Ultraviolet (UV) filters are clear, glass or plastic attachments for digicam lenses. Their main function is to dam ultraviolet gentle from reaching the sensor. A typical false impression is that they considerably enhance picture high quality in regular taking pictures circumstances. Whereas they provide some safety towards scratches and dirt on the lens component, their impact on seen gentle is mostly negligible with trendy lenses and sensors.
The price of a UV filter can range dramatically, from a number of {dollars} to over 100. This vary displays variations in development high quality, coatings utilized to attenuate reflections, and the supplies used (e.g., commonplace glass versus extra sturdy and costly choices). Whereas cheap filters may suffice for primary safety, higher-quality filters can present higher optical readability and sturdiness, decreasing the chance of flare and ghosting, particularly in difficult lighting circumstances. The historic context of UV filters dates again to movie images, the place they have been extra important as a result of movie’s sensitivity to UV gentle. At the moment, their position has largely shifted to lens safety.