Even more confusing than the process of deciding which model of digital camera to buy is the process of selecting a memory card for your camera. This is compounded by the fact that often your first digital camera will not come bundled with a memory card, and you will need to purchase it separately.
Important characteristics for a memory card, beyond either or not it is compatible with a given digital camera model, are the file storehouse capacity (generally measured in gigabytes), and the file exchange rate (the higher the better). As an example of the numbers involved, a 6 megapixel resolution camera can store about 320 high resolution Jpeg images on a 1Gb memory card. A 2Gb memory card would hold 640 images, and so on. But note that if you store images in the camera's Raw image format as well, your memory card will accept a significantly smaller number. This is why high-capacity memory cards are favored when you can afford them.
The wide range of memory card types and makers reflects the relative immaturity of the field of digital photography. The distinct fellowships are still battling for shop dominance, and no acceptable has yet been established for memory cards.
However, there are presently two main types of memory card that seem to stand above the others. These two types are known as compact Flash (or Cf) and obtain Digital (Sd). For the remainder of this record I shall restrict my conference to these two card types. Most digital cameras will keep only one memory card type, though the very high end digital Slr models, like the Canon Eos-1Ds Mark Iii and the Nikon D3 keep both Cf and Sd memory cards for maximum flexibility.
Compact Flash, which is currently the most favorite memory card type for digital cameras (due to its historically superior capacity and reliability), was introduced by SanDisk in the mid nineties, so it has been nearby for a while. All the major digital camera brands employ Cf memory cards on at least some, if not most, of their models. SanDisk produces memory cards that can hold up to 8 Gb in file size.
For population who need to reel off a great number of shots in order to get the one or two great ones (sports photographers come to mind here), the high capacity cards are highly convenient. exchange rates are specified in term of the incremental "1x" rate of 150 Kb/s. A "12x" card would therefore be capable of a maximum file exchange rate of 1800 Kb/s. Cf memory cards come in one bodily size only, though with two possible thicknesses, designated as Type I and Type Ii, with the second being the thicker. A Type Ii memory card will not fit into a Type I slot, so be sure to get the exact Type when selecting Cf memory cards.
Because Cf memory cards are relatively large (1.43 inches by 1.68 inches) they are less likely to be found in use with smaller point-and-shoot digital camera models. Instead, their bodily size makes them more suitable to the digital Slr models.
The obtain Digital memory card name derives from the fact that it was originally introduced as a means to securely store music files. The idea was that music files would be copyright protected and exiguous entrance would be permitted to files stored on Sd disks. But the notion was short-lived when the protection protocol was cracked not long after its introduction. Because of the tight relationship with the music industry, slots that accept Sd cards also accept other devices like Bluetooth antenna, Pdas, mobile phones, and so on.
Sd memory cards are used by all the top digital camera brands, including Casio, Canon, Nikon, Pentax, Kodak, Panasonic, and Konica Minolta.
Like Cf memory cards, the Sd card exchange rate is measured in the same units of 150 Kb/s. Due to the smaller bodily size of the Sd memory card (1.26 inches by 0.94 inches) the maximum file storehouse capacity has historically been a great deal lower than for Cf cards. Typically nearby 1 Gb. However, Sd has now targeted the high capacity market, and to do so it has had to shift to a new file format. Unfortunately this was done without a corresponding convert in bodily dimensions of the card, which has meant that older cards are often inserted into newer Sd card slots that cannot read them, and vice versa, causing some blurring to consumers.
Once you have a memory card that is full of images, you are going to want to exchange the files to your computer, where you might process them with a software application like Photoshop, or you might send them on to someone else for the editing. One common way to exchange images from your memory card is to use a card reader. This is a small device, almost of ipod size, which contains one or more memory card slots at one end, and a cable at the other end which connects to the Usb port of your computer. In this way, your card reader naturally becomes other port from which to read data onto your hard drive.
If your digital camera does not ship with a card reader, it almost for real is accompanied by a cable which can be used to join together the Usb port of your Pc to the camera. In this way, your camera doubles as the card reader gadget that you might otherwise have used to read the memory card.
Other devices, such as photo printers, are likely to have memory card slots built right into them, so that they can accept a memory card directly. Some devices are even capable of receiving a WiFi signal sent from a camera so that files can be transferred "over the air".
No matter what the model of your digital camera may be, it is always a great idea to first consult the user hand-operated to see what your options are about memory cards. Never make the assumption that one memory card is likely to work for your camera naturally because a sister model, or immediate predecessor model, uses the same memory card. It is likely the case, but it pays to find out before you order new cards.
You can also visit the SanDisk site and check memory card / camera model compatibility. SanDisk lists all the major camera manufacturers and for most current camera models, gives the SanDisk cards that can be used with them.
Photography - comprehension Memory Cards