Virtual Aperture is a feature that simulates different camera apertures, allowing users to adjust the look of their photos. It can be added to older devices like the Galaxy S25, S25+, and S25 Ultra through an update instead of needing new hardware. Samsung already offers this feature on its newer phones, but now it might come to existing models as well.
Source: https://www.yugatech.com/tag/samsung-virtual-aperture