Foster said the hurt of the loss ensured there would be no issues getting up off the mat for France. The French had an exciting young team, and it was a great game for the All Blacks to respond.
"I don't think we'll be short of motivation at all. Our senior players and leaders are hurting and already starting to think about our plan for this week," he said.
"A week's always a long time in a game of rugby. We were well beat by a very good Irish team last night, but we've got a short period of time that we've got to take stock of that and make sure that we come out on Saturday and finish this tour the way we want to," he said.
The side would be going through their usual early-week process of recovery and preparation, but there was an edge when coming off a loss.
"The key thing is not to stay in that space for too long," he said. It was a case of dissecting the loss, get what they can out of it and then get back to work for the next game," he said.
Foster said specific lessons included the All Blacks lacking composure with the ball.
"You're always going to get times in games when momentum goes against you, but it's how you turn that around.
"We did have opportunity to try and turn it around, but we weren't clinical enough in those moments. So that's something we've got to get out of last week because we're going to have a French team that's going to be pretty relentless too, in how they want to play," he said.
While the pack had performed well, they lacked chances to get on the front foot, and that was often due to the turnover of the ball within one or two phases – a recurring problem in the Springbok Tests earlier in the tour.
"It's a matter of backs being accountable for decisions they make, and retaining the ball, to give our forwards a chance to impose themselves, and that's going to be a big part of the solution," he said.
Against retention-style teams like Ireland, opportunities needed to be taken. The All Blacks' two tries reflected that, but at other times, they were not. Foster was happy their defence kept them in the game, but they had not been clinical enough in the final quarter.
"We didn't quite have the composure to figure things out," he said.
An example was No8 Ardie Savea's outstanding break that opened the door and only needed quick ball to provide a chance. However, the All Blacks conceded a penalty instead.
Commenting on the TMO's involvement in decision-making, Foster said his only comment would be that the emphasis in decisions should be based on the TMO proving that the referee's decision wasn't right.
It should not be the TMO attempting to impress the referee with his belief that a decision needed to be made by elongating the conversations and using more footage to persuade the referee. He would prefer the referee went with his gut feeling once he had seen the initial footage.
Foster said Beauden Barrett, who failed an HIA test during Saturday's Test, was under observation for the next 48 hours. Centre Anton Lienert-Brown, who suffered an injured shoulder, will not be available to play France.