Optical
Binoculars can be a great way to increase your enjoyment in many sports and hobbies including outdoor activities such as hunting, bird watching, boating, hiking, astronomy, racing and much more.
What do the Numbers mean?
The first number is the Power of Magnification or the degree of enlargement while viewing. It is the eyepiece you are looking through. The second number is the Objective Lens and is measured in millimeters. It is the larger lens at the far end of the binocular. This is where the available light enters the binocular. The larger the objective lens the greater amount of light can enter the binocular. Example: 10 x 50 means the number 10 has 10x magnification (object appears 10x closer to you than it really is) and the number 50 means it has a 50mm objective diameter and allows about 43% more light into the binocular than a 35mm lens does.
What do the View's mean?
- Field of View: Described as a number of feet at 1,000 yards. Example: 341 ft. at 1000 yards means you are able to see a wall that's 341 ft. wide and 1,000 yards away.
- Angle of View: Often stated in degrees. One degree equals 52.4 feet at 1,000 yards. Example: If the binocular states a field of view of 5.7 degrees multiply this by 52.4 and you get a field of view of 298.6 ft at 1,000 yards.
What does Diopter mean?
Most everyone has one eye that is stronger than the other. A diopter adjustment allows you to compensate for this.
Is having a Lens Coating important?
Yes. Since binoculars transmit light from the area you are observing to your eyes and since glass absorbs and reflects light the loss of light affects the brightness. A coating on the lens helps to reduce this light absorbtion and reflection.
What do the Numbers mean?
The first number is the Power of Magnification or the degree of enlargement while viewing. It is the eyepiece you are looking through. The second number is the Objective Lens and is measured in millimeters. It is the larger lens at the far end of the binocular. This is where the available light enters the binocular. The larger the objective lens the greater amount of light can enter the binocular. Example: 10 x 50 means the number 10 has 10x magnification (object appears 10x closer to you than it really is) and the number 50 means it has a 50mm objective diameter and allows about 43% more light into the binocular than a 35mm lens does.
What do the View's mean?
- Field of View: Described as a number of feet at 1,000 yards. Example: 341 ft. at 1000 yards means you are able to see a wall that's 341 ft. wide and 1,000 yards away.
- Angle of View: Often stated in degrees. One degree equals 52.4 feet at 1,000 yards. Example: If the binocular states a field of view of 5.7 degrees multiply this by 52.4 and you get a field of view of 298.6 ft at 1,000 yards.
What does Diopter mean?
Most everyone has one eye that is stronger than the other. A diopter adjustment allows you to compensate for this.
Is having a Lens Coating important?
Yes. Since binoculars transmit light from the area you are observing to your eyes and since glass absorbs and reflects light the loss of light affects the brightness. A coating on the lens helps to reduce this light absorbtion and reflection.