ConSynth-X v2-strict is the high-fidelity, strictly DINO-gated subset of ConSynth-X v2: a construction computer-vision robustness benchmark with 3,109 source images × 12 conditions = 37,308 rows drawn from three source datasets. Every source image is fully paired across all 12 conditions (1 original + 11 synthetic), enabling rigorous cross-condition (paired) robustness analysis.