Prompt
A close-up study of a single plank of natural wood grain filling a 16:9 frame, oriented horizontally with grain lines running left-to-right and the central growth ring area positioned slightly left-of-center. The wood surface occupies roughly the middle third of the frame horizontally and the lower half vertically, leaving the upper third as gentle negative space that reads as soft, out-of-focus background. Capture tactile surface detail: shallow fissures, fine pores, raised growth-rings and subtle sap streaks with defined edge texture and matte, slightly worn varnish. Use soft side lighting from the right to reveal shallow relief and cast gentle, elongated micro-shadows that emphasize grooves without high contrast. Render shallow depth of field so the midband of grain is sharp while foreground and background fall into smooth blur. Compose for a widescreen wallpaper: tight horizontal crop, even left and right breathing space, no added objects or text so the wood pattern reads as a continuous repeating texture.
