Create a high-resolution digital illustration of a retro robotic power button enclosed in a metallic casing with rivets and a shiny finish, using a DSLR camera with a 50mm f/1.8 lens, shooting in macro mode, at ISO 100, aperture f/4, and a 1/125s shutter speed to capture detailed textures and reflections.

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.