Built-in Memory

Digital cameras may have a built in memory capacity of 8MB to 1GB. A digital camera with a 16MB memory is able to store up to 110 digital photos. However this number is valid if you only use the lowest resolution mode. If you take pictures in high resolution, this number could go down to as low as 2 digital photos for the 16MB memory card.

Most consumer digital cameras use external memory that allows you to use a memory card which you can remove when it's full. SmartMedia, Secure Digital, Compact Flash, and Memory Stick are the most common technologies. With this memory card technology, you can easily insert a fresh memory card and continue taking shots. Some digital cameras only have built-in memory and don’t have a memory card slot, which is a good reason not to choose that camera.

You can save your digital photos in two ways; as compressed and uncompressed files. With the uncompressed format, you can save a maximum of image-forming information for color reliability and clearness. And with the compressed format you can decrease the file size and occupy less space on your disk.

Below is a chart that will help you determine how many digital photos you can store at different memory sizes on a typical consumer digital camera.   
 

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