Filter Curves

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X-Nite Filters are precision made, quality filters. Listed are various specifications.

Infrared Filters (Infrared Pass / Visual Light Blocking)

Filter Type	Cutoff 50% (nm)	Limit Passband (nm), %
X-Nite630	630 nm	690nm, >-= 91%
X-Nite665	665 nm	730nm, >= 91%
X-Nite715	715 nm	780 nm, >= 99%
X-Nite780	780 nm	830 nm, >= 99%
X-Nite830	830 nm	900 nm, >= 99%
X-Nite850	850 nm	1100 nm, >= 99%
X-Nite1000	1000 nm	1300 nm, >= 90%
X-NiteXDP	Wideband	Dual Profile

	5% Low Cut	50% Low Cut	50% High Cut	5% High Cut
XNiteBPB	650nm	662nm	753nm	787nm
XNiteBPG	735nm	795nm	860nm	935nm
XNiteBPR	888nm	921nm	958nm	1000nm

	Glass Type : Precision Ground
	Material Thickness: 3mm
	Surface Quality: 80-50
	Visual Color: 630nm & 665nm Red, Others are Black
	Range: High Red to Infrared
	Construction: Two-piece metal rings and glass

Infrared Blocking / Visual Light Pass Filter

Filter Type	Center Wavelength	50% Transmission
X-NiteCC1	483nm	325nm, 645nm
X-NiteCC2	500nm	315nm, 730nm

Ultraviolet Pass / Visual Light Blocking Filter

Filter Type	Center Wavelength	50% Transmission
X-Nite330	330nm	270nm, 375nm, 50%

330nm Filter Bandpass BP1 Filter

Infrared Color Band Pass Series

CCD and CMOS image sensors only see black and white. In order for the camera to see color, small color filters are printed on top of the image sensors. These filters are typically arranged in a Bayer pattern.

Below is the typical response curve for CCD and CMOS image sensors. The top dark blue channel shows the quantum efficiency of an unfiltered image sensor. The Red, Green and Blue traces show the transmission response after the light passes through the mosaic color filter over the image sensors.

When we convert a camera to see IR+Visible or IR-Only, the majority of the infrared data will come in on the red channel. Interestingly, the blue and green channels will see some infrared but will be much lower than the red channel.

Other Glass Equivalents:

Kaya PF4 is 780nm
Kaya PF2 is 830nm
Kaya PF1 & PF3a is 1000nm

Hoya RM72 is 720nm
Hoya RM90 is 900nm
Hoya RM100 is 1000nm

M&K #078 is 780nm
M&K #093 is 830nm
M&K #095 is 850nm
M&K 1000 is 1000nm

Wratten 18A is 350nm
Wratten 29 is 620nm
Wratten 70 is 675nm
Wratten 89B is 720nm
Wratten 88 is 735nm
Wratten 88A is 750nm
Wratten 87 is 795nm
Wratten 87C is 850nm
Wratten 87B is 930nm
Wratten 87A is 1000nm

Heliopan filters use Schott glass indicated by the RG number. For example, RG830 = 830nm and RG1000=1000nm.

Send mail to [email protected] with questions or comments about this web site. Last modified: June 18, 2015

Send mail to [email protected] with questions or comments about this web site.
Last modified: June 18, 2015