We ran an 1865 portrait of Abraham Lincoln through a modern passport photo check

We took Alexander Gardner's February 1865 portrait of Abraham Lincoln from the Library of Congress and measured it against the current US passport spec. Verdict: rejected, on background uniformity and brightness, with real measured numbers rather than guesses.

The point of the exercise is that 'looks fine' is not the standard. A perfectly good portrait, arguably one of the most famous portraits in American history, fails a mechanical check because the background is not plain white and the exposure sits outside the acceptable band.

That is also why photos taken at pharmacies and post offices still get rejected: the standard is numeric, and nobody measured. Every number in the test article comes from the same measurement pipeline our checker runs on real photos.

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