I have many black and white films on DVD from the 30s, 40s and 50s, but too often the pictures seem to me to display different shades of grey instead of clearly defined black and white. My Pioneer plasma TV set has a Dynamic picture setting which boosts the colour and contrast. I never use it for colour because it makes the picture look awful but I have recently used the setting for black and white films and it gives a superb, strongly contrasted black and white picture, with the blacks really black and the whites really white instead of a rather bland overall greyness. I love that strong contrast but is this how black and white films should look? It's a long time since the 50s when I regularly saw many black and white films in the cinema, so I can't recall exactly how they looked. I'm really asking what should black and white films look like? Should they be highly contrasted?