40.5mm 650nm+680nm+720nm Infrared IR Optical Grade Filter for Camera Lenses

Description

Item specifics:
Condition:
New:  A brand-new, unused, unopened, undamaged item in its original packaging
Brand: ROCOLAX
Filter Effects:  Infrared
Lens Material:  Germanium Optical Glass
Ring Material:  Aero Magnalium
Filter Coated: N/A
Shape: Circular
Packing List:  Optical Grade Infrared Filter X 3
What's so different about infrared filter?
Infrared filters, sometimes called IR filters or heat-absorbing filters, are designed to allow IR mid-infrared wavelengths while block visible light. They are often used in devices with bright incandescent light bulbs (such as slide and overhead projectors) to prevent unwanted heating.
There are also filters which are used in solid state (CCD or CMOS) video cameras to allow IR due to the high sensitivity of many camera sensors to near-infrared light. These filters typically have a blue hue to them as they also sometimes block some of the light from the shorter visible light and UV wavelengths.
In which ways the infrared filter will be used?
1.Archaeology, Military,Police,Medical science,and detective work. Infrared filter allow normally invisible stains and modified items visible.
2.Plant vegetation & Landscape photography. It looks dramatically different when photographed in Infrared.
3.Photographic special effects.Infrared filters give the still and video photographer expressive and unusual effects.
In what suitable light source should I use the infrared filters?
590nm:
680nm:
720nm:
850nm:
590nm, 600nm and 630nm
for Infrared change machine. The rich colors, custom white balance, the original film in general the sky was bright red, partial brown or amber, plant leaves, blue, sky blue saturation after post-processing, the leaves yellow or golden yellow.
680nm
for indoor and weak Shadows use.
720nm
for indoor and weak light use.
760nm
for cloudy outdoor at nightfall and brightness indoor.
850nm
for indoor and weak cloudy outdoor light.
950nm
for outdoor and strong light,such as summer time.
1000nm
for low latitudes and strong reflective light ,such as on the beach by noon time.
What filter thread sizes will you have ? And wavelength ?
We have 590nm, 600nm, 630nm, 650nm,680nm,720nm,760nm,850nm,950nm and 1000nm wavelengths in regular sizes in
25mm,27mm,28mm,30mm,30.5mm,34mm,37mm,39mm,38.1mm,40.5mm,43mm,46mm,49mm,52mm,55mm,58mm,60mm,62mm,67mm,72mm,74mm.77mm and 82mm.