another review by mingthein
Nikon D800 review update: daylight shooting – Ming Thein | Photographer
"AF is not as fast as the D4, nor do we expect it to be.
The difference is similar to that between the D700 and D3 – probably down to battery voltage and the current available to drive the lens motor. It seems subjectively the same as the D700 under very low light conditions – specifically, speed and tracking ability. However, I was using an 85/1.4 G wide open to see if the camera could track moving objects with it – the answer is, hit and miss. Sometimes yes, sometimes no. I suspect the actual AF module performance is no worse than the D700, but with the increased pixel density of the D800, the demands on focus accuracy just got a lot higher – and that’s the shortfall we’re seeing here."
Nikon D800 review update: daylight shooting – Ming Thein | Photographer
"AF is not as fast as the D4, nor do we expect it to be.
The difference is similar to that between the D700 and D3 – probably down to battery voltage and the current available to drive the lens motor. It seems subjectively the same as the D700 under very low light conditions – specifically, speed and tracking ability. However, I was using an 85/1.4 G wide open to see if the camera could track moving objects with it – the answer is, hit and miss. Sometimes yes, sometimes no. I suspect the actual AF module performance is no worse than the D700, but with the increased pixel density of the D800, the demands on focus accuracy just got a lot higher – and that’s the shortfall we’re seeing here."