New-goods photography is built on concealment. You light to flatter, you retouch the pull in the knit, you choose the angle that hides the seam pucker, and none of that is dishonest because every unit of that SKU is identical and the pucker was a lighting artefact anyway. Bring that instinct into resale and it becomes a liability with a dollar value attached.
A documented flaw does not cost you the sale. An undocumented one costs you the item, the shipping both ways and your seller rating. Someone paying $180 for a 1994 Carhartt Detroit jacket is not expecting it to be new. They are expecting it to be what you said. Not-as-described is resale's version of a fit return, and it behaves worse than a fit return: on most marketplaces it resolves in the buyer's favour more or less automatically, the item comes back having been shipped twice on your account, and the ranking penalty follows you into every future listing.
The counter-intuitive part, and every high-volume vintage seller we have worked with confirms it independently, is that the flaw macro raises conversion on the units that carry one. Not because buyers like damage, but because a listing that shows you the two-centimetre paint speck on the left cuff is a listing whose other claims you believe. Condition disclosure is the trust instrument in a category where the buyer is purchasing a thirty-year-old object from a photograph, and it is doing the same job that a stated hem drop does in modest wear or a photographed grade rule does in extended sizing.
What makes this a production problem rather than a policy problem is that flaws do not share a lighting setup. This is the part the category gets wrong almost universally, and it is why so many listings contain flaw photographs in which the flaw is genuinely invisible. There are six flaw families and each one is legible under a different light.
Pinholes, moth damage and thinning. Only transmitted light. The source goes behind the cloth and the hole becomes a bright point; under a frontal ring light a two-millimetre pinhole in navy wool does not exist at all, right up until the buyer opens the parcel and holds it to a window. This is the single most commonly missed frame in vintage knitwear and it is the single most common not-as-described claim.
Pilling, abrasion and nap wear. Only raking light. A hard source at fifteen to twenty degrees across the weave throws each pill its own shadow. Under the soft frontal light every listing photo uses, a heavily pilled sweater and a clean one photograph as the same sweater.
Fading and sun-tone shift. Only as a comparison. Fade has no absolute value in a photograph, because the buyer has no idea what the original colour was. The frame that works puts the worn face directly beside an unfaded reference from the same garment: the seam allowance, the underside of a collar, the inside of a placket. On denim this is the whole game, and it is the difference between a listing that says faded and a listing that shows exactly how far.
Staining, yellowing and discolouration. Colour-accurate light and a scale reference in frame, because small stain is not a measurement. A coin, a ruler edge or a swatch card in the corner converts a vague apology into a fact the buyer can decide about in two seconds.
Repairs, darning and re-stitching. Both faces, always. A repair shot from the outside alone tells the buyer nothing about whether it is structural or cosmetic, and a competent darn photographed from the reverse is frequently a selling point rather than a defect, particularly in Japanese-market and workwear inventory where visible mending carries its own value.
Seam separation, dry rot and elastic failure. Under tension. A perished waistband and a sound one look identical at rest. Gentle tension applied in frame is the only honest read, and it is also the read that protects you when a buyer stretches it themselves on arrival.