I recently purchased a D600 and so far after 600 actuation no oil problems. Great camera and so far happy with purchase. I was noticing that it is backwards compatable with older Nikkor lenses. I have several old prime lenses from my original Nikkormat FT-2 and was wondering if these would work on the D-600. Only marking on the lens is Nikkor 50mm 1:1.4. Also, I was wondering what would be a better SDHC card for the camera. Sandisk Extreme at transfer rate of 45 mbps or the Sandisk Extreme Pro at 90 mbps. The latter is double the proice and I am not a professional. I will be using the camera for personal video.