测试机型有 红米 note2  、魅族pro 6s, 微信版本均为6.5.19。

似乎是无论quality参数设置多少，图片都经过压缩而且颜色缺少了R值

示例代码如下：

<camera device-position=‘back’ flash=‘auto’ binderror='bindError’class=‘camera’ ></camera>

<button bindtap=‘takePhoto’>拍摄</button>

takePhoto(){

        var self = this;

        wx.createCameraContext().takePhoto({

            quality: ‘high’,

            success:({tempImagePath}) => {

                self.tempImagePath = tempImagePath;

            },

            fail(e) {

                console.log(e);

            }

        });

  }

camera {

    width: 100%;

    height: 600rpx;

}