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Bushnell Powerview 8x21

Bushnell Powerview 8x21
£30.90
Bushnell Powerview 8x21
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Type:
roof binoculars
Brand:
Bushnell
Series:
Powerview
Warranty:
30 years
Measurements:
30×105×100 mm
Colour:
black
Waterproof:
No
Tripod connection:
No

Bushnell Powerview 8x21
Bushnell Powerview 8x21 is part of the Powerview series, the entry level series from Bushnell. The viewers come with a variety of magnifications and have a sharp price/quality ratio. Depending on the type, the coatings of the glass are multi-coated or fully multi-coated. The lens coatings are designed to guide the light captured by the lens to the eye in the most efficient way. On the outside, almost all models have an extra rubber grip layer so you have (and keep) everything completely under control! In the middle is a convenient and easy-to-handle focus knob to get the sharpest possible view of your target. The viewers are provided with fold-down eyecups so you can use the viewer in no time even wearing glasses. Bushnell Powerview 8x21 is the lightweight among the lightweights

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Bushnell Powerview 8x21
Bushnell Powerview 8x21 is part of the Powerview series, the entry level series from Bushnell. The viewers come with a variety of magnifications and have a sharp price/quality ratio. Depending on the type, the coatings of the glass are multi-coated or fully multi-coated. The lens coatings are designed to guide the light captured by the lens to the eye in the most efficient way. On the outside, almost all models have an extra rubber grip layer so you have (and keep) everything completely under control! In the middle is a convenient and easy-to-handle focus knob to get the sharpest possible view of your target. The viewers are provided with fold-down eyecups so you can use the viewer in no time even wearing glasses. Bushnell Powerview 8x21 is the lightweight among the lightweights

  • Particularly suitable for performances
  • Also for Sports & Outdoor
  • With 8x magnification and 21mm lens diameter
  • 30 years warranty
Read more about this product

Bushnell Powerview 8x21

Only 195 grams!

4.8 / 5 - 1 review

Product description

Features

  • Particularly suitable for performances
  • Also for Sports & Outdoor
  • With 8x magnification and 21mm lens diameter
  • 30 years warranty

Bushnell Powerview 8x21

Bushnell Powerview 8x21 is part of the Powerview series, the entry level series from Bushnell. The viewers come with a variety of magnifications and have a sharp price/quality ratio. Depending on the type, the coatings of the glass are multi-coated or fully multi-coated. The lens coatings are designed to guide the light captured by the lens to the eye in the most efficient way. On the outside, almost all models have an extra rubber grip layer so you have (and keep) everything completely under control! In the middle is a convenient and easy-to-handle focus knob to get the sharpest possible view of your target. The viewers are provided with fold-down eyecups so you can use the viewer in no time even wearing glasses. Bushnell Powerview 8x21 is the lightweight among the lightweights

Magnification

The Powerview series is available in a wide range of magnifications; if an object is farther away it is wise to select a high magnification; however in practice, a magnification of 8x or 10x is usually more than enough. These viewers have relatively small objective lenses, which makes them lightweight and compact in size. They are also easy to store and carry.

Twilight factor

The twilight factor is calculated by multiplying the lens diameter and magnification. Then you need to take the square root of this figure (this is also indicated in our specifications). If you are in densely forested areas, or want to see animals that only appear during dusk (e.g. deer) it is wise to go for a viewer with a twilight factor of at least 15 (preferably higher). The twilight factor is also influenced by the coatings on the lens, the type of glass used and the coatings on the prisms. More expensive binoculars may have a lower twilight factor but usually give a much brighter picture than cheaper binoculars with a higher twilight factor.

Weight and dimensions

If you travel or go hiking a lot then compact binoculars are recommended. These are easy to carry and not so heavy on the neck, but a compact viewer has a smaller lens and therefore a lower twilight factor. Also, the field of view is much smaller when you go for a high magnification (higher than 9x)

Porro or roof prism viewer?

The Powerview series is available as porro binoculars and roof prism binoculars. Porro binoculars (see diagram below)are broader binoculars and based on the first design of binoculars. The Porro consists of two rectangular prisms attached together so that the light is reflected three times, and this results in an ultra correct image. The conventional binoculars use Porro Prisms.

A roof prism viewer uses a roof prism (see diagram below). This design is technically more complicated than a Porro prism design, because it uses prisms which must have very accurately polished edges. The light is reflected four times. This design is more compact, but because the path of light is longer and the prisms more complicated, the quality of the glass and the manufacturing must be of higher quality than that of the Porro Prism design. Only then can an equal performance be achieved. Roof Prism binoculars have straight tubes as shown in the picture.

Product specifications

General

Type
  • roof binoculars
Brand
  • Bushnell
Series
  • Powerview
Warranty
  • 30 years
Measurements
  • 30×105×100 mm
Colour
  • black
Waterproof
Tripod connection
Suitable for eyeglass wearers
Eye cups
Size
  • Compact
Suitable for
  • safari
  • children

Dimensions & Weight

Weight
  • 195 gram

Optics

Lens diameter
  • 21 mm
Magnification
Eye relief
  • 10 mm
Exit pupil
  • 2,63 mm
Minimum focus distance
  • 6,4 m
Twilight factor
  • 13
Light intensity
  • 6,9
Field of view at 1000 metres
  • 126 m
Lens coating
  • Fully Multi Coated (FMC)
Glass material
  • BK-7
Dioptric adjustment

Reviews about Bushnell Powerview 8x21 Reviews

What are the experiences of other customers? Read about them here.

Average customer rating

4.8 / 5
(based on 1 review)
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P h
15/10/2017
Per part

Just the job

I've just purchased a set of bushnell powerview 8x21 and I'm really happy with them. Of cause they aren't up to the same spec as a more expensive binocular but they are just the job for putting in your pocket and taking with you when your out and about and just need a small set just in case. Really pleased with the quality, a nice clear view and they look good too.

What is your main use for these binoculars?

I take them on walks and fishing because they are small and light weight

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