Glossary

Focus Stacking (Jewelry)

Focus stacking takes multiple photos of the same piece at different focus distances and combines them into one image where the entire piece is sharp. Standard technique for macro jewelry photography because depth of field at 1:1 is so shallow that no single shot has the whole piece in focus.

Why focus stacking exists

At macro magnification (1:1 reproduction ratio), depth of field is brutally shallow — often under 1mm even at f/16. For a ring photographed top-down, this means the top of the band might be sharp while the prongs are soft, or vice versa. Stopping the aperture down further introduces diffraction, which softens the whole image. The way out is to take multiple shots at different focus distances and composite them — focus stacking.

How focus stacking works in practice

Studio workflow: lock the camera on a tripod, fix the lighting, take 5-30 shots while incrementally adjusting focus from front-to-back of the piece (or use a focus rail for sub-millimeter precision). Photoshop, Helicon Focus, or Affinity Photo composites the sharpest pixels from each frame into one final image. Result: every facet, every prong, every engraving is sharp. The trade-off is time — a stacked macro takes 5-10 minutes per piece vs 30 seconds for a single shot.

Where AI fits in

Modern image-to-image AI can simulate focus stacking from a single sharp-enough input by enhancing detail across the entire piece — not as physically accurate as a real stack but visually equivalent for catalog use. For sellers without a studio, a single phone macro shot through jewelry-aware AI gets ~80% of the way to a stacked output. For luxury / heirloom catalogs where pixel-level accuracy matters, real focus stacking still wins; AI is the high-volume catalog default.

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Last updated 2026-05-03