I know, I know, it can be caused by various factors, like high ISO, poor lighting conditions, long exposure time, heat. (not that I know why the last two cause noise)

But where does noise REALLY come from? What is noise? What does it have to do with photons and photosites?

  • oldlurker114@alien.topBEnglish
    1·
    11 months ago

    And no… high ISO doesn’t cause noise, it just amplifies it.

    No it doesn’t.

    ISO setting is a lightness parameter. Adjusting it ajusts JPG lightnesss. This is very different from amplifying noise.

    Regarding raw files and the underlaying information, the sensor tries to capture - using a high ISO does not amplify noise. Instead it on typical camera slightly reduces the little noise that the analogue to digital convenrsion adds, and some cases also reduces the noise that the pixel adds.

    • VapingLawrence@alien.topBEnglish
      1·
      11 months ago

      I appreciate your input, but instead of misinterpreting Wikipedia articles you should learn how electronics actually work. :)