Thursday, March 19, 2009

Night vision binoculars - OWL EYE!!

Binoculars for bird watching are classified into two: the first giving us the magnification and the second, the diameter of the lens. It is a good idea to keep the magnification of bird binoculars fairly low, usually around 8 times, in order to lessen the impact of natural hand shake, and to keep the field of vision sizable. A larger diameter gives a clearer image because it traps more light, and it also widens your field of view. The most popular are 40mm and 42mm, because any larger can make bird binoculars heavy and hard to use. Many novice bird watchers make the mistake of buying binoculars with a high magnification thinking that the greater power will enable them to see birds more clearly. However, although the birds will appear closer and larger, as magnification increases your field of view decreases and slight movements made by an unsteady hand or a gust of wind are greatly exaggerated. Do not choose zoom binoculars for bird watching - they do not give as good an image and are more likely to develop faults.

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