What is "long eye relief" and why is it important?
Date: Wednesday 27 April, 2005
FAQ Summary:
FAQ Content:
Eye relief is the distance from the surface of the eye piece lens where you can see the full field of view of the image you are looking at. Most binoculars have a standard eye relief distance of from 9mm to 12mm. This is long enough for just about everybody unless you wear eye glasses and you don't feel like taking your glasses off to see through the binocular!
Long eye relief is primarily a characteristic which specifically benefits people who wear eye glasses. But it is also great for everyone else because it is great to use them when wearing sun glasses or eye glasses! Some binoculars with long eye relief do not have a "wide angle" field of view. This is because when designing optical systems it is difficult to provide both long eye relief and wide angle in the same system. But several of our Alpen Pro binoculars offer both long eye relief and wide angle field of view.
