IMPORTANT NOTE REGARDING WIDE-ANGLE LENSES.
Please note however that, in contrast to mass-colored (integrally colored) filter glass, the (486M) UV-IR cut filter is based on thin-film technology. More than 30 interference coatings are vapor-deposited on one side, while the opposite side is MRC-coated. In wide-angle lenses, the laws of physics lead to shallower incidence angles for peripheral rays. For geometric reasons these rays have to travel further through the interference coatings than rays traveling vertically through the coatings in the center of the lens. With increasing angle of incidence, this leads to a change in light color towards blue. This effect can clearly be seen by looking at an UV-IR barrier filter from an angle. The color of the reflected light changes, with a similar effect on the light traveling through the filter. The filter is therefore not suitable for lens systems with an angle of view of more than 60°
|Filter Type||Neutral Density|