I am much too late in noting the passing of the superb Boston artist Robert Douglas Hunter. I suppose he may have had an equal somewhere in the genre of still life painting, but no one could have been better than Hunter, who complemented the solidity of his objects with a uniquely delicate sheen. Unlike others who specialize in still life paintings, Hunter’s arrangements, his perfect highlights in the otherwise subdued lighting, and that unmistakable patina, are instantly recognizable to anyone with even a casual familiarity with his work.