i changed this section inside the mastereffects.ch during the level i press F5 but nothing happens !!! no aberration !
//FISHEYE, CHROMATIC ABBERATION
#define fFisheyeZoom 0.5 //[0.5 to 1.0] some lens zoom to hide bugged edges due to texcoord modification
#define fFisheyeDistortion 0.15 //[-0.3 to 0.3] distortion of image, fish eye effect
#define fFisheyeDistortionCubic 0.15 //[-0.3 to 0.3] distortion of image, fish eye effect, cube based
define fFisheyeColorshift 0.1 //[-0.1 to 0.1] Amount of color shifting