线索1：dpreview的测评，em10 ii在高ios下的噪点表现，无论JPG还是raw比以往的M43都要好，甚至跟尼康d7200和d5500看不出明显差异：Looking at the Raw files, we were quite (pleasantly) surprised: the E-M10 II appears to have less noise than the E-M5 II, significantly less noise than its predecessor, and even catches up in performance to the Canon Rebel T6S. That is, the E-M10 II appears to be punching above its weight with respect to low light performance, catching up to larger APS-C sensors. This is an intriguing result, and we verified rigorously via quantitative signal:noise ratio analyses, which confirmed the results you see in our linked studio scene comparisons against the E-M10, E-M5 II, and Canon T6S. We'll be investigating this further to rule out things like noise reduction at play, but color us impressed for now.  
相关测评：http://www.dpreview.com/articles/4887393042/bang-for-the-buck-olympus-om-d-e-m10-ii-review/8
相关讨论：http://www.dpreview.com/forums/thread/3901487
-------------------------------------------------------------------------------------------------------------------------------------------------
线索2：cameralabs对四个单电的噪点测评，Fujifilm XT10 vs OMD EM10 II vs Lumix GX8 vs Sony A6000 noise，xt10和em10 ii噪点控制明显比gx8和a6000好多了
At 3200 ISO, all four cameras are having to deal with ever-higher noise levels, with the Sony A6000 trying the hardest to eliminate them, but at the cost of ever-aggressive smudging. I'd say for image quality out-the-box, it's the least good-looking of the foursome, proving that having the highest resolution isn't necessarily the best choice. Meanwhile the Lumix GX8, with the second highest resolution here (and a smaller sensor than the Sony or Fuji) unsurprisingly suffers from noise sooner than those with bigger sensors or lower resolutions.

I'd say the Olympus OMD EM10 Mark II and Fujifilm XT10 are delivering the best overall images here, the Fuji thanks to its APS-C sized sensor and relatively low resolution, and the Olympus for its processing making the most of its sensor real estate.

具体网址：http://www.cameralabs.com/reviews/Panasonic_Lumix_GX8/noise.shtm
---------------------------------------------------------------------------------------------------------------------------------
线索3（别吐槽）：奥巴官网，em10,em5,em5 ii,ep5的有效像素都是标的1605万，em10 ii有区别，标的1610万。

----------------------------------------------------------------------------------------------------------
毕竟索尼新的1600万传感器是在四月公布的，那时em5 ii已经发布，离em10 ii发布还有好几个月，gx8用了其中的2000万像素的IMX269，gx 8除了像素提升，画质基本是没有提升，这样的话可以推测新发布的1600万的IMX159进步应该也不会很大，估计高感能提升小半档，这与dpreview的测试结果是很像的，大家一起研究下em10ii是不是新的IMX169呢？

另外如果gx8 100%和现在机型没差别，那它的画质就是提升的，并且这个提升并不算很小，相当于用更小的像素获得了原来更大像素才有的感光能力。所以不出意外，下一代APS-C一定有一块32MP的底，因为两者像素密度是一致的。

EM10 mk2的这个蓝斑，提到6400会更加明显，虽然没啥人会去用。

DPR说什么比以往43都要好，和D7200没区别，简直睁眼说瞎话，daylight下还算可以，切到low-light呢？看看这海量的蓝色斑块，简直比IMX109和MN34230还烂，这就是所谓更好的画质？至于说和D7200没明显差异，那更是胡说，P，S两家的24MP的SNR表现在像素级100%上的确和M43没明显差异，nikon可优化得好多了，根本没得比的。

至于cameralabs，根本还读不了EM10 mk2的raw，不知道Gordon光比个JPEG有啥必要，其实也没啥必要比的，结果就和DPR上没啥区别，放100%看差不多脏，缩了图大底优势，富士永远是超级干净无彩噪图像偏平滑，就那么回事。

还是这几个牙膏玩意，不把背照式拿出来一点兴趣都没有

我感觉你陷入了一种误区
新的IMX159对比同像素旧款IMX109
提升最大无非就是更好的功耗控制，更好的视频功能
以及一些极端条件下的画质提升（比如长曝的燥点控制）
但是这些其实不会影响到你拍出来的照片好坏
所以我觉得纠结这些意义不大

本帖由 iPad Mini2 (wifi) 客户端发布

可能是电气参数调优了。

请问“RX200",哪里有em5 ii和em10 ii是新底的证据呢？谢谢！

但是dxomarkem5 ii传感器评分跟老底一样，所以em5 ii应该是老底。dpreview评测em10 ii高感也比em5ii强，如果官网em 5 ii也标的1610，那线索3就不是em10 ii是新底的迹象了

EM5II和EM10II已经用了新的IMX159了
有什么争议吗
本帖由 iPad Mini2 (wifi) 客户端发布

em5 ii 也是1610万，你查奥林巴斯官网，说明和EM10 2一样的是新的传感器