I don't know the right term.Hello and welcome. Buffering is caused by the SD card not the camera.
I think my question has gone another way.The speed of the memory card (SD or otherwise) is not the only thing that causes buffering in cameras.
'DSLRs and other digital cameras contain a camera buffer (consisting of random access memory, or RAM), which temporarily holds the data information before the camera's hardware writes it to the memory card.'
I'm sure sombody who knows what they are talking about will explain it better.
That's completely different thing from buffering. You're on about the camera's AF capabilities and that of the lens being use. There are a lot of variables here.I think my question has gone another way.
What I'm originally asking is, what camera (under £400) is best when focusing on a object in video mode. And doesn't lose the object and try to refocus always and goes blurry often trying to refocus.
That's completely different thing from buffering. You're on about the camera's AF capabilities and that of the lens being use. There are a lot of variables here.