Aquí lo he leído:

https://www.amazon.co.uk/review/R2LO...wasThisHelpful

M. J. says:
I watched this blu-ray last night and was extremely underwhelmed with it.

The film is great. I personally thought the picture quality was poor. I know we're talking about a low budget Spanish horrorfilm from the 70s. But it could've looked much better.

The subtitles had a lot of errors in. No excuse for this. A bit of quality control could've fixed this very easily.

The intro was dubbed over. It's presented in Spanish with subtitles on the Mondo dvd.

For me, great film, poor disc.