im facing this problem 

[![enter image description here][1]][1]


  [1]: https://i.sstatic.net/7cVFa.jpg

the imported image from the explorer, a 16bit Png, is not showing up in the correct colorspace (i think) in the compositor

but its a png so its a sRGB colorspace, i dont understand what is wrong with this simple manipulation.

here is a simple step to reproduce this:
do a render in PNG16bit, import it in the compositor, compare renderlayer with imported result