Epic cinematic 8k wallpaper of Ellen Ripley, her face a mix of resolve and fear, from the movie Alien, in a sleek tactical tank top instead of a wife beater, captured in a wide-angle, dynamic half-body pose. Sweat glistens on her forehead and cheeks, as her back is pressed firmly against the metallic walls of the Nostromo space shuttle. The scene is set in a dimly lit, claustrophobic room, infused with sci-fi ambiance, enhanced by realistic ray tracing and rim lighting. The composition is ultra-detailed and central, exuding cinematic movie quality with a mood that's both stoic and intense. Lumen reflections play across her determined expression, emphasizing the high contrast and ambient lighting in 4k, akin to a high-fashion photo shoot with a touch of Rembrandt lighting. Shallow focus and realistic shadows highlight the scene, rendered with RTX ray tracing in ultra-realistic octane render, brought to life in stunning 8k.