Cameras: Digital Cameras - Top Picks
Digital cameras have completely changed the market for recreational photographers and hobbyists. Improvements in digital camera technology have even lured many professional photographers to move into the digital realm. Digital photographs are still not able to compete with larger format, high-end, professional film cameras but they are closing in.
When compared with 35mm film cameras, however, high-end digital versions produce images of even higher quality. A six megapixel camera is approximately equal to a good 35mm film camera; whereas new 12-megapixel cameras mostly blow them away. Eventually, digital pictures may be able to compete with film formats larger than 35mm.
The major distinction between similar digital cameras is their megapixel capability. The megapixel is the number of pixels (picture elements) contained in a picture taken with that particular camera. One megapixel contains approximately 1,000,000 pixels and 12 megapixels contain approximately 12,000,000 pixels–though these numbers can be misleading.
Digital Cameras and Megapixel Confusion
The megapixel ratings of digital cameras are misleading because individual photosites are made up of several pixels to capture different colors. Thus some cameras marketed as 12Mp may only have 6Mp-worth of actual resolution. Companies almost always use the higher number, so do not take the Mp number at face value.
Additionally, pixels are not all the same size. Therefore sensors of the same size may have widely divergent pixel counts and cameras with the same pixel counts may have widely divergent sensor sizes. (Imagine the sensor as a wafer containing all the pixels.) In general, a 6Mp camera with larger pixels will take better pictures than a 6Mp camera with smaller pixels.
There are still more considerations for judging digital cameras. Larger sensors and higher pixel counts make for better blown-up images (8×10 and larger). These considerations are less important for small, snapshot photography. True 3Mp images are usually enough for small photos (less than 3×5), even for professionals.
The Most Important Factors of Digital Cameras
Digital cameras must be judged on more than just the megapixel rating. A cameras performance is based on its pixel count, sensor size, lens quality, apertures, and shutter speeds. Every link in this chain is important to the final result. A true 12Mp camera with a crummy lens will deliver crummy pictures.
With digital cameras, if you do a little bit of homework and keep your intended usage in mind, you mostly get what you pay for. A low-end camera with a good lens and larger sensor can perform as well as a mid-range camera. In the consumer market, Canon cameras sell the best; followed–in order–by Nikon and Sony cameras. These three companies dominate the consumer market.