Louis Pasteur

masterpiece, best quality, 4k, illustration, ((portrait of Louis Pasteur)), (19th-century microbiologist), (softly lit laboratory), (glass flasks), (scientific instruments), (germ theory), (mid-50s), (thoughtful expression), deep-set eyes, (intelligence), (determination), slightly tousled hair, gray strands, (dark tailored suit), crisp white shirt, black tie, professionalism, approachability, warm golden light, antique lamp, gentle shadows, face texture, wooden surfaces, (famous experiments in background), (reverence), (curiosity), (scientific pioneer)

low quality, blurry, out of focus, overly dark, overly bright, unnatural colors, modern clothing, cluttered background, lack of detail, exaggerated features, harsh shadows, absence of scientific elements