Monday, 25 February 2013
According to Wikipedia, a full-frame camera DSLR cameras use the same sensor size as the standard 35 mm film frame size (36 × 24 mm), in contrast to the smaller sensor cameras use, especially size is equivalent to the size of APS-C film is much smaller than the full frame 35 mm.
There are two commonly used terms when it comes to the size of the camera sensor (sensor) which is the full-frame sensor (full frame) and APS-C (Crop). To determine which is the full-frame sensor and which is APS-C, it is based on the standard film frame of the camera body 24mm x 36mm (35mm).
Compare the length of the diagonal full-frame sensor than APS-C: 43.27mm: 28.43mm ~ 1.5 times.
If the camera sensor size smaller than the size of the standard 24mm x 36mm film frame, the rate is less than that shown by the crop factor parameters 1.x. For example, the APS-C sensor crop factor of 1.5 means that the length of the diagonal of the sensor camera that is shorter than the length of the diagonal sensor on the camera body 24mm x 36mm is 1.5 times.
Advantages of the full-frame sensor
As explained above, conventional cameras using APS-C sensor size smaller than on a full-frame camera so the photo quality is also inferior to photos from full- frame. The reason is the larger full-frame sensors will collect more light, better ability to handle noise, true color than the photos from the APS-C.
In addition to superior photo quality, full-frame camera has more advantages than the APS-C camera lens focal length does not change. For example, along with the Canon EF 70-200mm lens, if mounted on a full-frame shooting will achieve the correct focal length that manufacturers offer but with the APS-C, the focus has changed. The lens changes the focal length on an APS-C will be equal to the focal length of the lens manufacturer multiplied by the crop coefficient corresponding factor 1.x, for example with the Canon 1.6x crop factor, the range of target distance will be 112-320mm.
This changes the focal length both "benefit" and "harm" to the user in different situations. In case you're shooting distant subjects using telephoto lens like the Canon EF 70-200mm, thanks some crop factor 1.x you will have a longer focal length, but also more vulnerable when you use the lens wide angle for landscape, architectural point of view was narrowed when the focal length changes.
Full-frame sensor for better image quality, more realistic colors, but also the production cost is more expensive than APS-C should normally only fitted on high-end digital cameras professional line of some prices thousand dollars or more. A number of full-frame cameras like the Canon EOS 5D Mark II, 5D Mark III, Nikon D800, Nikon D4 ...