LensTip.com

Articles

Polarizing filters test 2015

1 November 2015
Szymon Starczewski

7. Benro SD CPL-HD WMC

Polarizing filters test 2015 - Benro SD CPL-HD WMC

That make is rather associated with tripod stands, bags and backpacks than with filters. Still they have gathered a lot of positive opinions although the company comes from China. Taking into account the high quality of their equipment you simply have to take a closer look at their filters - we chose 4 models from different segments for our test.


- - - - - - - - - - - - - - - - - advertisement - - - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Results of the test

Transmission and extinction coefficient

Polarizing filters test 2015 - Benro SD CPL-HD WMC

  • Red color extinction coefficient: 3.94e-2; Score: 0.5/4
  • Green color extinction coefficient: 6.72e-4; Score: 3/4
  • Blue color extinction coefficient: 7.40e-3; Score: 1/4
  • Mean transmission of the whole spectrum: 43.6% Score: 3/3
    Score: 7.5 / 11 pts
Flares

Polarizing filters test 2015 - Benro SD CPL-HD WMC
Without filter

Polarizing filters test 2015 - Benro SD CPL-HD WMC
With filter

Score: 4.5 / 7.5 pts

Scattering

Polarizing filters test 2015 - Benro SD CPL-HD WMC

  • Luminance: 56.72
    Score: 3.45 / 5 pts
Vignetting
  • Vignetting difference: 2.04%
    Score: 4.42 / 5 pts
Homogeneity

Polarizing filters test 2015 - Benro SD CPL-HD WMC

  • Minimal streakiness
    Score: 4.75 / 5 pts

Final score: 24.6 / 37.5 pts (65.7%)

  • Overall ranking: 11th place
  • Econo-ranking: 18th place

Design, usage and summary

A slim ring filter with the ring glued or pressed in. With such a slim mount the resistance of the movement could have been a bit smaller but the work is still even and smooth. The elements are slotted very well together. The surfaces are similar to those from the PD model – they are comfortable to clean on the outside but rather difficult to clean on the inside. Overall the filter makes a solid impression.

The spectrum characteristics are similar to those of the previous model. There is a small tendency for warming of the colours; the extinction coefficient is good for green but less good in the areas of short-wave and long-wave.