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Oh yeah. I realised this the day I discovered my fancy digital SLR was a thermometer: https://entropicthoughts.com/does-my-dslr-have-dead-pixels

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glitchc 3 days ago | parent | next [-]

Yup, it's called dark noise. Random generation of electrpns which sometimes find their way into the depletion region.

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djmips 3 days ago | parent | prev [-]

A lot of people like myself consider heat a form of light but I guess a photographer would be just thinking visible light. They say that about 50% of the sun's light emissions comes in the infrared frequencies.

	▲	kqr 3 days ago \| parent \| next [-]
		That seems like a mistake since heat can transfer e.g. via contact without any electromagnetic emission. In fact, that is what I think happens with the sensor also, given that there is an IR filter in front of it. But I may misunderstand your comment.
	▲	pletnes 2 days ago \| parent \| prev [-]
		Visible light from the sun, or incandescent lights, is also emitted due to heat. Planck’s law is the mathematical relation if you want to know more.