An inspection method and apparatus for detecting defects or haze of a sample, includes illuminating light to the sample from an oblique direction relative to a surface of the sample with an illuminator, detecting first scattered light at a forward position relative to an illuminating direction from the sample with a first detector, detecting second scattered light at a sideward or backward position relative to the illuminating direction from the sample with a second detection, and processing a first signal of the first scattered light and a second signal of the second scattered light with different weighting for the first signal and for the second signal with a processor.