Rodenstock 49mm HR Digital Super Multi-Coated CPL Brass Mount - Hardened Glass
- Uses high-performance polarizing film free of veiling and with a neutral color effect to ensure no loss of image definition as well as unaltered colors and the lowest possible light loss
- The polarizing film and the l/4 layer are cemented between absolutely plan parallel glass plates to avoid reflections at the glass/air interface as well as further light losses and scattered light.
- Both outer surfaces are incredibly smooth, hardened and MC coated, including a nano coating to repel dust and water
- The black anodized brass slim line rotatable mount is so unobtrusive that it does not cause any vignetting even in shots with most wide-angle lenses
- Mount has front thread for a lens hood and a lens cap.
Filters can help produce better photos. However, the quality differences
between filters are huge. If you have a great lens, you do not want to risk
image quality loss due to inferior filters. Rodenstock guarantees the best
possible filter quality. The optical glass used must be homogeneous and Ãplan
parallelÃ. The surfaces must be smooth. The polish must be equal to that of
the surfaces of camera lens elements so as not to cause any scattered light.
The filter frame may not project too far beyond the front edge of the lens
barrel so that the filter does not cause vignetting with wide-angle shots.
Rodenstock filters have a very flat slim line frame. This allows room for a
front thread. The best material for filter frames is brass. Brass rings will
not bind when using two or more filters at the same time on the same lens. The
edges of all Rodenstock filters are blackened so that no contrast-reducing
reflections are caused there. When light is incident on a surface, it is
partly reflected. A circular polarizer reduces these reflections. Reflections
can be reduced or eliminated at an ideal angle of incidence of around 55
degrees. Reflections can also be amplified up to twice their brightness for
more intensive sun reflections on water. The blue light of the sky reflected,
e.g. from red roofs, green grass and foliage, is polarized. Landscape shots
taken with a polarization filter allow the blue tinge to be reduced producing
better color saturation. Blue light from the sky can be intensified using a
polarization filter rotated into a suitable. The circular polarization filter
requires 1.5 f-stops as a correction.HR Digital Circular Polarizers with Super
Multi-coatings have: The best optical glass and perfect optical surface
quality Multi-coatings with a high light transmission rate An extremely
scratch resistant coating and liquid and dirt-repellent coated A rugged slim
brass ring with front thread