Nano Banana Pro

Black and white editorial portrait prompt

This turns an everyday photo into a moody monochrome studio portrait: dark grey backdrop, one hard light from the left, half the face in shadow and a plain black top. It works for an author photo, a speaker bio, a portfolio About page or a profile picture that should look serious rather than cheerful.

Gemini and Nano BananaOpen Gemini

Turn my uploaded photo into a black-and-white studio portrait while keeping the face exactly the same. Plain dark grey backdrop, a single hard light from the left that leaves half the face in shadow, sharp detail in the eyes and hair, deep blacks and clean highlights. They wear a plain black crew-neck top and look slightly past the camera with a calm, serious expression. Fine grain, high-end magazine portrait, 4:5 frame, head and shoulders.

Photo to upload: Start from a sharp photo with the head turned slightly to one side and no sunglasses, because the side light is meant to model the shape of the face and needs both eyes and the jaw to work with.

Gemini photo4:5Example made with Nano Banana Pro

More inspiration

Try this prompt

What each part of the prompt does

Single hard light: "A single hard light from the left that leaves half the face in shadow" describes split lighting in plain words. Saying where the shadow falls is more reliable than naming a lighting style the model may read differently.
Plain black crew-neck: Swapping the outfit for a plain black top removes logos, prints and colour clashes that look odd in monochrome, and keeps attention on the face.
Gaze and mood: "Look slightly past the camera with a calm, serious expression" sets the editorial mood. A direct smile into the lens would pull the image back toward a passport photo.
Tonal range: "Deep blacks and clean highlights" with "fine grain" prevents the common flat grey result and adds the texture of a printed page. Head and shoulders in 4:5 is the usual crop for a portrait spread.

Variations to try

Same idea, one thing changed. These have no example image yet.

Light from the right
Turn my uploaded photo into a black-and-white studio portrait while keeping the face exactly the same. Plain dark grey backdrop, a single hard light from the right that leaves half the face in shadow, sharp detail in the eyes and hair, deep blacks and clean highlights. They wear a plain black crew-neck top and look slightly past the camera with a calm, serious expression. Fine grain, high-end magazine portrait, 4:5 frame, head and shoulders.
Bright white backdrop
Turn my uploaded photo into a black-and-white studio portrait while keeping the face exactly the same. Plain bright white backdrop, one large soft light from the front with a gentle shadow under the chin, sharp detail in the eyes and hair, crisp whites and rich blacks in the clothing. They wear a plain black crew-neck top and look slightly past the camera with a calm, serious expression. Fine grain, high-end magazine portrait, 4:5 frame, head and shoulders.
Black roll-neck
Turn my uploaded photo into a black-and-white studio portrait while keeping the face exactly the same. Plain dark grey backdrop, a single hard light from the left that leaves half the face in shadow, sharp detail in the eyes and hair, deep blacks and clean highlights. They wear a fitted black roll-neck jumper and look slightly past the camera with a calm, serious expression. Fine grain, high-end magazine portrait, 4:5 frame, head and shoulders.

If the result isn't right

If a hint of colour stays in the skin or backdrop, type "fully monochrome, zero colour saturation".
When the shadow side goes pure black and the eye disappears, ask Gemini to "lift the shadow side slightly so the second eye is still visible".
Gemini can over-sharpen beards and stubble until they look like wire; say "natural hair detail, no over-sharpening".
If the face starts to look older or harder than you, reply "keep my age and features exactly as in the photo, only change the light".