Description:

The infrared filter is used to block visible light, only through infrared ray, take pictures out like black and white photos, but has a unique color again.
This IR filter can block all visible light under 720 nm. Infrared film is also sensitive to ultraviolet rays and the shorter wavelengths of the visible spectrum so it is necessary to filter out all but the infrared rays.
Infrared filter often used in crime detection, medical photography, detection of distribution of vegetation, etc. For photographer, this filter can be used with infrared film or digital photography to get interesting artistic and sometimes photos.

You need to know:

1000nm is suitable for low latitudes and strong light use.
950nm is suitable for outdoor and strong light use.
850nm is suitable for outdoor and not too strong light use.
760nm is suitable for indoor and weak light use.
720nm is suitable for indoor and weak light use.

680nm : Scenery photo is most suitable for 680nm infrared filter, infrared scene showing a normal color under different style, like a dream, even under the most common scene in infrared and artistic

720nm : Mainly for no function of infrared digital camera (or infrared camera outside shooting model), the effect of infrared and visible light colors coexist, with some shooting skills and post-processing, half a red effect can be obtained

760nm : In theory, there is a color, in fact, the color is very shallow, is almost black and white, in the sunshine outdoor is better to compare high contrast can be obtained when using pure infrared photo

850nm : When the weather is good, the sky knows, can get high contrast images, have better penetration to haze, apply to the environment of the infrared ray is not too strong

Note: Infrared photography must change machine or camera itself has no ICF, but now most cameras have infrared cut-off (ICF), so if you wanna use the IR Filt