public void setExposureCutOff(float exposureCutOff) {
        this.exposureCutOff = exposureCutOff;
    }
Define the color threshold on which the bloom will be applied (0.0 to 1.0)

@param exposureCutOff the desired threshold (&ge;0, &le;1, default=0)
jme3-effects/src/main/java/com/jme3/post/filters/BloomFilter.java