Trong thời đại AI bùng nổ, việc tạo ra hình ảnh đẹp, độc đáo chỉ bằng vài dòng chữ không còn là điều xa lạ. Gemini AI – công cụ mạnh mẽ từ Google – đang trở thành lựa chọn hàng đầu cho những ai muốn sáng tạo hình ảnh chất lượng cao mà không cần kỹ năng thiết kế. Bí quyết nằm ở Prompt: những câu lệnh mô tả chi tiết giúp AI hiểu và tạo ra hình ảnh đúng ý bạn.
Trong bài viết này, chúng ta sẽ khám phá cách viết Prompt hiệu quả trên Gemini, kèm theo mẫu câu lệnh hot nhất 2025 để bạn dễ dàng bắt kịp xu hướng và tạo ra những bức ảnh ấn tượng cho mạng xã hội, website hay dự án cá nhân.
Hướng dẫn tạo ảnh bằng Gemini: từng bước cho người mới
Bước 1 – Truy cập: mở Gemini trên web/app → đăng nhập.
Bước 2 – Tải ảnh tham chiếu: chọn ảnh chân dung rõ mặt, ánh sáng đều.
Bước 3 – Nhập prompt: mô tả chi tiết theo 4 thành phần ở trên.
Bước 4 – Rerun & tinh chỉnh: nếu chưa ưng ý, thử “rerun” hoặc thêm yêu cầu chỉnh sửa (nền, trang phục, ánh sáng).
Bước 5 – Tải ảnh: chọn phiên bản tốt nhất, tải về dùng làm avatar/ảnh hồ sơ.
Các bài hướng dẫn thực tế khuyến nghị thử nhiều lần vì mỗi lần AI có thể tạo phiên bản khác nhau; đồng thời nêu rõ cách thay đổi chi tiết sau khi có ảnh đầu tiên (ví dụ: đổi màu áo, tối nền).
Tạo ảnh với chủ đề thập niên 20
Prompt: A hyper-realistic portrait of a 25-year-old woman, face taken from the original photo, with a short bob flapper hairstyle and bold red lipstick. Wearing a beaded silk flapper dress, set in the background of a 1920s jazz bar. Captured with Fujifilm GFX 100S, Art Deco style, ultra-detailed skin texture, 8K resolution, low chandelier lighting, classic black-and-white tones, vintage cinematic atmosphere.
Prompt: A hyper-realistic portrait of a 20-year-old man, face taken from the original photo, with sharp facial features and confident eyes. Male, short stylish haircut, wearing an elegant suit, set in a modern coffee shop background. Captured with Leica M11, ultra-detailed skin texture, 8K resolution, natural soft lighting, warm cinematic tones, modern style, shallow depth of field, smooth bokeh background.
Prompt: A hyper-realistic portrait of a young Vietnamese man in the late feudal era, around 20–30 years old. Wearing a traditional black áo dài the with long flowing panels, paired with wide white trousers, face taken from the original photo. His head is covered with a traditional khăn đóng (Vietnamese turban), neatly wrapped. He is seated on a wooden chair beside a carved wooden table with books stacked on top, suggesting the image of a scholar. Captured in a classic studio setting with a dark curtain background. 8K resolution, documentary historical photography style, sepia tones, authentic 19th-century atmosphere.
Prompt: A hyper-realistic portrait of a 70-year-old Asian woman, face taken from the original photo, with a gentle smile and big round eyes. Hair in a high bun, wearing a traditional Vietnamese áo dài, set against the background of Saigon streets in the 1990s. Captured with Fujifilm GFX 100S, styled in the manner of Annie Leibovitz, ultra-detailed skin texture, 8K resolution, natural soft lighting, warm cinematic tones, nostalgic atmosphere, shallow depth of field, smooth bokeh background.
Prompt: A hyper-realistic portrait of an elderly Asian gentleman, around 80-year-old, handsome and dignified, with elegant wrinkles and kind eyes, face taken from the original photo. Wearing a well-tailored classic suit, neat hairstyle with silver hair, confident and graceful expression, set against the background of Saigon streets in the 1990s. Captured with Fujifilm GFX 100S, styled in the manner of Annie Leibovitz, ultra-detailed skin texture, 8K resolution, natural soft lighting, warm cinematic tones, nostalgic atmosphere, shallow depth of field, smooth bokeh background.
Tạo ảnh phong cách hiện đại, thanh lịch
Prompt: Vertical portrait, 1080×1920. Keep the same facial features. Subject wearing a black blazer. Stark cinematic lighting with strong contrast.
Shot from a slightly low, upward angle to emphasize jawline and neck, evoking quiet dominance and sculptural elegance. Deep, saturated crimson red background for bold contrast against luminous skin and dark wardrobe.
Prompt: Transform the reference image into a vertical portrait shot in 1080×1920 format, maintaining the exact same facial features (do not alter the face). Convert the photo to black and white with dramatic studio lighting and deep shadows to create a bold, fashion editorial look. The subject is wearing a sleek black suit, with natural-style makeup tones that enhance facial details subtly. Hair is styled in a loose, low updo for a chic and modern feel. Shot with an 85mm portrait lens, shallow depth of field, ultra sharp facial details, smooth skin texture, soft gradient background blur.
Lighting should mimic high-end studio photography with contrast and mood, evoking a magazine editorial aesthetic.
Clean, stylish, elegant, and powerful.
Prompt: A hyper-realistic black-and-white studio portrait of the same woman in the uploaded personal photo. Keep her actual face and features exactly the same without any changes. She is sitting on a simple round stool, leaning slightly forward with her elbow resting on her knee, her head tilted and supported gently by her hand. She has a calm, soft expression. She is wearing a fitted sleeveless white ribbed tank top and high-waist denim jeans with stitched lettering detail.
Prompt: Edit the photo into a leisurely stand inside a modern-style elevator with reflective metal walls.he uses an all-black outfit: an oversize blazer and a long clana using sunglasses, and holding a cup of take-away. elegant and edgy style style with mysterious shades of dim lighting from the ceiling fluorescent lights creates a subtle shadow.
Tạo ảnh phong cách chân dung
Prompt: A beautiful young woman with porcelain skin and large doll-like eyes posing elegantly against a plain gray studio background. She has sleek black hair neatly tied back, with a few strands framing her face. She wears a simple strapless black dress that emphasizes her graceful shoulders and neckline. She rests her face gently on one hand, giving a refined and ethereal expression. Editorial beauty photography, soft studio lighting, highly detailed, sharp focus, flawless skin, masterpiece, elegant and minimal aesthetic. Make the first photo as basis for the face and do not change the facial structure so that it will look the first photo i uploaded
Prompt: Create a photo of me, see the reference photo in a a high-fashion studio same skin in the photo and long messy black hair. She wears a black oversized blazer layered over a white tube top, with a sheer white ribbon tied in a bow around her neck. She poses with her head tilted slightly to the side, gazing softly at the camera with a dreamy, calm expression. A loose strand of hair falls across her face, adding elegance. Soft diffused lighting against a plain white background
IMPORTANT: Preserve the exact face, identity, and expression from the uploaded reference photo. The face must match perfectly and not be altered
Prompt: Create a sharp, high-resolution large format photo with a 9:16 aspect ratio. Change the style of the character in the photo provided and maintain the correct proportions of the character’s facial features such as eyes, nose and mouth. The top-down angle creates a surreal photo that focuses on the character’s face with bare shoulders. Only flawless white skin, natural makeup and serene expression are shown. She has smooth, radiant skin with a light blush and long, thin lashes framing her eyes. He r black hair is neatly tied back, with several strands falling around her face. The soft sunlight creates artistic vertical or gridded shadows on her face and shoulders, highlighting her delicate features and giving a dreamy, graceful atmosphere. She leaves her shoulders bare, adding elegance and purity to the composition. Cinematic style, gentle and expressive, emphasizing beauty, innocence and calmness.
Prompt: Vertical portrait, 1080×1920. Keep the same facial features. Subject wearing a black blazer. Dramatic cinematic lighting – a narrow beam of warm sunlight passes through a window slit or blinds, casting a diagonal band of light across the subject’s face while the rest remains in deep shadow. Approximately one-third of the face and upper body are illuminated, the rest fading into darkness, creating a mysterious and elegant chiaroscuro effect. Background: deep, saturated crimson red, softly textured, with subtle falloff of light. Camera angle: slightly low and centered, emphasizing jawline and neck for quiet dominance and sculptural elegance. The mood is moody and sophisticated, evoking a timeless cinematic portrait – interplay of sunlight and shadow forming a natural frame on the face. Ultra-realistic skin texture, soft transitions between light and shadow, no harsh reflections, no text.
Xu hướng Prompt Gemini 2025: điện ảnh, noir, polaroid…
Năm 2025 chứng kiến nền đỏ cinematic và đen–trắng studio nổi bật trên mạng xã hội, kèm các biến thể editorial, anime/kawaii, retro/polaroid, và biến ảnh thành tượng 3D. Nhiều hướng dẫn và trang tổng hợp prompt ghi nhận sự phổ biến của các phong cách nói trên, đặc biệt khi Gemini hỗ trợ chỉnh sửa ảnh tham chiếu với độ nhất quán cao.
Ngoài cộng đồng sáng tạo, trend còn được người nổi tiếng/doanh nhân “đu trend”, góp phần lan tỏa nhanh hơn trên Facebook/TikTok.
