Digital cameras today offer superb image quality that competes directly with film.
These cameras look and act like traditional cameras with a few extra features. Tricky camera designs are quickly leaving the marketplace because photographers want to take pictures and not be bogged down by hard-to-use technology.
Many things about digital cameras are identical to film cameras, a few things are slightly tweaked from film expectations, and a number of features are unique to digital photography. Some of the big differences can actually help you take better pictures than you ever did with a film camera.
For quality results from any camera, the basics of photography still apply no matter how an image is captured. A tripod is always important if slow shutter speeds are needed and big telephoto lenses are used. Fast shutter speeds remain a key way to stop action, and f-stops continue to affect depth of field. The important parts of a scene still need to have the focus centered on them, and dramatic light always helps make for dramatic photos.
The "digital" in digital camera has caused even experienced photographers to worry that this new technology will be difficult to master. But consider this: No beginner ever picked up a camera and knew what all the controls did. For the serious photographer, f-stops and shutter speeds were definitely not instinctive.
Types of Cameras
Digital cameras come in a variety of forms, from point-and-shoot pocket cameras to advanced digital SLRs. There is no right or wrong type, though a specific one may be best for you and your photography.
Simple point-and-shoot digital cameras can give surprising quality when they have the right lenses and sensors. Because they are totally automatic in focus and exposure, they just have to be pointed at a subject and clicked. They have limited capabilities for controlling the image, although even very inexpensive cameras often have white balance controls. Some are exceptionally compact, able to fit easily into a shirt pocket, making them ideal cameras to keep at hand so you won't miss a great photo opportunity.
Advanced point-and-shoot cameras are similar in that they mostly rely on automatic controls; however, this group tends to add special features to make the cameras a little more flexible. Such features include exposure compensation, more white balance controls, limited manual settings, and more. Still relatively inexpensive, these cameras can be a good introduction to digital and are perfect for the families of serious photographers.
Interchangeable-lens, digital SLRs offer all the controls of a 35mm SLR, including lenses that give you a wealth of focal-length possibilities. These cameras are definitely bigger than the other digital cameras. They include complete and extensive photographic controls, the best in image-sensor and processing technology, high levels of noise control, and more. The LCD panel on the back of an SLR can be used only for reviewing images, since the sensor cannot provide "live" images due to the mirror design.
Read the full article in National Geographic