Nikon D3100 - Manual (Page 203)

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Memory Card Capacity
The following table shows the approximate number of pictures that can be stored on
a 4 GB SanDisk Extreme SDHC card at different image quality and size settings.
Image quality Image size File size 1 No. of images 1 Buffer capacity 2
NEF (RAW)+
JPEG fine 3
L 19.8 MB 151 9
NEF (RAW) — 12.9 MB 226 13
JPEG fine
L 6.8 MB 460 100
M 3.9 MB 815 100
S 1.8 MB 1700 100
JPEG normal
L 3.4 MB 914 100
M 2.0 MB 1500 100
S 0.9 MB 3300 100
JPEG basic
L 1.7 MB 1700 100
M 1.0 MB 3000 100
S 0.5 MB 6000 100
1 All figures are approximate. File size varies with scene recorded.
2 Maximum number of exposures that can be stored in memory buffer at ISO 100. Drops when noise
reduction ( 0 134) is on.
3 Image size applies to JPEG images only. Size of NEF (RAW) images can not be changed. File size is the
total for NEF (RAW) and JPEG images.