You are looking to buy a new camera, and as you are searching through your options, the term "digital SLR" keeps coming up. You may notice these cameras tend to be more expensive than regular compact digital cameras, but what is a digital SLR camera, and is it worth its higher price?
How Does the Digital SLR Camera Work?
The first thing we need to know if we are going to answer the question, "What is a digital SLR camera?" is what the term 'SLR' literally means. SLR is an acronym that stands for "Single Lens Reflex." These cameras use a reflex mirror system to reflect the image that will be captured into the camera's optical viewfinder.
When you take a photo with a digital SLR camera, light passes through the lens and onto a mirror that reflects this light through a focusing screen to a pentaprism, which is a block of glass that reflects the image in such a way that you can see it through the viewfinder in the correct orientation. When you press the button to take a picture, the mirror flips up and the shutter opens to expose a digital sensor to the light.
SLR Cameras and Speed
So what are a digital SLR camera's advantages over a compact digital camera? One of the main advantages is that the optical viewfinder shows the image exactly as the camera will capture it, without the lag time generally associated with LCD viewing screens. This is an especially important feature if you are taking action in which the object you intend to capture is constantly moving, such as a sports player or an animal in the wild.
Digital SLR cameras are also faster than compact cameras because they have a manual shutter. Compact cameras do use a shutter to take photos, but they electronically activate a sensor every time you take a picture. This creates a lag of a few seconds between the time you press the button and the time your camera actually captures the photo. The shutter on a SLR camera is instantaneous, allowing you to capture the exact moment you intended.
SLR Cameras and Light
Another advantage of SLR's is that they take better photos in low-light situations than compact cameras do. When you take a picture in a low-light setting without using your flash, the shutter of your camera automatically stays open longer to allow the sensor to gather more light. Because the shutter is open longer, however, pictures often turn out blurry if the subject moves at all or if you are holding the camera in your hand.
SLR cameras have a feature called ISO that makes the digital sensor more sensitive to light so the shutter does not have to stay open as long. The higher the ISO number, the faster the sensor can absorb light. Although high ISOs also tend to produce somewhat grainy pictures. SLR cameras are fairly good at filtering out this digital "noise" so that with a good camera you will probably not see this grainy quality until you get to an ISO setting above 800.
Lenses
SLR cameras also allow you to change lenses on your camera depending on what you are taking a picture of. A landscape photo should use a different lens than a close-up picture of a flower or insect, and the SLR allows you the flexibility to change lenses for these different situations. The large lenses on SLR's also make them much heavier and larger than a compact digital camera, however, so if you are looking for a camera that will fit in your pocket, an SLR is probably not the right camera for you.
So is the digital SLR camera something that is worth shelling out hundreds of dollars for? Well, it depends on what you need your camera to take pictures of. If you take a lot of action shots or need to take photos in low-light settings, it might be worth it to spend the extra money. Now that we have answered the question, "What is a digital SLR camera?" it is really up to you to decide if this kind of camera is for you or if a regular compact digital camera will serve your needs just as well.
Article Source: //EzineArticles.com/6596634
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