Create an image of a vintage brass porthole with detailed rivets and a polished finish, shot with a DSLR camera at f/2.8 aperture, 50mm lens, ISO 100, from a straight-on view, with natural lighting to enhance reflections and textures.

Create a vibrant, cartoon-style illustration of a colorful submarine with a blue body, yellow underside, orange portholes, and a red propeller on a black background, captured with a DSLR camera at f/4 aperture, ISO 100, 50mm lens, and slight vignette effect for enhanced quality.