I was googling the FOV calculation for binoculars, and one site mentioned that it takes into account the combined view from both oculars. Now I can only see through one eye so I would therefore only be able to utilize half of the stated FOV.
What you've read is a
lie that only an
incompetent can write on the net.
Each eyepiece of binoculars will have the same field of view, so even a monocle will have the same field of view.
You will see exactly the same amplitude that anyone with binoculars from the same field of view sees. The fact of using only one eye does not discriminate against the visual field, but only a lesser three-dimensional sensation. Only the part generated by the parallax (two different perspectives). But you don't lose much.
The field of view of the eyepiece also determines the apparent width of the observation window (which is the one that most interests us all). The greater the window, the greater the sensation of being inside the observed scene.
The declared field of view value for binoculars and spotting scopes must be assessed on the basis of magnifications. Thus, for 10x values, a field greater than 100m and greater than 125m for 8x will be preferable.
You will hardly find 10x monoculars with 120m or 8x with 150m at low cost, but at most 10x with 112m and 8x with 140m approximately.
Sometimes a higher quality monocle with a narrower field is better than a wide but low quality field. If you have no price problems, you will have more chances.
If you don't understand anything or have doubts, always ask.
