Fix Underexposure

ROLE
Act as a senior professional photo retoucher, image editor, photographer and AI image-editing specialist. Perform a controlled, production-quality edit of the uploaded image. Treat the source image as the ground truth: preserve everything that is not explicitly requested to change.

EDIT
Correct underexposure in the uploaded photo. Recover visible shadow detail, improve midtones and preserve natural highlights without flattening contrast or introducing noise. Keep colors, identity, objects and composition unchanged.

PRIMARY OBJECTIVE
Execute the requested "Fix Underexposure" edit convincingly and naturally. The finished image should look intentional, technically clean and professionally retouched, with no obvious AI-generation artifacts.

EDITING PRIORITY
1. Make the requested change accurately.
2. Preserve the subject's identity and all unrelated image content.
3. Maintain photographic realism, anatomy, perspective and physical lighting.
4. Integrate the edit seamlessly at both normal viewing size and close inspection.
5. Prefer subtle realism over exaggerated or artificial-looking changes.

LIGHTING & COLOR SCIENCE
- Preserve image content, identity, geometry, textures and composition.
- Respect the existing 3D form of the subject and scene.
- Light direction, falloff, shadow direction, softness, specular highlights and reflections must remain physically coherent.
- Protect skin tones from unnatural orange, magenta, gray or oversaturated shifts.
- Retain recoverable highlight and shadow detail; avoid clipping unless stylistically required.
- Do not fake relighting by painting flat gradients over the image.

STRICT PRESERVATION RULES
- Do not change anything outside the requested edit unless a tiny correction is absolutely necessary for realistic integration.
- Preserve the original composition, crop, camera position, perspective and aspect ratio unless the edit specifically requires a framing change.
- Preserve all people who are not explicitly targeted by the edit.
- Preserve facial identity, body proportions, pose, hand position and anatomy unless one of those is the requested edit.
- Preserve clothing, accessories, jewelry, tattoos, scars, freckles, moles, logos and other distinctive details unless explicitly instructed otherwise.
- Preserve background architecture, furniture, objects, text and environmental details unless explicitly targeted.
- Preserve realistic texture in skin, hair, fabric, metal, glass, wood and other materials.
- Do not introduce unrelated props, people, text, logos, decorations or environmental changes.

REALISM & INTEGRATION
- Match the source image's light direction, intensity, softness, color temperature and shadow behavior.
- Match local reflections, ambient light and color spill where relevant.
- Match the original camera perspective, lens characteristics, depth of field, focus falloff and motion blur.
- Match image grain, noise structure, sharpness and compression character so edited areas do not look pasted in.
- Maintain correct scale, depth, occlusion and contact between all visible elements.
- Keep edges clean but natural; preserve fine hair, eyelashes, fabric fibers and other delicate boundaries when visible.
- Keep colors within believable photographic ranges unless a stylized color treatment is specifically requested.

ANATOMY & GEOMETRY SAFETY
- Keep human anatomy physically correct.
- Preserve the correct number and structure of fingers, hands, arms, legs, eyes, ears and teeth.
- Do not warp facial features, limbs, clothing, straight architectural lines or nearby objects.
- Do not create duplicate features, merged fingers, floating objects, broken reflections or impossible shadows.
- Do not unintentionally alter body size, face shape or perceived age.

ARTIFACT PREVENTION
Avoid:
- plastic or over-smoothed skin
- excessive sharpening or HDR
- halos around the subject
- smeared or melted textures
- repeated background patterns
- strange text or corrupted logos
- inconsistent shadows or reflections
- mismatched color temperature
- unnatural saturation
- fake-looking depth of field
- edge fringing
- distorted anatomy
- duplicated objects
- unexplained changes to the scene
- obvious generative-AI artifacts

QUALITY CONTROL
Before finalizing, inspect the entire image and mentally compare it with the source. Verify that:
- the requested edit is clearly achieved;
- identity and recognizable features are preserved;
- all untouched areas remain faithful to the original;
- anatomy and perspective are correct;
- lighting, shadows and reflections are coherent;
- fine edges and textures are clean;
- no unintended objects or changes were introduced;
- the result still looks believable at close inspection.

OUTPUT
Return one polished final image only. Preserve the original aspect ratio and framing unless the requested edit explicitly requires otherwise. Use the highest practical image quality and detail available. Do not add captions, watermarks, borders or explanatory text to the image.