| Know Some Features of Best Digital SLR |
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| Written by Webmaster | |
| Monday, 04 January 2010 | |
By Jessica Thomson You might have experienced numerous effects and features of many digital cameras. And we have been so amazed with its cutting edge technology and outstanding applications. So what is this technology and concept behind these amazing features that give us ample options to get the best pictures? And how does it work to give such an outstanding quality? Lets dwell upon the basic construction of Digital SLR Cameras.
Sensor size As the size of image sensors varies, the largest are the ones that are used in medium format cameras. They are used through digital black that can be used as a substitute to a film black. Except the medium format, the largest sensors has been referred to as full frame which are the size of 35 mm film i.e. 135 film of image format 24 36 mm. Obviously these are mainly used in highly expensive digital SLRs like canon EOS, Nikon D700, Nikon D3 and Sony alpha 900. But many recent DSLRs use smaller sensor mainly APS-C size of 22 mm 15 mm. This is smaller than the size of APS-C film frame. Recent DSLRs uses much larger sensors even than the digital cameras which is 1 /2.5 with 3% of a full frame sensor area. The image quality largely depends on sensor size which determines its low noise, higher sensitivity and increased latitude. Depth of field DSLRs lenses typically have a wider range of apertures ranging from f/1.0 to f/32. The lenses used in digicams generally limits to the aperture size of f/2.8 to f/5.6 because lens designs of small sensor in digicams already produce diffraction blur. And this diffraction blur is bigger than a few pixels of f/5.6 which consequently generates sharp images. The apertures of digicams gives mush more depth of field than equivalent angles of view on DSLR. Angle of view The angle of view of a lens depends upon its focal length and the image size of a camera. A sensor smaller than 35 mm film format gives much narrower angle of view for a lens of a given focal length than the camera with a full frame sensor. The factors by which the focal length of lens can be multiplied to give full frame equivalent focal length are referred to as crop factor and focal length multiplier. So the DSLRs with crop sensor size have more depth of field than the camera with 35 mm sized sensors for a given angle of view. You can calculate the amount of added depth of field for a given focal length by merely multiplying the depth of field by this crop factor. Professionals who want to isolate a subject from the background usually prefer shallower depth of field to portray their creativity with such cameras. With such amazing technology and features, you can enhance the look of every picture and memory to a large extent. The innovative options are aptly installed in these devices that make your picture quality extra-ordinary. For more insights and further information about Digital Cameras visit our site http://www.camerahut.com.au/ Tag it:                  |
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| Last Updated ( Monday, 04 January 2010 ) |
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