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| The extra 1mm aperture of the Pentax 8 x 43mm DCF SP may not sound like much when compared to a standard 42mm aperture, but that extra millimeter adds almost 5% more light gathering capacity. It’s an extra margin of brightness that can significantly extend your twilight birding time. An excellent near focus of 6.6’ makes the 8 x 43mm SP excellent for close-in birding in shadowed wooded areas. In these kinds of low light conditions, the 5% added brightness of its extra aperture can often make the difference between making a difficult identification and missing the bird entirely. Like all the Pentax SP series, this totally waterproof and fogproof binocular uses the latest type of sophisticated aspheric lens elements for excellent resolution, a flat field, and low astigmatism. Features of this binocular . . . H-body roof prism with internal center focus. Lightweight magnesium-alloy body with noise- and shock-absorbing dark green and black rubber armoring. Fully multicoated optics for maximum light transmission. External lens surfaces have an additional scratch-resistant hard coating for added protection from scratches, dings, rough handling, etc. A hydrophobic (water-shedding) coating on the lenses helps keep water from forming large beads on the lenses during foggy or rainy observing, improving the image sharpness and contrast. Hybrid aspherical lens elements in its three-lens/two-group eyepiece design provide good edge-to-edge sharpness. A four-lens/three-group optical system in the objective lenses provides a sharp image. One and a half turns of the large ribbed focus knob moves from an excellent close focus of 6.5’ out to the horizon. Nitrogen-filled and O-ring sealed to be fogproof in all temperature extremes and waterproof to a depth of 1 meter. The inert nitrogen filling also prevents the internal formation of fungus in high humidity climates, such as rain forests. Phase-correcting prism coatings provide high contrast and resolution. This is particularly visible when looking sunwards, where more color and detail is visible in the shadowed areas of backlit or silhouetted birds. Twist-up rubber-rimmed eyecups retract into the binocular body for eyeglass use. The eyecups have four built-in click stops to more precisely match the eye relief to your eyesight. Objective lens covers are provided to protect the optics. The covers are tethered to the binocular body so they can’t be lost in the field, but can be removed if desired. A socket is built into the center hinge to let you connect an optional photo tripod adapter for extended no-strain tripod-mounted observing sessions. The continuously variable diopter ring on the right eyepiece allows you to match the binocular’s performance to that of your eyes. It can be locked in place so it can’t be accidentally knocked out of adjustment during use. A comfortably-large ribbed focus knob makes it easy to focus while wearing mittens or gloves.
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| | Soft case, eyepiece rainguard, objective lens covers, neck strap. |
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Terms of Sale | PRIVACY POLICY 7/1/2004 | Fine Print
Toll-Free Telephone Astronomics: 800-422-7876; Christophers, Ltd.: 800-356-6603
Alternate Telephone: 405-364-0858 24 Hour Fax Line: 405-447-3337
Telephone Hours: Monday 8 AM - 6 PM CST
Tuesday-Friday 8 AM - 8 PM CST
Saturday Noon - 5 PM CST
Store Hours: Monday-Friday 9 AM - 5 PM CST
Saturday Noon - 5 PM CST
Astronomics / Christophers, Ltd.
680 S.W. 24th Ave.
Norman, OK, 73069
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