Roof prism binoculars appeared simpler than porro prism binoculars.
Binoculars porro vs roof.
Roof prism binoculars have lately become more popular than porro prism binoculars.
However porro prism binoculars are great watching birds or other small objects.
The porro prism design was simpler and more light efficient and its images showed better contrast.
But inside they had a more complex light path and required much greater optical precision in manufacturing.
Of both types there are good and not so good instruments.
And they re much better for overall general use.
The difference between porro prism and roof prism binoculars is in the design and the respective features.
So if you re on a tight budget go ahead and look for a porro set sporting bak 4 prisms.
Roof prism bino sets are often much more expensive than porro designs of the same magnification.
Roof prism binoculars vs porro prism binoculars a comparison.