After capturing an image in Portrait Mode, what specific on-device adjustment allows for precise refinement of the background blur's intensity?

The specific on-device adjustment for precise refinement of the background blur's intensity after capturing an image in Portrait Mode is accessed through the photo's editing interface. Within this interface, a dedicated control, commonly presented as a slider or a virtual aperture setting, allows the user to modify the simulated depth of field. Portrait Mode is a camera feature that utilizes computational photography to create an image with a shallow depth of field, meaning the main subject is kept sharp and in focus while the background is intentionally blurred. This artistic blurring of the background is known as bokeh. The slider, or virtual aperture control, empowers the user to precisely increase or decrease the strength of this background blur. For example, adjusting the setting to simulate a wider aperture, which is represented by a smaller f-number like f/1.4, will intensify the background blur, creating a more pronounced separation between the subject and the background. Conversely, adjusting it to simulate a narrower aperture, represented by a larger f-number such as f/4.5, will reduce the background blur, allowing more of the background elements to appear in relative focus. This post-capture adjustment provides the flexibility to fine-tune the visual impact of the image.