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The photo shows the clapboard for episode 516, identifying Nicotero as the director and Michael Satrazemis as the camera operator for the week.
Final Episode Directed by the affable Greg Nicotero pic.twitter.com/KlWEWHtuIs
— Robert K. Maxfield (@rkmaxfield) November 23, 2014
Maxfield also revealed a comic book-inspired shirt distributed to members of the visual effects and makeup crew by Nicotero at the end of filming for the season:
Here’s the T-Shirt Nicotero gave everybody on the crew. pic.twitter.com/QvSN635a0V
— Robert K. Maxfield (@rkmaxfield) November 23, 2014
Nicotero being an “in-house hire” is a way of ensuring visual and stylistic continuity, and also creates one less person who knows whatever big revelations, character deaths, or other juicy stuff might come out of the finale.