As this filter prevents the bluish cast and loss in contrast, its main application area is taking images of distance views.
Compared to the eye, the sensor is much more sensitive to UV radiation and therefore reproduces diffuse UV radiation as a bluish cast.

Its effect cannot be replaced by digital imaging software at a later date. 

Rodenstock UV Blocking filters are characterized by the following features:

 The filter glass of 1.4 mm is especially thin and allows a smaller mount, which does not cause vignetting even with wide-angle lenses or zooms.
Due to its multi-layer coating with even more layers, there is very high light transmission and low reflection. Therefore, double images and stray light can be avoided even better.
Below 420 nm the blocking of the UV radiation is especially steep. Therefore, the UV radiation up to the border area to visible light is completely cut out, while short-wave blue light close to the UV range passes almost without hindrance. This improves colour fidelity and allows to keep the filter as a front glass protection on the lens all the time.
An extra protection layer which is extremely scratch-proof, water-repellent and dirt-resistant makes the glass plate more robust. It does not have any influence on transmission, keeps the surface clean for a longer time and allows easy cleaning.
Due to its minimal heat extension even with heavy variations in temperature, the brass mount does not create any quality-reducing mechanical tensions in the filter glass. Furthermore, the danger of getting stuck in the filter thread of the lens is reduced by the high slide capacity of brass.

The HR Digital UV Blocking Filter is available with a slimline mount. It is fitted with a female thread at the front side and a male thread of the same size at the rear. So, an additional filter or a lens hood can be fixed.