Swaro SLC... infinity setting?

[Julius K]

Hey Guys,

Just bought a pair of SLC 10x42s. I love them. Haven’t taken them in the field but have been using them to watch birds in the back yard and have been blown away by them at low light.

In the manual it mentions when the nose of the focus wheel is up it is in “infinity” setting. Can someone explain what this means?

Thanks

 

[MThuntr]

It's the focal adjustment that they are trying to normalize to a distance. This is a very coarse partially wrong answer but many optics have this setting where focus and/or parallax is measured in yards and often beyond a set distance they just call it infinity because your eyes can't really tell the difference and adjustments are so minute. For example lots of scopes may say 20, 50, 100, 200....500....infinity and binoculars have a similar setting but often don't have hash marks or yardages labeled.

 

[mxgust]

Yea optical “infinity” is the point at which light rays exit the binocular parallel to one another. This allows your eye to see without any additional focusing required. The further out the better but mathematically you get pretty close after about 20 feet. At that point it doesn’t make much difference at least as far as your eye is concerned

 

[Julius K]

Thanks guys!

 

[Steve C]

Infinity just means the binocular is focused as far away from your eye as possible. Most users are at infinity when focused on most any handy distant...say a mile away object. Or focused on a star or planet. For most people there is usually some over travel past infinity, this is useful for certain conditions that require eye glasses.