Any stain or mark on the surface of a binocular lens tends to scatter light, thereby producing low-contrast viewing. Bird watching binoculars need to be good in all light conditions, from dawn to dusk, and even have limited night vision.
The same goes for hunting binoculars, and in both cases they should be lightweight, but probably with a smaller magnification, and larger objective. To correct this, two prisms are placed inside the binoculars, between the objective and the eyepiece. For some people, astronomy will be a fun hobby, but for some dedicated people, they soon pick up the drive, and buy a telescope which is suited for astronomy and looking at objects in the night sky.
Glass also has a tendency to reflect as much as five percent of the light that arrives at its surface back towards the light source. Earliest documented history shows Hans Lippershey as the first telescope maker including both monocular and binocular variety even though he is not the first person to actually design and produce such a device. It s beautiful with the naked eye, and even more grand when we can see it enlarged.
I hope these reviews and opinions help you in your research towards buying a new pair of binoculars, Nikon are a well established and respected company, and the Leupold range are just spectacular. If you are going to take up bird watching, trust me, you will love it.
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