"The Natural Philosopher" wrote in message
...
John wrote:
"Andy Champ" wrote in message
. uk...
On 28/09/2010 10:09, John wrote:

By narrow view angle - do you mean they give a telescopic image? surely
the
greater the magnification the narrower the angle.


Good binoculars will give a wider field of view than cheap ones at the
same magnification.

Andy


Doesn't magnification equate to a narrower area of view?

My background is in photography and the greater the telephoto power means
a narrower angle of view. Isn't it the same? (a 35mm camera standard 50mm
lens had a field of view of about 90degrees)
that is with a fixed negative size. Now google vignetting


I am familiar with it. So what Andy Champ meant was a "clearer view across
the whole of the narrow field of view"