I use the Hama Skylight Filter 58mm mainly as a protection of my lens. I can as the average consumer see any significant deterioration of the recorded images of me. But I note that much versietere photographers have since more idea than I do and also written in the other reviews comments. But I also take pictures of very rare at night and with minimal lighting conditions. For me, therefore, an optimum price / performance ratio and can therefore recommend the filter safely continue.