If a close product refuses to become sharp, it may be inside the lens's minimum focus distance. Repeated autofocus attempts cannot remove that optical limit. Move the camera or subject farther apart, check the lens specification at the chosen focal length, and measure from the camera's specified reference mark rather than assuming that distance starts at the front glass.
Read distance and magnification separately
Sony's camera guide identifies the image-sensor position mark as the reference for an exact subject-distance measurement and warns that focus cannot be confirmed inside the lens's minimum shooting distance. The gap from the front of the lens is working distance; record it separately and compare the lens specification with the sensor-plane distance it actually defines.
Some zoom lenses specify different close-focus distances at different focal lengths. For example, Sony's SEL18200 specification lists different wide and tele values. That is an example of why to read the actual lens specification, not a universal distance for every product photo. A zoom change can alter the constraint you were trying to satisfy.
A measured tabletop check
The following is an unexecuted reader test. Put a small textured object on a stable table and use steady light. Record the exact lens and focal length. Locate the sensor-plane reference using the camera manual, then compare the current subject distance with the lens's minimum for that configuration. Keep the lens clear of the object and avoid contact with delicate products.
Without changing focal length, move back along the same axis in small recorded steps and refocus on the same feature. Keep each original frame. Compare the texture, focus confirmation, and how much of the frame the product occupies. Do not immediately crop every image to identical apparent size, because that conceals the practical tradeoff between reliable focus and framing.
Choose an honest way to fill the frame
If backing away restores focus but makes the item small, consider whether a crop has enough recorded detail for the required output. An appropriate macro lens or supported close-up accessory may be another option, with its own working distance and handling requirements. A digital zoom or generative enlargement does not turn an unfocused capture into a verified macro record.
Also distinguish minimum distance from shallow depth of field. If one thin part is sharp and nearby parts are soft, the lens may already be focusing; the required depth is a separate issue. If nothing becomes clear at a documented usable distance, continue with lighting, target contrast, lens settings, and equipment checks instead of moving progressively closer.
Before an Imagild product transformation, choose a source with legible labels and actual surface detail, even if the untouched frame includes extra surrounding space. Keep that original and create a separate crop for the brief. Check the final interpretation against the real item; convincing invented engraving or weave should not be presented as photographed product detail.