Use case: product-mockup / precise-object-edit
Asset: landscape premium product marketing hero, 3:2 composition, at least 1800 x 1200.
Edit target: supplied current GC1 Rev D CAD studio reference. Preserve the board identity, 66:44 proportions, three mounting holes, component count and positions, connectors, orientation, large square inductor, left-side XIAO module and USB-C connector, separate small MAX-M10S shield, bottom white three-pin side-entry JST connector, and asymmetrical miniature SBM-21 tube at the rear/top edge.
Primary request: transform the CAD reference into a beautiful convincing photorealistic studio product photograph. Entire board visible, three-quarter view from the front, centered, clean warm off-white seamless background, restrained soft shadow below, premium electronics launch photography. Crisp focus throughout the board, soft controlled reflections, clear material separation, satin deep green soldermask, finely brushed metal, natural solder fillets, realistic gold pads. Soft large overhead key and subtle cool rim. Board occupies approximately 78 percent of image width with generous clean margins. No props, hands, cables outside board, rulers, dimension lines, floating labels, branding additions or text overlay.
Critical mounting details: preserve the elevated dark insulating carrier at the rear, two narrow insulating support loops around the CAN only, and the two gold C-shaped leaf-spring contacts at opposite ends. The long silver cathode can is on the LEFT, 16 mm long by 6 mm diameter; the isolated small silver positive terminal is on the RIGHT, 2.05 mm diameter, separated visibly from the can by a dark insulating feedthrough. Do not make the terminal as thick as the can, add a second terminal to the closed left face, or use symmetrical fuse clips. The right carrier has a small insulating adjustment screw. Keep the short black cathode lead and red anode lead connected to the board pads. Preserve physical support and plausible separations. The product is an engineering prototype visualization; do not add certification badges or sales claims.
Silkscreen: retain only legible existing small white component identifiers; where tube polarity is visible use K(-) on the left and A(+) on the right. Do not invent long lettering, serial numbers, revisions, or logos.

Mode: built-in image_gen; edit of a Blender reference made from the current board data and carrier fit model. Final output: 1536 x 1024 PNG. Marketing illustration, not dimensional CAD or proof of a fabricated assembly.

Refinement prompt:
Use case: precise-object-edit. Edit the supplied GC1 PCB marketing image. Preserve its composition, board shape, all component positions, lighting, material finish and background. Correct mounting hardware only: (1) Completely remove the extra gold-rimmed mounting hole at the far LEFT corner near the USB module, replacing it with continuous green PCB. (2) Keep the two holes at the far RIGHT corner and nearest BOTTOM-RIGHT corner in their exact positions but remove their gold rings: these are simple unplated drilled holes through green FR4. (3) The small black circular disk just left of the Q1 component near the front board edge is the third mounting hole: turn this disk into an open unplated drilled hole. The final PCB has exactly THREE mounting holes. (4) Make the carrier adjustment screw beside A(+) dark matte insulating polymer, not shiny metal. Keep the single isolated thin metal tube terminal on the right, the closed metal can on the left, two gold spring contacts, two dark can supports, red and black wires, and K(-) and A(+) labels. Do not add any components, holes, pins, text or props. Photorealistic premium product photograph, 3:2 landscape.
