Articles
2009-08-10
Polarizing filters test
27. Marumi Water Proof Coat Circular P.L 72 mm
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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. This model is equipped with hydrophobic WPC layers.
Results of the test
Red color extinction coefficient: 1.07E-3 - Score: 2/4
Green color extinction coefficient: 1.13E-3 - Score: 2/4 Blue color extinction coefficient: 3.66E-2 - Score: 0.5/4 Mean transmission of the whole spectrum: 34.44% - Score: 1.89/3 Score:
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With filter Score:
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Luminance: 143.6
Score:
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| Edge darkening: 4.1% Score: |
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Slight flaw in homogeneity
Score:
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Usage
The filter didn’t create any problems during the tests. The ring turns smoothly and pleasantly.
Summary
19th place in the overall ranking (17.4/37.5)The transmission rises with wavelength, in the visible spectrum range from 60% to 80%. This may lead to warming colors. The transmission of violet and blue color, which should be extinguished, is at the level of 5%. The extinction coefficient of about 1/1000 is an average result of foil polarizers. C1 and C2 graphs indicate that we’re dealing with a quarter-wave plate of zeroth order designed for the middle of visible spectrum. There was no occasion to test the hydrophobic coatings, but this would by no means improve the results of other tests and measurements. Without a doubt this is the worst filter in the field. For 199 PLN we get a polarizer of an average extinction coefficient and enormous scattering, which treats to a series of flares, halo and lowering the contrast. Unfortunately, this is the test of polarizing and not effect filters, hence that last place.
Filter for tests was lent by Pstryk.pl
Chapters
- 1. Introduction
- 2. About light and polarization
- 3. Test procedure
- 4. Results and summary
- 5. B+W C-POL MRC 72 mm
- 6. B+W KSM C-POL MRC 72 mm
- 7. B+W Slim C-POL MRC 72 mm
- 8. B+W Slim KSM C-POL MRC 72 mm
- 9. B+W EW KSM C-POL MRC 72 mm
- 10. Fomei Digital CPL 67 mm
- 11. Fujiyama Digital CPL 72 mm
- 12. Fujiyama Digital DHG Circular P.L.D. 72 mm
- 13. Fujiyama Digital C-PL E 72 mm
- 14. Fujiyama Digital MC C-PL 72 mm
- 15. Heliopan ES Pol circ. Kasemann 72 mm
- 16. Heliopan ES Pol circ. SH-PMC 72 mm
- 17. Hoya PL-CIR 72 mm
- 18. Hoya HMC PL-CIR 72 mm
- 19. Hoya Pro1 Digital MC PL-C 72 mm
- 20. Hoya HMC Super PL-CIR 72 mm
- 21. Kenko PRO1D Wide Band C-PL(W) 72 mm
- 22. King Circular Polarizer 72 mm
- 23. Marumi DHG Circular P.L.D 72 mm
- 24. Marumi DHG Super Circular P.L.D 72 mm
- 25. Marumi MC C-P.L 72 mm
- 26. Marumi Wide MC C-P.L 72 mm
- 27. Marumi Water Proof Coat Circular P.L 72 mm
- 28. Sigma DG Wide Circular PL 72 mm
- 29. Tiffen Cir. Polarizer 72 mm
