FIVE WAYS HI-FIDELITY LTD

ZEISS BINOCULARS


Zeiss is a top class optical manufacturer. Zeiss roots lie in the 19th. century and the name is synonimous with the very best optical engineering. Today the company makes a large and comprehensive range of binoculars all of which are available from us.

The two models shown have been selected by us as generally the most useful. They are small, light and pocketable and will always show more than a larger binocular which has been left at home. They are very water resistant and so are well protected against the elements. As well as outdoor use they are good for theatre, auctions and other indoor activities. They will focus on objects only a few feet away and so are useful for close up nature study, They have extended eye relief and so may be used with spectacles including sun glasses. For this the eyecups may be retracted. The focusing control is offset, not just to help with folding the binocular, but also to make it easier to operate. There is an over-riding adjustment for the right eye only to allow for any difference between the eyes.

As to efficiency, this is very good. Both binoculars have exit pupils 2.5mm in diameter (this is front lens diameter divided by magnification). In daylight the eye pupil can easily contract to this diameter or even less. Under these conditions larger binoculars are incredibly inefficient and wasteful. As an example, an 8 x 40 binocular has exit pupils 5mm. in diameter. If the eye pupil is 2.5mm. this binocular is effectively stopped down to an 8 x 20 i.e. the same as the compact which is 8 x 20 in the first place. No less than 3/4 of the light collected is wasted (2.5 squared is only a quarter of 5 squared). It is true that these small binoculars will not perform as well as large binoculars of the same quality in poor light conditions. Nevertheless they are still far from useless. As well as being simply larger, the large binoculars of similar quality are much more expensive. We think this means a really good reason is needed to justify buying anything other than the two models we stock.

As to magnification, it is pointless to choose x10 unless the binocular is to be steadied. This may be as simple as elbow resting. For free hand use the x8 is a better choice.

The manufacturer's site is: www.zeiss.de/sportoptics

8 x 20 Victory Compact

Shown with the eyecups extended.

Magnification: x 8
Front lens: 20mm.
Exit pupil: 2.5mm.
Close focus: 2.6m.
Height: 93mm.
Weight: 225gm.

Case included.

£505

 

10 x 25 Victory Compact

Shown with the eyecups retracted. The image is not to the same scale as the 8 x 20. The actual binocular is only slightly larger than the 8 x 20.

Magnification: x 10
Front lens: 25mm.
Exit pupil: 2.5mm.
Close focus: 4m.
Height: 110mm.
Weight: 250gm.

Case included.

£535


COMMENT
First class products. Not expensive for the quality.
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