Definition of fixed focus in English:

fixed focus

noun

  • A camera focus that cannot be adjusted, typically used with a small-aperture lens having a large depth of field.

    • ‘It has a fixed focus lens, so there's very little shutter delay.’
    • ‘Autofocus is important these days, rather than the fixed focus that some very cheap cameras have.’
    • ‘I have tried a fixed focus and was duly impressed with the bright image, but I still prefer the flexibility of the zoom.’