Pentax

<p>These compact, waterproof porro-prism binoculars offer 8x magnification at a most reasonable price.</p><ul><li>Small 25mm objective lenses keep them lightweight, though compared to larger binoculars, they offer less brightness</li><li>Field of view is 108m at 1000m</li><li>Exit pupil of 3.1mm</li><li>15mm eye relief reduces strain and works well for most eyeglass wearers</li><li>Dimensions are 11 x 11.6cm</li></ul>

Pentax 8X25 UCF Binoculars

This tells you how many times an object is magnified when observed through the binoculars.

The diameter of the objective lens will impact how bright, sharp, and comfortable your view is. Generally, bigger is better.

Lens coatings reduce light loss and glare to increase contrast and diminish eyestrain. Coated: one layer on external surfaces only. Fully coated: every surface is coated. Multi-coated: multiple layers on some of the surfaces. Fully multi-coated: multiple layers on every optical surface.

The widest dimension of circular viewing area that you can see.

The nearest distance at which the binoculars will focus on an object.

A measure of image brightness. The greater the realtive brightness number the better the binoculars will perform in dim light.

The diameter of the objective (outside) lens divided by the binocular's magnification. It indicates the amount of light that reaches your eye (most noticeable in low light conditions). Higher numbers offer brighter images.

The distance between the eyepiece and your eye while still allowing entire field of view. Long eye relief is good for eyeglass wearers.

Waterproof binoculars are assembled with O-rings and are purged with nitrogen to avoid condensation. They are ideal for boating or use in rainy weather.

These binoculars can be adjusted for variances between right and left eye vision.

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Pentax 8X25 UCF Binoculars

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