A book of this depth and detail would translate much better into vision by being made into say, a 4 to 6 part series like - 'Band of Brothers' or 'Das Boot', as opposed to a one and a half to two hour film. I think the former would be a better vehicle to convey night-time bombing activities, plus the claustrophobic atmosphere of an Avro Lancaster. Of course, there would also be plenty of scope to show the extra detail included by Len Deighton in his novel, particularly the German side of the battle including the Luftwafe Night Fighter activities, etc.