Images created with a digital zoom are fairly blurry. NiMH Batteries - Nickel metal hydride rechargeable batteries, the optimal batteries for use with digital cameras. Optically zoomed images are much sharper than digital zoomed images. Resolution - The amount of detail in a digital camera image. The larger the numbers, the sharper the image.
Resolution is measured in pixels which are simply colour dots that make up the picture.
Burst Rate - The number of pictures that a digital camera can capture in rapid succession, and the time necessary to do so. This is similar to a 35mm camera's continuous mode, except the number of shots a digital camera can take in this manner is limited by its on-board storage and image processing capability. A good yardstick of picture quality for digital cameras, being indicative of how big the final picture can be before the overall quality, or particularly sharpness, begins to degrade objectionably. LCD Screen - Most digital cameras have a LCD screen to complement the optical viewfinder. LCD screens take up a lot of battery so it is important to have spare batteries or use the optical viewfinder instead on the camera where possible.