Ultraviolet (UV) filters are clear, glass or plastic attachments for digicam lenses. Their main objective 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 situations. Whereas they provide some safety towards scratches and mud on the lens component, their impact on seen gentle is usually negligible with fashionable lenses and sensors.
The price of a UV filter can fluctuate dramatically, from a number of {dollars} to over 100. This vary displays variations in development high quality, coatings utilized to reduce reflections, and the supplies used (e.g., normal 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 danger of flare and ghosting, particularly in difficult lighting situations. The historic context of UV filters dates again to movie images, the place they had been extra very important as a result of movie’s sensitivity to UV gentle. At this time, their function has largely shifted to lens safety.