1·Clicking on this button will recompute the vignetting factors for each field based upon the current lens data.
点击这个按键将根据当前镜头数据重新计算每个视场的渐晕因子。
2·Meanwhile a new method to compute the vignetting coefficients has been given.
文章同时给出了计算渐晕系数的新方法。
3·Otherwise, vignetting may occur when zooming out.
否则，可能会出现渐晕放大了。
4·Vignetting and distortion are both corrected excellently for a lens of this speed.
渐晕和变形都纠正了这种速度镜头出色。