After several tests with this filter, the results are not too conclusive. Colors, sky, greenery etc .. not much difference by turning the ring filter and all this under a bright sun blue sky and a well and respecting the rules (pistol thumbs sun or 90 °) Info: the filter has not received the same image (packaging) that the model presented on your sales page, it has there a significance to the filter I received. Fast delivery, perfect packaging as always with AMAZON.