Add a layer mask to this layer as shown below, this will create a better lightingcontrast for the hand and make this overall image look better.
按照下面的样子，添加一个图层蒙版，这样可以给整个画面增加整体光的对比度，画面看起来会更好一些。
2
With the traditional lamp lightingContrast, LED advertising light string with easy installation, light medium, safety, energy saving, maintenance-free, long life time.
与传统灯具光源对比，LED广告模组具有安装方便、亮度适中、安全节能、免维护、寿命长等优点。
3
In the mobile environment contrast ratio takes on critical importance, as the lighting in vehicle and outdoor environments is not the typical subdued office lighting.