Prompts for Car Photography

Car paint is a mirror with colour underneath. Almost every problem in a generated car image traces back to ignoring that: describe a blue sedan in a field and you get a blue shape with no reflections, which the eye reads as a toy. What a car looks like is mostly a description of what is around it, so write the surroundings as carefully as you write the car.

Paint Reflects, So Prompt the Reflection

Gloss paint returns the sky as a long bright band along the roof and shoulder line, and returns the ground as a darker band below the beltline. That gradient is the whole illusion. Ask for an overcast sky and you get a soft even sheen with gentle highlights. Ask for a clear sky at low sun and you get a hard streak down the flank and a warm rim on the wheel arches. A dark car in a bright open lot looks pale and washed out because it is reflecting everything; a dark car under a bridge or between buildings looks deep and saturated because it is reflecting shadow.

Finish matters as much as colour. Metallic flake sparkles under direct light and goes flat under cloud. Matte or satin wrap absorbs instead of mirroring and shows the body’s shape through shading alone. Chrome trim, gloss black wheels and clear headlamp lenses each behave differently, and naming two or three of them anchors the whole surface treatment.

Angle and Focal Length Define the Car’s Character

The classic three-quarter front at roughly waist height flatters nearly every car — you see the face and the flank together, and the proportions read correctly. Drop the camera to bumper height and the car gains mass and menace. Raise it and it starts looking like a press render. Say the height explicitly, because the default is usually a standing eye level that makes the roof look tall.

Long lenses compress. A 200mm shot from far away tightens the background, straightens the body lines and produces the slick advertising look. A 24mm from a metre off the front wheel exaggerates the nose and bends the horizon, which is dramatic and also where proportions most often go wrong. Between them, 50mm to 85mm is safe.

Motion Has to Be Described Mechanically

A parked car with blurred surroundings is a common failure, because “motion blur” alone gets applied to the wrong things. What you want is a panning shot: sharp car, streaked background, and spinning wheels with blurred spokes. Say all three. For a rig or rolling shot, add a blurred road surface directly under the car and a low camera. Wet tarmac after rain is worth asking for on its own — it doubles the car with a reflection and gives the tyres a spray if the car is moving.

A useful test: generate your scene with the car removed and see whether the location and light would make a decent photograph by themselves. If the empty version is boring, the car will have nothing interesting to reflect and no amount of paint description will save the frame. Fix the environment first, then put the car back in.