Scale and Proportion in Image Prompts - Nano Banana 2

The fix is almost always to put a second thing in the frame whose size everyone already knows. A person is the strongest reference there is, and adding one changes the image immediately: a giant mushroom with a hiker standing at its base is unambiguously giant. Doorways, cars, coffee cups, chairs, coins, hands — all of them carry a fixed size in the viewer’s head and will anchor whatever sits next to them.

Say what the reference is doing, not just that it exists. “A tiny house with a person” leaves the relationship open. “A house small enough that a person standing beside it can rest a hand on the roof” states the ratio, and stated ratios survive generation far better than adjectives do. Comparisons work the same way: the size of a bus, no taller than a thumb, the height of a three-storey building.

Low angles help sell largeness, because looking up at something is how we experience big things in life. High angles help sell smallness for the same reason. These reinforce a scale relationship you have already established with a reference object; on their own, without a reference, they do very little.

Miniature and tilt-shift effects are the opposite trick — a shallow, blurred band across a wide scene makes real buildings read as models. It is a strong effect and worth naming directly when you want it, and worth avoiding when you do not, because shallow depth of field on a wide scene will produce it accidentally.