Tatiana Siegel checked in from last night’s “Tinker, Tailor, Soldier, Spy” New York premiere. The Focus Features film will have its L.A. premiere Dec. 6.

Author John le Carré wasn’t exactly bowled over by the idea of having his Cold War espionage novel “”Tinker, Tailor, Soldier, Spy” brought to the bigscreen. After all, the book already travelled to the smallscreen for a seven-hour Brit miniseries. So when Swedish helmer Tomas Alfredson and producer Tim Bevan visited the one-time MI5 spy at his home, le Carré dissuaded the men from making a literal adaptation. “He said, ‘Please, do not do this book. It already exists,’ ” Alfredson said at the film’s Gotham premiere Wednesday at the Landmark Theatres Sunshine Cinema. ” ‘Please try to turn it upside down a little, and then let’s discuss.’ ’”

Alfredson, who is best known by American auds for his coming-of-age vampire pic “”Let the Right One In,” didn’t just turn the novel on its head. He is drawing raves on both sides of the pond for reinvigorating the genre altogether, creating something of an anti-Bourne in the process. Meanwhile, the 80-year-old scribe, whose novel “”The Constant Gardner”” became an awards-season player six years ago, approves and has lent his name to the pic as an executive producer. “He’s very pleased,” said Alfredson, who relished le Carré’s input. “He’s very meticulous about details. He would say, ‘You would never park a car like this. You would never use a pencil like that. You would never address a person like this.’ But he was also really open-minded about changing things that would be more interesting or easier (to pull off cinematically).” — Tatiana Siegel