Image

A cluttered watchmaker's bench at dusk. A woman in a grey linen apron sits at the bench holding a brass pocket watch in her left hand while her right hand uses tweezers to place a tiny gear inside it. Directly behind her and slightly to the left, a man stands reading over her shoulder. On the bench in front of them: a half-full glass of water with a steel ruler standing upright in it, and a polished chrome desk lamp with a curved shade. The lamp is switched on and is the only light source in the room. A handwritten paper label taped to the front edge of the bench reads "CAL. 1815 - DO NOT OIL". Shot on 50mm, f/2.8, eye level. No plants anywhere in the frame.

What each clause is testing

holding a brass pocket watch in her left hand while her right hand uses tweezers

Hand anatomy under load, plus a fine tool grip. Two hands doing different specific things is still where most models break.

Directly behind her and slightly to the left

Relational composition. The model has to place two subjects in a stated spatial relationship rather than side by side.

a half-full glass of water with a steel ruler standing upright in it

Refraction. The ruler must appear to break and offset at the waterline, and magnify below it.

a polished chrome desk lamp with a curved shade

Reflection on a curved specular surface. A correct render shows the bench and the subjects wrapped in the chrome.

The lamp is switched on and is the only light source

Global light logic. Every shadow in the frame must agree on one origin and one falloff.

a handwritten paper label ... reads "CAL. 1815 - DO NOT OIL"

In-scene text, in handwriting, on a surface at an angle, including digits and punctuation.

No plants anywhere in the frame

Negative instruction adherence. Dusk interiors pull a plant into frame by default.