My Nikon D7000 has a 16 GB SDHC card. The DSLR is configured to shoot in RAW only. When the card is empty, the camera displays that I can shoot 449 photos.
The size of RAW files vary from 17 to 22 MB. So 16384 / 22 gives 744.7, far from the displayed 449 photos.
Why such difference? Is the maximum possible size of a RAW file made with this camera is 36.5 MB (16384 / 449)? Or will the camera use only 10 GB of memory (449 × 22)? If it's the second case, why is it using only a part of the SDHC?