The UV filter is supposed to block ultraviolet rays. This was perhaps important for shooting film but most today’s digital image sensors are not very sensitive to UV. Most of the UV is blocked by the glass in the lens anyway. So often these UV filters are recommended by people as a lens protection mechanism.
At beginning, I bought into this. After all, it costs more to repair a scratched front element than a filter. I have never bumped my lens into anything or gotten a scratch of any significance but the filter really kept the front element particle free. I found myself comfortable wiping down the filter even with my shirt sleeves when I cannot find lens tissue or lens pen. I wouldn’t do that with the lens front element. I know that small scratches will hardly cause any image degradation. However I may have trouble selling my lens with scratches on the front element because not everyone understand this… Read More…
