I purchased this series and all episodes play almost the same. The intro starts off with a excellent picture. The episode continues and the picture quality goes back and forth from good to grainy. Has anyone returned this series for a replacement due to this problem and received a replacement series that has no issues?
On one of the discs is a discussion about the series being shot in high definition but they did something to the pictures (on purpose!) to make them the way they are for effect so I don't think that the replacements would be any better. I bought the blu-ray and I have a lot of the series on DVD as well and they both contain the same dark grainy images. I too found the picture quality very frustrating and can identify with your disappointment. Fabulous series though.
Thanks for the info. I've just started watching this series and I thought there was something wrong with it. Especially as there was an intro saying it was all shot in HD. I was expecting a fab picture not the grainy one that I got. I even checked my TV and blu-Ray player thinking that there was something wrong.