I typically get about 305 shots listed as available on my D700 on a Lexar 300x UDMA 8GB card. My 5DmkII shows somewhere in the high 280s for the same cards. Given the resolution difference, is the D700 inefficient or is the 5DmkII seriously efficient? Both are set to RAW and their lowest base ISO speeds, with normal high ISO NR, no long exposure NR and no active D.
I noticed that today and it seemed like a huge disparity. Are you seeing the same numbers from other D700s?
On a newly formatted 4gb card I get 204 shown as the available shots in Raw. However I usually get about 280-290 on a card. Nikon cameras are normally conservative with displaying the number of avaiable shots. It may be that your 5DmkII shows a number closer to what is avaiable.
I just finished shooting my lexar 8gb 300x card the other day on my d300 and the lcd shows around 400 after formatting, but I got 655 downloaded on my computer. most were around 10-11mb. guess it depends on the scene.
I RTFM, and TFM said 100 12-bit per 2GB card, 77 for 14-bit lossless. I think comparing the counters is more or less of no use, since the conservative counting usually gets you many more than you think.
On a "just-formatted" SanDisk Extreme IV 8 Gb card in my D700, using 14 bit non-compressed NEF, the LCD reads a 310 image capacity. It will take more than that number, but not all that many more. 12 bit non-compressed = 403.
f/8 and be there?...but I'm moving as fast as I can...I'm up to f/4 already!
The 305 number displayed is conservative. I typically get ~500 images on a SanDisk Extreme IV 8 GB collecting Raw 14 bit lossless compressed. It really depends on the complexity of the images. Lots of random features and wide light levels take up more space than blue skys with little features.