The Masque Of The Red Death is arguably the best of the Edgar Allen Poe adaptations that Roger Corman made with Vincent Price in the 60s.

The film is the last but one of 8 Poe adaptations Corman directed. It was made in the UK, and was stylishly shot in color by cinematographer (and later director) Nicolas Roeg. 

None of the Corman Poe films are particularly scary – they lean heavily on moody atmosphere, and are quite a departure from the low budget exploitation fare Corman churned out as a producer.

This striking image is the US one-sheet poster. I have it for sale here.