The neutral density filter is indispensable for landscape photographers.
Just to clarify, the ND filter should not be confused with the graduated filter (also known as the split ND filter), which is another beast with entirely different applications. ND filters are used to dial down daylight. And particularly around water …
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GPS Based Early Warning System Being Developed by NASA and Partner …
… tsunami waves. As Earth’s atmosphere behaves as an analog low-pass filter, these high frequency waves do not transmit into the atmosphere. … Dr. Komjathy is a graduate of the Department of Geodesy and Geomatics Engineering at the University of …
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