Nikon d3s User Manual (en)

Buffer Size
The approximate number of images that can 
be stored in the memory buffer at current 
settings is shown in the exposure-count 
displays in the viewfinder and top control 
panel while the shutter-release button is 
pressed halfway.
The illustration at right 
shows the display when space remains in the buffer for about 85 
The Memory Buffer
The camera is equipped with a memory buffer for temporary storage, 
allowing shooting to continue while photographs are being saved to 
the memory card.
Up to 130 photographs can be taken in succession; 
note, however, that frame rate will drop when the buffer is full.
While photographs are being recorded to the memory card, the access 
lamp next to the memory card slot will light.
Depending on shooting 
conditions and memory card performance, recording may take from a 
few seconds to a few minutes.
Do not remove the memory card or remove 
or disconnect the power source until the access lamp has gone out.
If the 
camera is switched off while data remain in the buffer, the power will 
not turn off until all images in the buffer have been recorded.
If the 
battery is exhausted while images remain in the buffer, the shutter 
release will be disabled and the images transferred to the memory card.
See Also
For information on choosing the maximum number of photographs 
that can be taken in a single burst, see Custom Setting d3 (Max.
continuous release
0 307).
For information on the number of 
pictures that can be taken in a single burst, see page 420.