Memory cards (In terms of cameras), most of the time, save digital photos taken in "JPG100" format or "RAW12" format. To tell what kind of format your digital camera saves wit…h, upload the pictures (Or, just connect the camera) to the computer. Take a look at the image file names. If they are named "JPG001", "JPG002", (so on) depending on the picture number, it is saved in JPG100 format. If pictures are named "RAW01", "RAW02", (so on), it is saved in RAW12 format (But different cameras name images differently; be very open to these rules. They are not always exact)..
We are assuming 8.1 megapixels will make a [ 3184 wide X 2544 high ] picture..
You can save about 1,300 RAW12-savetype pictures . (Assuming - 12.0 Megabytes per picture).
Alternatively, you can save about 8,000 JPG100-savetype pictures. (Assuming - 2.0 Megabytes per picture).
Remember; Every picture takes up a different amount of space, and nothing will be exact. (MORE)