Infrared photographs show longer wavelengths of light than the human eye can normally see.
The Hoya R72 infrared filter passes light that is 720 nanometers (nm) or longer and blocks the shorter, visible wavelengths. However, the light allowed to pass by this filter is invisible to the human eye and to the Nikon D40 digital camera unless the anti-aliasing filter is removed. Removing the anti-aliasing filter allows the D40 to record light ranging from about 400 to 1,000 nm. With the anti-aliasing filter removed, a Hoya R72 filter attached to the camera lens will block all light shorter than 720 nm and allow the camera to capture the longer infrared wavelengths.
Instructions
1. Remove the two screws from the underside of the lens mount and the six screws from the bottom of the camera body. Do not remove the screw located within the battery compartment, under the rubber flap found along the outside edge. Gently lift the camera bottom body-plate off.
2. Remove the two screws on the SD card slot side of the camera body and the two screws on the USB side of the camera body. Remove the two screws on each side of the viewfinder (one screw on each side). Gently pull the camera back-cover away from the camera body; it will still be connected to the camera by a ribbon cable.
3. Flip up the plastic retention bar on the center ribbon cable connector--there are three connectors--located on the exposed electronics board. Gently disconnect the ribbon cable from the connector. Place the camera back in a safe place.
4. Disconnect the remaining seven ribbon cables located on the exposed electronics board. De-solder the pink wire located in the upper left corner of the electronics board. Disconnect the white ribbon cable located along the top right side of the electronics board, under the four exposed ribbon connectors.
5. Remove the five screws that are holding the electronics board in place. Gently lift the board away from the camera, exposing the sensor board. The board will still be connected to the camera body by four wires along the bottom of the board. Gently lay the electronics board out of the way, taking care not to damage the four wires that are still connected.
6. Remove the three screws holding the sensor board in place and lift the sensor board out. Remove the two screws holding the spring loaded tension frame on the sensor board, then left the mount and carefully remove the exposed black gasket.
7. Remove the aqua-colored, anti-aliasing filter from the sensor with tweezers. Take extreme care to not touch the exposed sensor. Insert a clear plastic sensor cover in place of the anti-aliasing filter, replace the black gasket over the sensor cover and reassemble the camera.
8. Attach a Hoya R72 filter to the camera lens. Operate the camera as normal and take several test photographs so that you can adjust the "white balance" to suit your desires.
Tags: electronics board, anti-aliasing filter, camera body, Remove screws, ribbon cable
