Lewis Hamilton says he is wary of the threat posed by Ferrari despite Mercedes locking out the front row of the grid during qualifying for the Canadian Grand Prix.
Hamilton posted a time of 1:12.812 to edge out team-mate Nico Rosberg by 0.062s, with Sebastian Vettel a further tenth of a second back in third.
Ferrari has brought an upgraded turbocharger to the Circuit Gilles Villeneuve and Hamilton reckons the outfit can pose a challenge during Sunday's race.
"Ferrari has obviously picked up the pace with their upgrades," Hamilton said.
"This is a great track to test ultimate speed, so we're excited to have a race with them.
"Their long runs looked very strong. I don't know if they were stronger than ours – we'll see tomorrow."
Hamilton admitted his advantage over Rosberg had been reduced compared to Friday's practice sessions but was nonetheless thrilled to take pole position in Canada for a fifth time.
"To be honest it doesn't matter how far you are ahead, as long as you are ahead," he commented.
"It's going to be interesting tomorrow, but this is the best place to start, for sure."