Why can't Nikon or Swarovski or Zeiss make an alpha binocular with a 600 foot FOV and totally sharp edges? The old Nikon porros had a huge FOV but the edges were usually lacking in sharpness. They have telescope eyepieces like the Nagler now with a huge FOV and they keep getting larger so why not binoculars. What optical principal limits the FOV. I want a Nikon EDG like view with a 600 foot FOV!
My limited understanding from what I have read would lead me to believe that prism size is the culprit. I am sure you have seen many of the lclassic porros that do offer huge fields of view. Almost all of them have huge prism housings to, well, house the large prisms. The larger prisms are needed to avoid any type of incursion into the light path.
How far off am I on this one Henry?
Since roof prism models have narrower bodies it would be difficult to create one with an extra wide field of view that did not have extremely fat barrels to accomodate the larger prisms needed.
[QUOTE=FrankD;2357612]My limited understanding from what I have read would lead me to believe that prism size is the culprit. I am sure you have seen many of the lclassic porros that do offer huge fields of view. Almost all of them have huge prism housings to, well, house the large prisms. The larger prisms are needed to avoid any type of incursion into the light path.
How far off am I on this one Henry?
Since roof prism models have narrower bodies it would be difficult to create one with an extra wide field of view that did not have extremely fat barrels to accomodate the larger prisms needed.[/QUOTE]
So if you didn't need a prism like in a telescope eyepiece you can have huge FOV like the Naglers?