Focos is a photography-focused application designed to enhance the capabilities of smartphone cameras by introducing DSLR-like features. Primarily known for its advanced depth-of-field effects, Focos enables users to apply professional-quality bokeh to their photos. Apart from offering the ability to change the aperture size post-capture, it also provides numerous tools for depth map editing to refine the focus and background of images. Available on iOS, Focos caters to both amateur photographers and professionals aiming to leverage sophisticated camera techniques directly from their devices.