Have you ever wondered whether or not your filter is coated? The costs of coating are not low, and yet coated filters usually create better images.  The easiest way to tell whether a filter is coated is to hold it toward fluorescent lights and watch the reflections on it─if the color remain the same, then it means that  it has not been coated yet, and if the color changes, such as turns green or purple, then it means that  it is coated. The merits of coating includes :

Enhancement of Transmittance

In general, the transmittance of optical glasses after polishing is above 90%, but there are still some rays of light that will be reflected off. The filters of Miview’s features anti-reflection coatings whose function is absorb lights that would originally be reflected off, thus the transmittance can be enhanced.     Take Miview’s UV filters for example, their transmittance are usually above 99%, so that users won’t have to worry about the problem of dimming when they install a UV filter onto the lens.

The coatings of Miview’s filters also feature a protective function. When using a filter, one will certainly encounter the problem of dirts, which will increase the frequencies of cleaning and therefore result in filter abrasion (it is the key factor). Miview filters utilize mostly multi-layer nano coastings which feature a sequence of advantages such as superb water repellency, anti-grease and dirt, anti-elastic electricity, anti-finger printing, anti-dust, and etc., all of which can greatly reduce the frequencies of cleaning. All users have to do for daily care of the filters is just blow off the dusts on the surface with a dust blower.

Eliminate Bright Lights and Reflections (especially between the space of the filter and the lens)

The reflections of the surface will not only reduce the transmittance but can also cause glares which will directly affect the photographing effect.

Miview’s filters are coated both sides, such that it can not only eliminate all reflections of all external rays of light but also prevent the rays from scattering into different direction after they cut through the filter, thus ensuring the best photographing quality.

Miview Nano-coated UV Filter

Japanese Non-coated Filter

Picture on the right is a filter without any coating, the reflection color is the same as it is at the scene. The left picture is a Miview filter whose reflection color turns out to be green (but it’s not the color that will be reflected on the image). It is also clear that the reflections are fewer and smaller by far.

Miview Nano-coated UV Filter

Japanese Non-coated Filter

The golden chip on the left picture is more saturated, and the area of the black cloth is darker too, on the contrary, the picture on the right did not exhibit such strong saturation due to the reflection problem, this is exactly difference between a coated and an uncoated filter.