Criterion 4K Blu-ray

Criterion 4K Blu-ray see caps comparing UHD vs BD: https://slow.pics/c/IVNrYoYW

For older Blu-ray: Criterion Blu-ray > Universal Blu-ray with slightly worse encoding > Japan Paramount or UK Park Circus Blu-ray with significantly flatter contrast (possibly Quicktime Gamma Bug?) see caps

Criterion The Adventures of Antoine Doinel 4K Blu-ray set

Criterion 4K Blu-ray > Carlotta, with debatable color gradings from master (yellow hues).

See nicolas review https://criterionforum.org/forum/viewtopic.php?p=842821#p842821

"Carlotta’s encodes were terrible with heavy blocking in the highlights and pervasive chroma noise. Criterion / NexSpec did much better and only occasionally struggles with skies. Grain is finely detailed and it doesn’t look filtered. Grading is debatable and particularly whether all three subsequent films (shot years apart by two cinematographers, one of them being the legendary Néstor Almendros) have roughly the same visual identity. Still, colors are adequately balanced with variations in the (yellowish) hues, there are no tints, black levels and shadow detail is excellent."