I have 2 sdhc cards in my D600. They are class 10, each rated at 45mb/s. Viewing the image on the lcd screen seems to take about 2 seconds or so for the image to appear. I have not shot video yet, but it seems like this card may be too slow for that. The manual is not very clear other than to say use class 10 cards up to 32mb. Any one know what speed card would be best for this camera?
I can't tell a difference between 45mb/s and 95mb/s SanDisk cards in my D600, although I have not actually put a stopwatch to it. How do you have the slots configured? Are you using one as a backup, thus writing to both cards at the same time?
I have seen the same issue, but it's not always predictable. I'm using some of the fastest cards available at the moment. It's hit or miss when it does it, but it is noticeable. It's right about 2 seconds of lag time before an image appears when it does happen.