Canon Binoculars – technical specifications explained

Canon is one of the worlds top optics companies and their binocular range is one of the best you can find. The company was started in the 1930`s in Japan and began making high quality cameras to compete with the German imports. Camnon produced its first camera in 1935 and subsequently developed their expertise into other optical devices.
After the second world war along with the Japanese economic miracle Canon expanded its activities into the US and Europe.

Along with cameras and other optical goods they expanded into electronics and business machines. Today this multinational company holds a prime position in both optical and business technology

Canon offers some of the best value for money binoculars available but before choosing to buy binoculars a number of factors should be considered.

What do you want to use the binoculars for? The best binoculars for astronomical use are not necessarily the best ones to take to a football game, nor the best buy for watching small birds.

You need to understand first of all the binocular numbers
Binoculars are advertised with such numbers as 10X30 or 15X50.
The first number tells you the magnification so a 10X30 binocular will magnify what you are looking at by a factor of 10, the 15X50 will magnify by a factor of 15.
The second number tells you the diameter of the objective lens in mm; the objective lens is the opposite end to the eyepiece and will determine how much light will enter the binoculars an important factor for astronomical viewing for example. A large lens will also imply a larger and heavier pair of binoculars, extra weight you may not want if you are climbing up a mountain for example.

It is also important to know the shortest focussing distance, or in other words, how far you must be from an object in order to bring it into focus. This is an important consideration when observing nature, if you want to observe samall animals and insects in great detail it is good to have a pair of binoculars which will focus on an object a relatively short distance away. This is obviously not a factor to consider if you are looking at the stars.

The optical quality is also obviously very important, high quality lenses will produce little chromatic distortion and will give a clear focussed image in the whole field of view, not just in the centre. The better the optical quality the more you are likely to have to pay.

The weight and size of the binoculars will also determine how comfortable they are to use and it is necessary often to trade off optical quality for less size and weight.

The relationship between the magnification and the size of the lenses will also determine the field of view. A wider field of view can often be vital if you are searching for wildlife, if your view is too restricted this will mean that you too often miss what you are looking for.
Field of view is measured in two ways: either as the actual field of view which is a measurement of the angular amount of sky you can see when you look through…

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