Final answer:
Resolution in digital imaging is determined by the number of pixels used to create the image. Factors such as wavelength and numerical aperture influence spatial resolution.
Step-by-step explanation:
Resolution in digital imaging is determined by the number of pixels used to create the image. The higher the pixel count, the greater the detail and sharpness of the image. Spatial resolution refers to the ability to distinguish between two separate points or objects in an image. It is influenced by factors such as wavelength and numerical aperture. Shorter wavelengths and higher numerical apertures result in higher spatial resolution.