Ferrari looked to be the pick of the field after the first two days, as Sebastian Vettel and Charles Leclerc topped the timesheets on both days. On Wednesday, Daniil Kvyat posted the fastest time, however the Scuderia outfit completed its programme early.
Mercedes has not lit up the timesheets this week, but has set an impressive amount of mileage, clocking up 495 in the three days of running so far. Hamilton says that while Ferrari is looking quick, Mercedes is going about its own business.
“They’ve been looking great," he said in Barcelona. "For us, we’re just digging deep, trying to understand the car. It’s pretty much the same as the beginning of every year, the Ferraris always particularly look strong.
"Particularly the last few years they looked very strong right at the beginning so that’s to be expected. For us, we’re just going about our process, just trying to understand. Everyone’s working incredibly hard, it’s been normal."
Some sources say that Ferrari looks to be half a second ahead of Mercedes, however Hamilton says that he has no worries as the Silver Arrows fulfils its winter testing duties.
"At the moment I don’t really hold any worry about anything," he said. "I just try to focus on our job. I don’t know what everyone is doing. There’s different fuel loads, I’ve been in this business a long time so I know how it goes over the first week into the second week.
"So it’s not a time where we need to be focusing on others. We let everyone else do their thing and really try to focus on digging deep, trying to focus on making sure our processes are better than ever before, making sure we are analyzing the data better than ever before and the delivery from a driver’s point of view of the feedback that I give making sure it’s more accurate than it has ever been before.
"That’s what I’m trying to focus on and we’re trying to focus on and making sure we get through our run plans. We’ll have a better idea I guess this time next week, kind of whereabouts we stand but still even then we won’t know what fuel loads everyone is one and who’s showing their cards and who’s not.
"So nothing really changes there. I don’t think you can really put a figure on it but Ferrari are very, very strong right now as you’ve seen. They are obviously racking up great mileage as well so it appears that they have a better package than they had last year which means it’s going to be even more of a challenge for us this year."
Bahrain International Circuit - Winter testing