Epic cinematic 8k wallpaper featuring Ellen Ripley from the Alien movie, embodying determination with her resolute and serious expression. She is clad in a white worn and gritty tank top. The atmosphere is charged with action; capturing a half-body shot at a wide angle. Sweat beads on her forehead and cheeks are highlighted in this close-up. The image is photorealistic, boasting cinematic quality with advanced VFX post-production techniques. The lighting is enhanced with RTX ray tracing, delivering ultra-realistic and hyper-detailed visual fidelity. Shot in 4k, upgraded to 8k using a Mitchell BNC camera, with Octane render to ensure an immersive high-definition HDR experience.