If you're in doubt about this, look for a camera that can store images on your hard disk in JPEG or TIFF format. Virtually all graphics programs can use these files without further conversion. Digital images can occupy huge amounts of memory and disk space. So developers have invented ways to compress them. The problem is that the more a JPEG image is compressed, the more detail and color fidelity it loses.
Some cameras use maximum compression to make room for more photos.
Others give you a choice of compression ratios. With lower compression, you'll be able to store fewer images, but the quality will be higher. If you can afford it, get a camera that lets you decide. Digital cameras are slow, period. They can take anywhere from five seconds to half a minute to store each picture once you've pushed the shutter button.