Storage Devices
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! Note !
This is rough data that may be updated,
if / when I revisit this page.
INTRODUCTION: Back in 2006 (when this page of storage-capacity data was created), the memory cards used in digital cameras were in a size range from about 256 Megabytes to about 2 Gigabytes. About 15 years later (circa 2020), memory cards (and USB sticks) are typically offered in the range of about 8 Gigabytes to 128 Gigabytes --- roughly a 30-fold to 60-fold increase in the typical size of these storage devices. Similarly, back in 2006, various digital cameras created images in sizes from about 3 Megapixels per photo to about 10 Megapixels per photo. About 15 years later (circa 2020), digital cameras (and smart phones) typically create images of about 12 Megapixels per photo (or higher) resolution. Back in 2006, when you bought a memory card for a digital camera, the packaging would typically show a table of how many photos (and songs and videos) of a certain size you could put on the memory card. The old (circa-2006) table below shows the capacity of different sizes of memory cards --- expressed as
This page offers that old, circa-2006 table. An updated table may be provided at a future date. In case that never happens, there is a WEB SEARCHES section near the bottom of this page. The sample web searches there can be used to find 'current' media-capacity data for various sizes of storage-devices. Alternatively, some conversion factors could be presented --- in photos/Gigabyte, songs/Gigabyte, videos/Gigabyte --- for various sizes of photos, songs, and videos. Those conversion factors could be multiplied by the capacity of a storage device (in Gigabytes) --- to arrive (roughly) at the number of photos or songs or videos that could be put on that particular storage device. That is another project for a future date. Perhaps the WEB SEARCHES section below can be used to find such conversion factors. A first attempt at some conversion factors is shown in a section below the table.
NOTE1 (data accuracy disclaimer Actual number of photos, songs, minutes will vary depending on camera/recording-device model, format resolution, file compression, and usable capacity. Actual usable memory capacity may be somewhat less than the nominal memory size of a memory chip/card/device.
1 MB = 1 MegaByte is about 1 million bytes.
NOTE2 (data variability The photo-count figures for 3, 5, and 8 megapixel cameras come from two different sources and indicate the variability of information that you may see in tables like these. The figures in parentheses are from a Circuit City Sunday newpaper ad insert. The other figures are from an information card that came with a Lexar Platinum II SD memory card. There seems to be too much discrepancy in the 5 megapixel data. This data may be compared with a 3rd source of information, then replaced or augmented. |
Memory card size (to the right) Photo size (below) |
256MB | 512MB | 1GB | 2GB |
---|---|---|---|---|
3 megapixel, ca. 1.0 (or 1.1) MB/photo |
(226 to) 240 photos |
(452 to) 490 photos |
(905 to) 996 photos |
(1808 to) 2000 photos |
4 megapixel, ca. 1.4 MB/photo |
(180) photos |
(381) photos |
(762) photos |
(1524) photos |
5 megapixel, ca. 2.7 (or 1.7) MB/photo |
95 (to 149) photos |
195 (to 298) photos |
395 (to 595) photos |
800 (to 1190) photos |
6 megapixel, ca. 2.2 MB/photo |
(119) photos |
(238) photos |
(476) photos |
(952) photos |
8 megapixel, ca. 3.7 (or 3.2) MB/photo |
69 (to 79) photos |
143 (to 159) photos |
290 (to 317) photos |
582 (to 635) photos |
10 megapixel, ca. 4.8 MB/photo |
53 photos |
109 photos |
221 photos |
444 photos |
Songs size (below) | 256MB | 512MB | 1GB | 2GB |
MP3 (128kbps, 4 minute), ca. 4.4 MB/song |
58 songs = 3.8 hrs | 120 songs = 8.0 hrs | 243 songs = 16.2 hrs | 488 songs = 32.5 hrs |
Video size (below) | 256MB | 512MB | 1GB | 2GB |
MPEG4 (or 3GP2 format), ca. 0.7 MB/min. of low-res video |
364 min = 6.0 hrs | 748 min = 12.4 hrs | 1518 min = 25.3 hrs | 3049 min = 50.8 hrs |
Conversion Factor Observations: If you look at the '1GB' column in the table above, you can arrive at (rough) conversion factors to use to estimate the capacity of a storage device, if you know the approximate capacity of the device in Gigabytes.
Number of photos from a
Number of photos from a
Number of photos from a
Number of photos from a
Number of photos from an
Number of photos from a
Number of 4-minute
Number of minutes of High-resolution video (1920x1080 pixels) can be expected to be roughly one-seventh of that figure --- or about 200 minutes (3.3 hours) per Gigabyte. |
Some LINKS to find MORE You can try a WEB SEARCH on keywords such as: And you can try the
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