Slr Cameras Nikon
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 Nikon D90 123 MP Digital SLR Camera Black Body Only $459.00 |
 Nikon D40x 102 MP Digital SLR Camera Black $350.00 |
 Nikon D40 61 MP Digital SLR Camera Black Kit w 18 55mm Lens $329.99 |
 Nikon D100 60 MP Digital SLR Camera $171.00 |
 NIKON D70 Digital SLR Camera 61 mp 18 Screen Body Only $124.22 |
 Nikon D3100 Digital SLR Camera Body 18 55mm VR 55 200mm VR Lens USA $599.95 |
 Nikon D3000 102 MP Digital SLR Camera Black Body Only $239.00 |
 Nikon D200 102 MP Digital SLR Camera with MB D200 battery grip $450.00 |
 Nikon D3100 142 MP Digital SLR Camera Body 1080p HD $359.95 |
 Nikon D3 121 MP Digital SLR Camera Black Body Only $2,295.00 |
 Nikon D5000 Digital SLR Camera Body $340.39 |
 Nikon D3100 142 MP Digital SLR Camera Black Kit AF S DX 18 55mm VR Lens2SD $525.00 |
Slr Cameras Nikon
Find out more about Slr Cameras Nikon below
Canon Vs Nikon - Digital SLR Camera Comparison by Denny Heinonen
An SLR digital camera is one that uses a single-lens reflex and does not use film but stores the pictures as digital or image files. In order for the single lens reflex to work, mirrors are used within the camera to direct light from the lens to the back of the camera and the viewfinder.
The first digital camera was made by Kodak in 1975, with the first SLR model created by Sony in 1981. The basics include a mirror that reflects light in a 90 degree angle from the lens to the view finder. This light is then reflected three times so the person can see the image properly. When the picture button is pressed the mirror swings in an upward motion which causes the aperture to become smaller. The shutter opens and then light touches the image sensor. A 2nd mirror will swing over the image sensor which will end the light exposure and the mirror swings back into place. In this period there is no image through the viewfinder, known as viewfinder blackout. This entire motion happens very quickly with SLR cameras, as this motion can occur as much as 10 times in a second.
The reason digital SLR cameras are preferred by professionals are that the photographer has a very accurate preview of the actual picture that is being taken. The depth of field refers to the distance between the farthest and nearest object in the picture. These cameras also allow for accurate viewing of depth of field and the lenses can be interchanged. The mirrors used in the camera can be either pentaprism or penta-mirror. Entry level versions typically use a penta-mirror, which is a prism that has 5 sides. Instead of being made of glass the penta-mirror is made plastic which is less expensive and much lighter than pentaprism. The pentaprism is in the same shape as the penta-mirror but it is made of glass. When light passes into the prism it bounces off the back wall, changing light direction by 90 degrees.
The ability to change lens will depend on the camera maker and the type of lens. The lenses must have the same shape so that it fits into the lens mount on the camera. Many manufacturers use lenses that can fit in many cameras while some manufactures make lenses that are proprietary in which case will only fit in that manufactures camera. The proprietary nature of some SLR digital camera manufacturers would be one of the main reasons that once a photographer makes a choice in a particular camera he stays with that brand as all of their lens will only work with that brand.
Keeping with the same brand of camera helped many photographers make the switch from film cameras to a digital camera. In most cases all the photographer needed to do was change the "body" of the camera as the lens would be interchangeable between the film camera and the digital camera. This would only work on the newer film cameras that had more automatic features than the older film cameras that were manual in operation.
About the Author
Denny Heinonen is much passionated about SLR Digital Cameras. His interest and passion towards cameras helps in providing the great information. Check out the awesome products from his gallery at: SLR Digital Camera