I usually use Lexar 400X or SanDisk Extreme III 30MB/s 8Gb cards and shoot in RAW 12-bit lossless compressed on my D300. On first insertion, the cards show a capacity of 385 images. However, I am repeatedly getting 520 or so from each card. This usually means I never exhaust the card and change it well before that point. Probably it is a good point as I will always (?) have some capacity left, but it is frustrating not knowing just when I have to change cards. I have formatted the cards both in and out of the camera, but with no effect. Does anyone have any idea (1) what is causing this, and (2) how to fix it, please?
Nikon's remaining shot calculation has always been very conservative. It appears to be based on a worse case compression scenario. On all my Nikon DSLRs, I typically get over 50% more images than indicated on the top LCD. It's not a bug, it's a feature.
Gary in SE Michigan, USA. Nikonians membership - My most important photographic investment, after the camera. D4, D810, D300 (720nm IR conversion), D90, F6, FM3a (black), FM2n (chrome) YashicaMat 124, Graflex Speed Graphic 4x5 My Nikonians Gallery & Our Chapter Gallery
I think I ready somewhere that the card capacity is based on an average size for image information. As you shoot some images have less information than others for example an image with nothing but grass in it will have less information to store than an image of a crowded carnival. Same principle as a JPEG have less info than a Raw file. So as you shoot the card will hold more or less depending on the scene you shoot. I have a D800 with a 32gb card. I shoot raw. My capacity starts at 393 and I have gotten as many as 700 or more.
As stated above, the "Shots Remaining" displayed in the top LCD is a very conservative estimate. The closer the card gets to full, the more accurate the number dispayed will be. If you are shooting non-critical subjects, you could just wait until the card is full before you switch to a new card. Just make sure that Cusom Setting f9 No Memory Card? is set to "Release locked" to prevent the shutter from releasing when the memory card is full or there is no memory card in the camera. There is no "Fix".
Tue 03-Sep-13 03:42 AM | edited Tue 03-Sep-13 03:44 AM by jrp
Memory cards are like car gas gauges, not linear; and show an estimate, usually conservative so nobody gets upset. What Monica said about file sizes is also true; they vary with the amount of detail. Also, -and this has happen to me too in latest cameras- cards seldom get full, because there seems to be algorithms in place to further -and slightly- compress files. Again, so nobody gets upset