| review: binocular Nikon 7x50 CF WP (appr. € 250,-) |
Specification of the Nikon 7x50 CF WP (marine)
- Magnification: 7x
- Diameter objective lenses: 50 mm
- Field of view: 7 degrees
- Weight: 1100 gramms
The 7x50: best choice for observing in twilight and the dark
In general a 7x50 binocular is fantastic for observing in the twilight or the night sky.
Unexperienced observers very often do think there is a an electronical light amplification inside!
Where does that come from?
The exit pupil from a 7x50 will be 7.1 mm.
This is actually the maximum size a human's pupil can expand to.
In other words: The light of the 50 mm objective lens will be concentrated to the 7 mm of the eye's pupil without loss of light.
Effectively there is really MUCH more to be seen compared to the naked eye.
The 7x50 has a magnification of 7x.
That doesn't seem to be vey impressive.
But keep in mind that the fun with a pair of a binoculars is that you hold them in your hands.
There will be no tripod or stand.
And 7x is the maximum I can hold still for a longer time.
A magnification of 10x is already leading to blurred images due to the shaking of my hands.
That is why I love the 7x50 so much.
Why the water-proof "marine" version?
During night time observation the increasing humidity is a common problem.
Very often the lenses will dew up.
This will decrease the performance of the optics severley, of course.
If the lenses will dew from the outside you can wipe it away with a special lens cleaning napkin.
But what, if there is fog from inside?
Then you will be lost... the end of the night.
The Nikon 7x50 WP comes with O-ring sealings and Nitrogen gas included.
This is a very effective protection against dew from inside.
Optical quality
This Nikon bino has fully multicoated optics for the brightest possible image and almost no loss of light.
Optics from Nikon is very well known in the area of objective lenses for cameras.
And their binoculars are just at the same level: close to perfection.
What will be visible in the nightsky?
Magnificiations below 50 are not allowing to watch the planets, of course.
But that isn't what binoculars are designed for.
The domain of the 7x50 is cruising the Milky Way - with virtually 100.000s of stars visible.
The brighter Galaxies like Andomeda will become visible.
Same is true for the brighter Nebula like Orion.
And most of all there will be uncountable open clusters like the nothern treasure (double cluster) which cannot be spotted in most of the telscopes because of their narrow field of view.
Conclusion
These Nikon binoculars provide an excellent price to performance ratio.
A 7x50 is a must for anybody who is interested in nighttime observation.
Give it a try!
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