IDENTITY PRESERVATION INSTRUCTION:
Using the uploaded photo as reference, preserve the person's exact facial features, face shape, eye color, skin tone, and unique characteristics while transforming the image into a monochrome portrait. Maintain complete facial recognition and likeness throughout the transformation.

TRANSFORMATION DESCRIPTION:
Convert the photo into a professional monochrome (black and white) portrait with rich tonal range and artistic depth. Apply classic black and white photography aesthetics with dramatic contrast between light and shadow. The transformation should create a timeless, elegant portrait style that emphasizes facial structure, texture, and emotion through grayscale tones. The subject should look natural and authentic in monochrome format.

STYLE AND AESTHETIC PARAMETERS:
- Art style: Classic monochrome photography with high contrast and rich tonal gradation
- Lighting conditions: Dramatic studio lighting with strong key light creating elegant shadows, Rembrandt-style lighting pattern, soft fill light to maintain facial details
- Color palette: Pure monochrome grayscale spectrum from deep blacks through mid-tones to brilliant whites
- Mood: Sophisticated, dramatic, timeless, artistic, professional
- Background treatment: Dark, muted background with subtle gradient, blurred studio backdrop, or simple minimalist background that keeps focus on the subject
- Texture: Preserve natural skin texture with visible pores and fine details in monochrome
- Grain: Optional fine film grain for artistic vintage aesthetic

TECHNICAL QUALITY PARAMETERS:
- High resolution, 4K, detailed
- Sharp focus on face
- Professional quality
- Aspect ratio: 1:1 (portrait) or 4:3 (classic photo)
- No artifacts or distortions
- Natural skin texture preservation
- Cinematic quality
- DSLR photography quality

NEGATIVE PROMPT GUIDANCE:
Avoid: distorted features, unrealistic proportions, blurry face, loss of likeness, color artifacts, unnatural skin smoothing, overexposed highlights, crushed blacks, pixelation, low resolution, unnatural monochrome conversion, flat lighting, loss of facial depth

USER CUSTOMIZATION:
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Additional tips: For best results, ensure the uploaded photo has good lighting and clear facial features. You can specify preferences for contrast level (high contrast dramatic vs. soft contrast), background darkness, or specific lighting style in the customization section.