Memory Card estimated image capacity (number of recordable images by card size).
PowerShot A640.
|
Resolution / Compression
|
Compression
|
32 MB (Card included with camera)
|
SDC-128M (128MB)
|
SDC-512MSH (512MB)
|
|
L (Large)
|
|
7
|
29
|
116
|
|
|
12
|
50
|
194
|
|
|
25
|
103
|
402
|
|
M1 (Medium 1)
|
|
10
|
45
|
176
|
|
|
18
|
75
|
292
|
|
|
38
|
156
|
603
|
|
M2 (Medium 2)
|
|
14
|
61
|
237
|
|
|
27
|
109
|
425
|
|
|
53
|
217
|
839
|
|
M3 (Medium 3)
|
|
30
|
121
|
471
|
|
|
53
|
217
|
839
|
|
|
102
|
411
|
1590
|
|
S (Small)
|
|
114
|
460
|
1777
|
|
|
177
|
711
|
2747
|
|
|
278
|
1118
|
4317
|
|
 Postcard
|
|
53
|
217
|
839
|
|
 (Widescreen)
|
|
9
|
40
|
157
|
|
|
16
|
66
|
257
|
|
|
34
|
139
|
539
|
- Bold: Capable of smooth continuous shooting in these settings. (When the card has been formatted with a low level format)
- This reflects standard shooting criteria established by Canon. Actual results may vary according to the subject and shooting conditions.
