HOYA COLOR COMPENSATING FILTERS from Bes Optics, Inc. - Hoya color compensating filters control light in the blue, green, and red regions of the visible spectrum.


Hoya Color Compensating Filters

Hoya color compensating filters control light in the blue, green, and red regions of the visible spectrum. They include the cyan series which selectively absorb the red and near infrared and suffer no fading due to light sources, and magenta, that selectively absorbs the green region and are used for green color compensation.

Also included in this group are fluorescent color compensating filters. When photographing under white-type fluorescent lights using daylight-type color film, greenish pictures result. Under daylight-type fluorescent lights bluish hues develop. This is only due to the spectral energy distribution, which differs from that of natural light, but also the existence of characteristic line spectra.

FL-D60 and FL-W85 are filters that provide pictures with good color reproduction. These filters have been designed in consideration of spectral energy distribution of fluorescent lights, and the former is suited for color compensation with daylight-type fluorescent light, and the latter for color compensation with white type fluorescent light.


	Cyan

Glass type	Highest transmittance wavelength	Use	Catalog thickness
CC-500	500 nm	Photo sensitizer correction	1.0 mm
CL-500	500 nm	Photo sensitizer correction	1.0 mm
CAW-500	500 nm	Photo sensitizer correction	1.0 mm
C-500S	500 nm	Photo sensitizer correction	1.0 mm
CM-500S	500 nm	Photo sensitizer correction	1.0 mm
CN-500	500 nm	Photo sensitizer correction	1.0 mm
C-5000	500 nm	Photo sensitizer correction	1.0 mm

Magenta

Glass type	Transmittance at absorption peak	Use	Catalog thickness
M-10	10%	Color correction	2.5 mm
M-30	30%	Color correction	2.5 mm
M-50	50%	Color correction	2.5 mm


	Fluorescent

Glass type	Transmittance at absorption peak	Use	Catalog thickness
FL-D60	60%	Daylight fluorescent lamp	2.5 mm
FL-W85	85%	White type fluorescent lamp	2.5 mm


	Below are approximate spectral curves for the above filters


	For more information or prices on Hoya color filters please contact us.


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