LensTip.com

Articles

Polarizing filters test

10 August 2009
Szymon Starczewski

23. Marumi DHG Circular P.L.D 72 mm

Polarizing filters test - Marumi DHG Circular P.L.D 72 mm
Polarizing filters test - Marumi DHG Circular P.L.D 72 mm
Marumi DHG Circular P.L.D 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 DHG Circular P.L.D 72 mm

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Red color extinction coefficient: 2.83E-4 - Score: 3.5/4
Green color extinction coefficient: 2.26E-4 - Score: 3.5/4
Blue color extinction coefficient: 1.21E-2 - Score: 0.5/4
Mean transmission of the whole spectrum: 33.97% - Score: 1.79/3
Score:
9.29/15
Flares
Without filter
Polarizing filters test - Marumi DHG Circular P.L.D 72 mm

With filter
Polarizing filters test - Marumi DHG Circular P.L.D 72 mm

Score:
5.25/7.5
Scattering
Polarizing filters test - Marumi DHG Circular P.L.D 72 mm

Luminance: 19.1
Score:
4.85/5
Vignetting
Edge darkening: 2.9%
Score:
3.94/5
Homogeneity
Polarizing filters test - Marumi DHG Circular P.L.D 72 mm

Without reservation
Score:
5/5
Final score
Overall ranking: 4th place
Econo-ranking: 2nd place
28.3/37.5 pts (75.5 %)
2.14 pts

Usage

The filter didn’t create any problems during the tests. It’s easily cleaned. The ring turns smoothly, a slight swoosh of friction is audible.

Summary

4th place in the overall ranking (28.3/37.5)
The transmission curve is flat up to red, after crossing 700 nm rises a little. Violet color is not extinguished entirely, but it’s not a noticeable effect. The polarizer becomes transparent in infrared. The coefficient of extinction of about 2.5/10000 is a good 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. The filter presents a high level. The only thing you can complain about is flares, but their level is not high. This, combined with reasonable price (179 PLN) makes the filter commendable.

The editorial staff of lenstip.com have decided to award this filter with “Good purchase according to LensTip.com” for being the second on the list in the econo-ranking of polarizing filters.

Polarizing filters test - Marumi DHG Circular P.L.D 72 mm


Filter for tests was lent by Pstryk.pl