LensTip.com

Articles

Polarizing filters test

10 August 2009
Szymon Starczewski

26. Marumi Wide MC C-P.L 72 mm

Polarizing filters test - Marumi Wide MC C-P.L 72 mm
Polarizing filters test - Marumi Wide MC C-P.L 72 mm
Marumi Wide MC C-P.L 72 mm
Price: 179 PLN


Marumi products are valued by photographers on account of good price/quality ratio. Filters with DHG symbol are equipped with improved antireflection coatings and the glass edges are blackened to avoid internal reflections.

Results of the test

Transmission and extinction coefficient
Polarizing filters test - Marumi Wide MC C-P.L 72 mm

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

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

Red color extinction coefficient: 3.85E-4 - Score: 3.5/4
Green color extinction coefficient: 6.52E-4 - Score: 3/4
Blue color extinction coefficient: 2.16E-2 - Score: 0.5/4
Mean transmission of the whole spectrum: 36.1% - Score: 2.22/3
Score:
9.22/15
Flares
Without filter
Polarizing filters test - Marumi Wide MC C-P.L 72 mm

With filter
Polarizing filters test - Marumi Wide MC C-P.L 72 mm

Score:
6/7.5
Scattering
Polarizing filters test - Marumi Wide MC C-P.L 72 mm

Luminance: 86
Score:
2.37/5
Vignetting
Edge darkening: 2.9%
Score:
3.94/5
Homogeneity
Polarizing filters test - Marumi Wide MC C-P.L 72 mm

Slight flaw in homogeneity
Score:
4.5/5
Final score
Overall ranking: 10th place
Econo-ranking: 11th place
26/37.5 pts (69.3 %)
-0.16 pts

Usage

The filter didn’t cause any problems during the tests. The ring is a little too resistant to turn, especially because it’s quite narrow.

Summary

10th place in the overall ranking (26/37.5)
The transmission curve is flat in the visible spectrum, only violet color is transmitted a little worse. It’s not extinguished entirely as well, however it’s not an important effect. The polarizer becomes transparent in infrared. The extinction coefficient of about 4-5/10000 is not a bad result for a foil polarizer. C1 and C2 graphs indicate that we’re dealing with a quarter-wave plate of zeroth order designed for the middle of visible spectrum. On one hand, the filter can show off with not bad transmission, on the other we have too much scattering and flares. You need to consider if it’s worth getting into the slim version, if at the same price there’s a slightly optically better Marumi MC cpl, which for 17 mm focal length and a 1.5 crop sensor introduces no additional vignetting.

Filter for tests was lent by Pstryk.pl