Digital Camera Evaluation Needed Before Purchase
While picture taken with a digital camera may appear to be smooth in print, the picture is actually made up of millions of small squares called pixels. This would be the equivalent to the resolution in pictures taken with a film camera. The higher the pixel rating of a digital camera, the better quality the picture will be in print. Part of your digital camera evaluation should be the number of pixels. They are available from one million pixels to over 14 million pixels and, as with most items electronic, the higher the pixel rating, the higher the cost will be.Another important part of your digital camera evaluation would be its ability to gather light during the picture-taking process. With film cameras the ISO standard is used to state that ability. Portrait photography was typically done with an ISO rating of 100, which rendered high-quality prints from the negative. For outdoor use the typical ISO rating is 200 and indoors, with a flash 200 ISO could also be used, however an ISO 400 film is considered an all-around film for action pictures outdoors or for pictures taken indoor under normal light, without a flash.
Digital cameras have similar settings, especially on those that allow for adjustable lens opening, called the f-stop for depth of field, ad shutter speeds. Consider in your digital camera evaluation that the higher the f-stop, the more of the image will be in focus, but your shutter speed will be slower. Anytime your shutter speed is below 1/125 of a second you run the risk of the shot being out of focus due to hand, or subject, movement.
Look For Burst Shot Capability
Another part of the digital camera evaluation is burst capability. This refers to the picture being taken in short bursts, maybe three shots in a second or two. Using a digital camera there is sometimes a delay from the time you push the shutter and the time the picture is actually taken. This delay can cause difficulty in getting the picture you want, especially with action photography.
But performing a complete digital camera evaluation before you make a decision can insure you have the features you want, and do not end up paying big money for other features that you may never use.