✨ 10 Best 4K AI Prompts for Upscaling & Photo Restoration

{ "task": "image_restoration_upscale", "positive_prompt":
"Restore and enhance the provided image. Preserve original identity, facial structure, proportions and composition. High-fidelity photo restoration, ultra-realistic, natural skin texture, accurate details, professional photographic look. 4K output, sharp but natural focus, modern cinematic lighting, subtle volumetric lighting, professional color grading, depth of field, HDR. Shot on Arri Alexa, raw photo aesthetic, masterpiece.",
"negative_prompt": "Creative reinterpretation, style change, identity alteration, face reshaping, exaggerated features, cartoonish, painting, illustration, over-sharpening, plastic skin, blur, noise, film grain, jpeg artifacts, distortion, bad anatomy, overexposed, underexposed, washed out colors.", "parameters":
{ "steps": 30, "cfg_scale": 6.5, "denoising_strength": 0.45,
"upscaler": "4x_NMKD_Siax_200k", "target_resolution": "4K" } }

Upscale the uploaded image to 4K resolution, preserving 100 % character consistency, original facial features, clothing details, and scene composition. Maintain original lighting, texture, and fine details such as hair strands, fabric texture, reflections, and shadows. Apply high-quality upscaling with sharp but natural edges, no distortions, and minimal AI artifacts. Keep the character’s identity, proportions, and expressions unchanged. Enhance clarity in skin texture, eyes, and background elements while preserving the original color palette and artistic style. Output a crisp, highly detailed, ultra-high-resolution image suitable for print and professional display.

{ "task": "image_restoration_upscale", "positive_prompt":
"Restore and enhance the provided image. Preserve original identity, facial structure, proportions and composition. High-fidelity photo restoration, ultra-realistic, natural skin texture, accurate details, professional photographic look. 4K output, sharp but natural focus, modern cinematic lighting, subtle volumetric lighting, professional color grading, depth of field, HDR. Shot on Arri Alexa, raw photo aesthetic, masterpiece.",
"negative_prompt": "Creative reinterpretation, style change, identity alteration, face reshaping, exaggerated features, cartoonish, painting, illustration, over-sharpening, plastic skin, blur, noise, film grain, jpeg artifacts, distortion, bad anatomy, overexposed, underexposed, washed out colors.", "parameters":
{ "steps": 30, "cfg_scale": 6.5, "denoising_strength": 0.45,
"upscaler": "4x_NMKD_Siax_200k", "target_resolution": "4K" } }

{ "task": "{argument name="task" default="image_restoration_upscale"}", "positive_prompt":
"Restore and enhance the provided image. Preserve original identity, facial structure, proportions and composition. High-fidelity photo restoration, ultra-realistic, natural skin texture, accurate details, professional photographic look. {argument name="resolution" default="4K"} output, sharp but natural focus, modern cinematic lighting, subtle volumetric lighting, professional color grading, depth of field, HDR. Shot on Arri Alexa, raw photo aesthetic, masterpiece.",
"negative_prompt": "Creative reinterpretation, style change, identity alteration, face reshaping, exaggerated features, cartoonish, painting, illustration, over-sharpening, plastic skin, blur, noise, film grain, jpeg artifacts, distortion, bad anatomy, overexposed, underexposed, washed out colors.", "parameters":
{ "steps": 30, "cfg_scale": 6.5, "denoising_strength": 0.45,
"upscaler": "4x_NMKD_Siax_200k", "target_resolution": "4K" } }

保持原图尺寸比例，使用专业照片修复技术，将这张图像超分辨率放大并修复至{argument name="分辨率" default="4K超高清（3840x2160）"}。去除模糊、噪点、划痕、污渍、折痕、压缩失真，恢复并增强皮肤纹理、毛孔、头发丝、布料质感、边缘锐利度。恢复自然真实色彩、准确光影和深度，生成如同{argument name="相机风格" default="专业DSLR相机"}拍摄的照片质感，保持原图所有内容、构图和风格完全不变，极致真实无艺术化，使其成为晶莹剔透的高清照片，保持100%原构图和真实感。

"Restore this old photo into professional portrait of DLSR - quality colour and detail, using an advanced upscaling algorithm comparable to the results from canon EOS R6 II. Ensure the restored the image looks natural, retains exact facial features, has great clarity......."

"Restore this old photo into professional portrait of DLSR - quality colour and detail, using an advanced upscaling algorithm comparable to the results from canon EOS R6 II. Ensure the restored the image looks natural, retains exact facial features, has great clarity.”

"Restore this old photo into professional portrait of DLSR - quality colour and detail, using an advanced upscaling algorithm comparable to the results from {argument name="camera model" default="canon EOS R6 II"}. Ensure the restored the image looks natural, retains exact facial features, has great clarity..."

Upscale the character in the first image to the resolution level  and extreme close-up enough to clearly see the skin texture of the character.

Restore this old damaged photo without changing any details, 4K