This is a brief excerpt from PhotoFocus
Some cameras use Compact Flash (CF) memory, but most point and shoots, compact cameras, micro four thirds cameras and even some DSLRs use SD cards. They are also used in many cell phones, GPS units and other electronic devices.
Since CF cards have been around longer, most photographers are familiar with them. But when I ask photographers detailed questions about SD cards, I find there’s some information commonly missing. So this is a quick and dirty SD primer. I think these are the five MOST important things to know about SD cards.
1. There are several types of SD card.
SDSC is the oldest and original format for SD cards. These cards are slower than most new SD cards, but very inexpensive and reliable.
SDHC are high-capacity SD cards that typically get better speed ratings and hold more data – up to 32GB. They typically cost more tan SDSC cards and are generally very reliable.
SDXC cards are the newest SD format (used in cameras) and offer much larger capacities than SDSC or SDHC. SDXC will hold up to two terabytes of information. Although a 2TB card would be very expensive (as in it would probably cost more than many of …
By: scottbourne
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