Vierny was one of the great cinematographers, wasn't he? Ten films with Alain Resnais and everything Greenaway directed between A Zed... and 8 1/2 Women. He made several films with Ruiz.
Ruiz uses the word "bricolage" to describe how he incorporates into his filmmaking process anything that's "at hand". He talks about being open to the possibilities of what's around during the shoot. This is true of both low-budget films like 3 Crowns and expensive productions like Time Regained and Klimt. Ruiz is willing to make last-minute changes to the script or to the mise-en-scene; to be spontaneous.