Shot my first shoot with my refurb d7200 tonight. I have it setup for BBF. I noticed that after the camera sat for a minute, when I press the AF-l button to focus, there was a slight delay before the AF started. Once I pressed a button the AF was Instant. But if I let the camera sit for a minute or two untouched then it was lag behind when I pressed the button. It is like it is in a sleep mode and has to be woken before it can work. I would prefer there be no lag time at all 100% of the time. Is there a setting or is this just something that I have to get used too?