by cgu-skolah Thu Jan 14, 2010 6:19 am
"ED" is "extra-low dispersion" glass, a more expensive and higher quality glass that reduces chromatic aberration, in which light of different colors takes different paths through the lens, which would result in a dot of white light being fuzzed up by the time it reaches the film or sensor.
"IF" is internal focus, meaning that the lens does not change physical length as you focus on subjects that are closer or farther away.
"DX" are Nikon's lenses that only work on its small-sensor digital SLR bodies, i.e., they don't cast a large enough image circle to be used on a film camera.
"FX" refers to the full frame sensor
"G" lenses are Nikon's newest lenses. They don't have an aperture ring, which is a shame because it means that you are forced to adjust the aperture with a command wheel on the camera. The G lenses don't work on older bodies.
AF-S is "silentwave motor". Old-style Nikon autofocus lenses did not have motors in the lens, but relied on a screwdriver blade in the camera body to turn the focus ring. An AF-S lens has a built-in ultrasonic motor, a technology copied from the Canon EOS system. When using an AF-S lens, the photographer can push the shutter release (or a button on the rear of the camera, if a custom function is set) and let the autofocus system do its best, then touch up the focus manually by twisting the lens ring. The AF-S lenses also focus faster and more quietly.
sorry... tak pandai nak translate.... lebih kurang citer dia camni laaa.
Tapi kalau berminat ngan G lens.... reganya pun bleh tahan.... sebab nikkor lens antara lens yang ribu-ribu bintang mari punya..
sebabtu ada sesetengah photographer switch ke 3rd party lens cam sigma atau tamron sebab 3rd party ni lebih murah.
Kalau ada pro photographer kat sini tolong betulkan kalau silap.
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