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The Sigma AFA-940 52 mm UV Filter offers outstanding protection for your camera sensor against damaging ultra-violet radiation, as well as providing a means of physical defence for the lens glass.A UV filter that's digitally optimisedCovered with Sigma's dynamic multi-layer lens coating, this high-class filter has been built with digital optimisation to counterbalance the extremely reflective nature of imaging sensors.Older filters would reflect light off the sensor, bouncing it off the lens...
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