为什么智能手机的百万像素并不像你想象的那么

2019-06-08 13:47:41

来源标题:为什么智能手机的百万像素并不像你想象的那么

  为什么智能手机的百万像素并不像你想象的那么重要

  如果你曾经购买过新的相机或智能手机,你可能已经听过“百万像素”一词。基本上,它是一种根据能够捕捉的像素数快速描述相机分辨率的方法。

                  一百万像素指的是一百万个像素,它们是组合成图像的小方块信息。因此,如果一台相机具有800万像素的分辨率,它将能够捕获每英寸大约800万个小方块信息的图像,正如About.com的照片专家解释的那样。

                  大多数智能手机品牌在讨论照片质量时通常都会参考他们设备的百万像素数量—而较新的手机型号通常配备改进的相机,具有更高的百万像素。例如,三星Galaxy S5和Galaxy S6上的相机都配备了1600万像素的传感器,而Galaxy S4则配备了1300万像素的摄像头。 iPhone 6s和6s Plus都配备了1200万像素的摄像头,比老式iPhone的800万像素有了改进。

                  百万像素在其广告中被品牌吹捧的方式可能会让一些人相信更高数量的百万像素总是意味着更好的照片。有时候这可能是真的。但根据六月创始人兼首席技术官Nikhil Bhogal的说法,情况并非总是如此,该公司生产同名智能烤箱。在6月联合创办之前,Bhogal是Apple的一名软件工程师,负责iPhone的相机技术。

                    

                      

                  

                    

                      

                  

                  Bhogal表示,像素质量比相机传感器中的实际像素数更重要,特别是在智能手机相机方面。 “即使在一张小图片中,你也可以收集到大量高质量的信息,”Bhogal说。 “你不需要拍摄40万像素的照片来获取那么多信息。”

                  那么提高相机传感器上像素的质量意味着什么呢?在某些情况下,它可能意味着使单个像素更大,而不是将更多像素塞入给定空间。这可以提高照片质量,但不会增加百万像素的数量。

                  Bhogal比较了像素收集光线的方式以及水桶如何收集雨水。 “水桶越大,它们可以收集的光子就越多,”他说。

                  

                      2015年最美丽的无人机照片中的15张

                  

                    

                      

                            

                              

                              

                                

                                        

                                    

                                

                                

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                                    在这种名为“圣诞树”的替代方法中,Piotr在长时间曝光照片中攻击无人机的灯光。

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                                    中国四川省成都市孟子湾游泳池的俯视图。

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                        广告

                        

                          

                            

                        

                        

                      

                  

                  Bhogal的解释与其他行业专家在解释百万像素和相机传感器之间的关系时所说的一致。 Gartner分析师Jon Erensen告诉CNET,更大的像素通常可以让光线更容易找到相机传感器的光敏部分。

                  较高质量的像素也会减少照片中出现的噪点,因为这些斑点区域通常是由于缺少光线造成的。 “随着质量越来越好,噪音越来越低,”Bhogal说道。 “所以你会得到更好的黑色,更好的色彩分辨率,更好的对比度,更清晰的画面。”