IR (Non-Thermal) Modified Camera
- Thread starter Leifer
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From the same reference:
I couldn't find precise data about wavelengths. The non-IR version uses a CMOS device, which are usually based on Silicon (sensitive to visible and near IR up to ~1 micron in wavelength)External Quote:
A typical Fujifilm X or GFX Series camera includes an infrared-cut, or IR-cut, filter in front of its image sensor. This ensures that images look "right," and are sharp with accurate color rendering. Thanks to the IR-cut filter, a standard Fujifilm digital camera sensor is exposed to visible light, ranging in wavelength from approximately 380 to 780 nanometers. Infrared light, which has wavelengths beyond 780 nanometers, is prevented from reaching the image sensor by the IR-cut filter.
The GFX100II IR and X-H2 IR models ditch this sensor, enabling them to capture infrared wavelengths of light. This is useful for very specific applications.
https://www.fujifilm-x.com/global/products/cameras/x-h2/specifications/
It seems like the cameras are sensitive to near IR by changing the filters before the sensors, tailoring the sensor sensitivity, or both.External Quote:
Ravi
Senior Member.
Correct. These filters (IR cut) are in every consumer camera. I even removed a few myself in the past, to be able to detect 1064nm laser signals (with Basler CCD).From the same reference:
I couldn't find precise data about wavelengths. The non-IR version uses a CMOS device, which are usually based on Silicon (sensitive to visible and near IR up to ~1 micron in wavelength)External Quote:
A typical Fujifilm X or GFX Series camera includes an infrared-cut, or IR-cut, filter in front of its image sensor. This ensures that images look "right," and are sharp with accurate color rendering. Thanks to the IR-cut filter, a standard Fujifilm digital camera sensor is exposed to visible light, ranging in wavelength from approximately 380 to 780 nanometers. Infrared light, which has wavelengths beyond 780 nanometers, is prevented from reaching the image sensor by the IR-cut filter.
The GFX100II IR and X-H2 IR models ditch this sensor, enabling them to capture infrared wavelengths of light. This is useful for very specific applications.
https://www.fujifilm-x.com/global/products/cameras/x-h2/specifications/
It seems like the cameras are sensitive to near IR by changing the filters before the sensors, tailoring the sensor sensitivity, or both.External Quote:
elvenwear
Senior Member.
You can usually find better data on sensitivity (quantum efficiency) at specific wavelengths of cameras designed for astronomical telescopes. I'm not sure they'd suit your purposes as they are not designed to be used during the day.
elvenwear
Senior Member.
I wonder if you may also have removed the UV filter as well.
Did you have to select specific lenses with glasses chosen to pass IR, or was the laser so strong the point was moot?
I've split this thread here, as these IR cameras are near-IR, and not the thermal cameras being discussed.
I've also removed a couple of those filters, on a little Canon, and on my P900, for which I made a tutorial based on someone's video.
https://www.metabunk.org/threads/co...-ir-full-spectrum-the-definitive-guide.10548/
I've also removed a couple of those filters, on a little Canon, and on my P900, for which I made a tutorial based on someone's video.
https://www.metabunk.org/threads/co...-ir-full-spectrum-the-definitive-guide.10548/
I don't think it's anything other than not including the filter.
Ravi
Senior Member.
It is been a long time, I recall it had a quartz element objective. But it was all laserbeam breadboarding work, so no imaging going on.
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