Photography Asked by Debbie Crowe on July 20, 2021
I am have taken quite a few shots using an IR760 filter, 30 seconds or longer exposure, both raw and jpeg, strong sunshine, and my images do have the red tint when I view. I have tried every single post processing I can find including PS and LR, channel swap, mixer, white balance picker, etc and I simply cannot get the green trees to turn white. What am I doing wrong? Am I not setting the white balance before shooting correctly? Am I picking the wrong scenes? Scenes are mostly green trees, maybe farmland, barn, pond, assorted. The filter is ICE (Ice Optical Glass) IR760. Is it the filter? First one I ever bought and it had a good review but maybe I am doing everything wrong. Thank you for any advice. Debbie
Typical digital camera sensors natively respond to infrared and ultraviolet in addition to visible light.
Because this is not what most people want, a filter is placed in front of the sensor when the camera is built. It excludes infrared and ultraviolet frequencies. This type of bandpass filter is sometimes called a “hot mirror.”
To capture the infrared (or UV) spectrum the hot mirror bandpass filter must be removed. This requires camera disassembly.
Once the bandpass hot mirror has been removed, the sensor will be “full spectrum” and respond to UV, visible, and IR frequencies.
Sometimes an IR filter will be added back in place of the bandpass hot mirror that was removed. If not an IR filter can be used on the lens. Either way, the camera will then respond to infrared frequencies only, and provide the pictures we associate with IR photography.
Without removing the bandpass hot mirror, the camera will not respond to infrared.
There are many companies offering conversion services to make a camera work with infrared.
Depending on mechanical skill and patience, it might be possible to do the conversion yourself. There are videos on the internet for various camera models.
Answered by Bob Macaroni McStevens on July 20, 2021
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