I have to agree with Superku, the bloom overbrightens the image a lot. It's caused by the blending mode of the bloom (additive-blending). When using bloom you have to adjust it carefully to not mess up the final image.
...and if you have some experience with shaders I suggest you to stay as far away from additive-blending as possible because there's nothing which creates more overexposure than this blending technique due to the limited color-range which can be displayed.