# Blind image comparison

One of these two images is a photograph of a real thing; the other is rendered. Which is the photograph? Answer `a`, `b`, or `cannot_tell`.

Judge each numbered pair independently. Judge the complete visible evidence. The framing is `full`.

`cannot_tell` is legitimate when the evidence does not decide. A guess is worse than `cannot_tell`.

For every pair, return its number, your answer, confidence from 1 to 5, and exactly three defects using the supplied schema. Defects may concern silhouette, proportion, scale, material, texture, edges, lighting, shadow, environment, artefact, composition, or none. Do not seek source identities or use file size as evidence.

Echo this bundle digest exactly: `9eaa0ed139309d6a861aea2c64acd55fb1efaf0c579857b129452ee8eda70e78`.