines

为了方便摄影师构图时参考确定画面趣味中心的位置和运动范围,照相机、摄像机取景器中均采用三分屏网格线,网格线定位于画面边长的三分之一处,即"三分法".许多学者将其来源归纳为黄金分割原理在画面分割上的具体应用,因为0.382≈1\3;但是,0.382与0.333还有近0.05的差距,从数学角度不够严谨.如果将黄金分割原理在画面中应用最普遍的"完美三角三分法"和斐波那契螺旋曲线的收缩点引入到画面分割中,假设人眼的双眼视觉重心就是画面的视觉趣味中心,并修正实验观察可能带来的误差;可以通过数学计算出网格线不再是平均分布于画面而是按28∶44∶28的比例来分布.新的分割方式将为数码影像设备在切换不同画幅拍摄时提供更加方便而快捷的画面构图参考.

In order to facilitate photographers while framing reference to determine the location and range of motion picture fun center in camera and video camera viewfinder are designed thirds screen grid lines,they are positioned to the side length of one-third of the picture that the ＂ Rule of Thirds.＂ Many scholars say that its source is the golden section on the specific application of the principle of split screen,because 0.382 ≈1 ／ 3; however,there are nearly 0.05 gaps between 0.382 and 0.333,do so from a mathematical perspective it is not enough rigorous.If the golden section principle of the most popular ＂perfect triangle Rule of Thirds＂in the picture and the Fibonacci spiral contraction point of the curve is introduced into the split screen,we assume that the center of gravity of the human eye binocular vision is the center of the screen visual interest,error correction by experimental observation may bring; can be calculated by mathematical mean they are no longer distributed in the ratio of 28∶ 44∶ 28 by the picture but to distribution.The new division will provide a more convenient way and quick reference picture composition digital imaging device when switching between different frame shooting.