How do I read a QC photo for flaws?

Why

• Order follows reversibility. A structural failure cannot be corrected at home: a collapsed heel counter cannot be stiffened, a mismatched pair cannot be rebuilt, and a bond that has already opened cannot be re-glued by hand with the same result. Anything reversible belongs later in the sequence, however badly it photographs in a close-up.
• The cheap checks go first because they can end the sequence early. Counting stitches across a twenty millimetre span, or photographing both toeboxes from the same height, costs one message. A press test on the sole edge can settle four other questions at once, because how a seller responds to a request for a video is itself information.
• Attention is the scarce resource in a large set. Twenty photographs read in the order the seller sent them distributes scrutiny evenly, which means the single fatal frame receives the same weight as six flattering ones. Fixing the reading order fixes that, and it also produces a written record of which frames carried which verdict.
• Pair reading comes before single-item reading. Two shoes, two gloves or two cuffs compared against each other expose mismatches that no single close-up can show, because a fault and its absence look identical when they are photographed separately. Where a set contains no paired frame at all, ask for one before reading anything else in it. A paired frame also settles the most common argument in a dispute, which is not whether a flaw exists but whether it exists on both units or only on the one that was photographed. Where no pair is possible, because the order is a single item, read the whole item at a distance first and move to close-ups afterwards, so that the position of a mark is fixed before its size fills the frame. Order the frames the same way in every set you request, and comparing two orders later costs nothing.

When this answer flips

• The item is bought as a gift or for resale, where a visible cosmetic mark matters more than an invisible structural one. The threshold then moves towards appearance, and the reading order should move with it, starting from the faces that will be seen rather than from the bond line underneath.
• The order is a replacement for an earlier one that failed structurally. The useful comparison is then against your own photographs of the first unit rather than against a general standard, and the sequence starts with the part that failed last time, in the same light and at the same distance.
• The price sits far below the band for that build, and the flaw is the reason. A discounted unit with a known cosmetic fault becomes a decision about price rather than about evidence, and the sequence should be shortened to the checks that could still turn out to be fatal.

Three things to do next

1. Start with the toebox and pair shape check
2. Press-test the sole edge before deciding
3. Score every step into one verdict