BINOCULAR Specifications
for Birding the best sizes are -
8x30 - small lightweight , porro prism normally-- General birding, bird tables etc
8x 32 - small lightweight , normally roof prism- General birding-
8x 40 - general use bins- porro or roof prism - good field of view - at home in woodland, rain forest etc
8x 42 - probably the birder bins of choice atm- roof prism - good field of view - at home in woodland, rain forest etc
7x 42 - bright image, huge field of view and deep depth of field, roof prism- excellent in rain forest and on dull winter days etc.
10 x32 - small and powerful but not great in rain forests, leafy woodland or at dusk. Narrow field of view.
10 x42 - Popular size , big image , normally roof prism- great for open country birding, not so good in rain forest and woodland.
10 x50. - Big and heavy - bright image,bulky but optically excellent roof prism, also available as porro.
As a guide, divide the second number by the first- the higher the figure, the better the light gathering power of the bins. Anything below 4 is probably not bright enough for birding in all conditions.
For advice about Birding, Identification,field guides, binoculars, scopes, tripods, etc - put 'Birding Tips' into the search box
Pete
Birding is for everyone no matter how good or bad we are at it,enjoy it while you can