Naked Science Forum

Non Life Sciences => Technology => Topic started by: nudephil on 05/05/2020 16:42:39

Title: Could infrared light emitters interfere with digital camera pictures?
Post by: nudephil on 05/05/2020 16:42:39

George sent us this:

It's well known that if you point an infrared remote at a digital camera that you can see the infrared pulses on the camera. Are there other sources of IR that can interfere with what is captured?

Does anyone know?

Title: Re: Could infrared light emitters interfere with digital camera pictures?
Post by: evan_au on 05/05/2020 23:30:43

The silicon sensors in most digital cameras have a response that extends well into the infra-red.
- Pointing a camera at the Sun can interfere with the clarity of images.
- At one time there was a scandal in Australia, as some cheap cameras had an extended infra-red response, and it turned out that many types of swimwear were quite transparent at infra-red wavelengths....
- These days, the main camera on your smartphone has a filter to reduce the impact of infra-red light