Deer Hunting Forums - View Single Post - Binoculars
Thread: Binoculars
View Single Post
  #8 (permalink)  
Old 09-04-2007, 10:12 PM
watchmaker watchmaker is offline
B&C 100 Class
 
Join Date: Jul 2007
Posts: 59
Default

HOW TO GLASS

Well, what now, you just put he binoculars to your eyes and look through them, right?

Just in case we have new binocular users here, I am going to explain the mechanics of glassing the right way. Not long ago a new hunter in the family was showing me his new binoculars that I noticed were adjusted in the interpupilary distance with a far greater length that I knew his eyes to be set.

When I questioned him if he was not seeing two uncompleted circles when looking through the glasses, he admitted it and was surprised when I told him that the binoculars are supposed to deliver only one circle. I guess he has seen too many movies where the view trough binoculars are shown that way.

So our first business with the binoc is to adjust the interpupilary distance by bending the barrels at the center hinge until our eyes see only one circle; that will ensure that the optical center of the glasses is in line with the center of our pupils.

Second is to adjust the diopter wheel that is usually in the right barrel; as not everybody has 20/20 vision, this wheel will adjust the focus for your right eye. To accomplish the adjustment cover the right objective with your hand or objective cap, look through the glasses and adjust the center wheel until the view is sharp and clear, now cover the left objective and adjust the diopter wheel until the view is sharp.
I used for years to do this in the reverse sequence, adjusting the diopter first and then the center wheel, you get the same results.

Look at the markings at the edge of the wheel to remember the settings in case somebody changes them, (I just put a small drop of white out correction fluid to mark the setting).
The eye relief is fixed and in modern binoculars quite generous, but the eye cups collapse to use the binoculars with your eye glasses, some models can be adjusted to stop midway or at increments so you can get your oculars lenses as far or as close as you want to your eye glasses.

Now you are ready to glass, if yours glasses are 10x they are marginal in how steady you can hold them, people varies but 10x is the magnification that can do with some serious help in holding the glasses.
Sit down and brace your elbows against your knees or sunk them into your stomach looking for the best stable position, grasp you binos with both hands but leave your index fingers free and anchor them against your temples, or alternatively grasp the edge of your capís bill to add another anchor point. What you are looking for is to minimize or cancel any tremors, as a jumping up and down picture magnified 10x will not let you appreciate the detail that you bought the glasses for.
With the 8x you have a little more freedom from those tremors, I have a very steady hand (I am a watchmaker) and can hold 8x glasses with one hand for relatively quick looks, but it is not recommended, after all glasses are not for quick looks.

Donít scan with glasses, your vision should be concentrated in the center of your view, and the glasses when moving, should be moving in very small increments when you are sure that the picture that you are seeing is completely understood by your brain.
The part of the eye that does the stationary looking and captures detail is very small; it is called the macula and covers only two degrees of your vision. When looking through 8x glasses this angle decrease to ľ of a degree, so if you want to capture the detail that you pay so much money for, keep your glasses steady and look through the center of them.

The crouch and the belly down position are also glassing positions that should be not overlooked, take a tip from African hunters and steady your glasses in the standing position with the aid of a mono pod or shooting sticks or even a walking stick.
In carrying your glasses you can do as the African white hunters do and use a long strap to place them out of the way in the left side of your body at waist level and under your arm, or hang them from your neck but with a very short strap, so they ride high on your chest and will not swing and strike another object when you bend down.

There are in the market some harnesses that will keep your binoculars close to your body when you move around, but they usually interfere with other equipment, at least in my case as I wear a back pack most of the time but for those that carry only the glasses those harnesses work well.

All the best
Watchmaker
__________________
builder of the Borealis flashlight
Reply With Quote