Celestron 7X50mm UpClose porro prism

This Celestron 7 x 50mm UpClose is an exceptionally affordable low light binocular with good-sized high-resolution 50mm objective lenses that let you see small and dim details in low light situations that other binoculars simply miss. The 7x50mm UpClose has a good 6.8° field of view (357' at 1000 yards) and very fast focusing that lets you keep fast-moving action sharply in focus. It is rubber armored for a comfortable grip and is weather-resistant to shrug off the occasional summer shower (although it is not waterproof). Its 50mm diameter fully coated optics gather substantial amounts of light, giving it a very high twilight factor of 18.71, well above the twilight factor of 17 recommended for use in the low light of twilight or under overcast skies. The close focus is 16', making it somewhat marginal for use in close-in woodland observing, although its extremely bright images do give it a definite advantage is shadowed forests and woods. Overall, this is a surprisingly affordable wide field/low light binocular for those who want really bright images without spending a fortune.

Features of this binocular . . .

Porro prism optics. Traditional porro prism design using BK7 prisms. Center focus.

Fully coated optics. The optics are treated on all air-to-glass surfaces with antireflection coatings for good light transmission.

Weather resistant. O-ring sealed to resist showers and inclement weather, although not designed to be fully waterproof and fogproof.

Armor. Black rubber armor absorbs noise and shock and provides a good grip when wet. Molded-in grooves for a secure and comfortable grip.

Roll-up eyecups. The rubber-rimmed eyecups roll down for eyeglass or sunglass use. Eye relief is specified at 13mm, so there will be some vignetting for those who must wear eyeglasses while observing.

Wide field. The field of view is 6.8° (355' at 1000 yards), quite good for a binocular in this power and aperture range.

Close focusing. Focuses to 16', which will somewhat limit your close-in woodland birding capabilities. However, its bright images and very good depth of field make it a good general purpose low light binocular when extreme close-ups are not required.

Very fast focusing. Less than a half turn of the large ribbed focus knob moves from the 16' close focus out to the horizon so you can keep track of fast-moving action.

Rotary diopter correction. A variable diopter ring on the right eyepiece allows you to match the binocular optics precisely to your individual eyesight for a sharp image.

Tripod adaptable. For extended no-hands observing, a protective cover on the center hinge unscrews, revealing a 1/4"-7 thread hole for mounting the binocular on an optional photo tripod using an optional tripod adapter. While the 7x50mm UpClose is light enough at 33 ounces to hand-hold, for example at sporting events, the use of a tripod will make for sharper shake-free images during extended observing periods.

Standard accessories. A neckstrap, eyepiece and lens covers, and a soft nylon carrying case with shoulder strap are standard equipment.