Victory Diascope 65mm T* FL, straight viewing, 15-45x zoom

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Get a $500 rebate in the form of a prepaid American Express card direct from Zeiss when you buy this Zeiss spotting scope before 12/31/12.

This Zeiss 65mm Victory Diascope straight-through 15-45x spotting scope uses the unique Zeiss FL Concept optical system to bring you the brightest, sharpest, most realistic and natural 65mm spotting scope images on the planet.

The FL Concept objective lens uses state-of-the-art multiple thin lens technology, with a total of four lens elements in the objective lens rather than the two lenses used in other scopes. Twice the number of optical elements to work with gives the Zeiss optical designers the freedom to fine-tune the Diascope’s optical performance to a level of perfection previously unavailable from any spotting scope. Extra low dispersion fluoride (FL) Schott ED glass elements are combined with ecologically-friendly lead- and arsenic-free glass; renowned Zeiss T* (T Star) multicoatings maximize light transmission for sharp, bright images; and protective LotuTec lens coatings shed water and dirt. The result is images that are bright and contrasty, with natural color rendition, and virtually no color fringing. (Please note that fluoride ED glass elements are not the same optical composition as the more fragile calcium fluorite crystal lenses used in some scopes.)

The scope’s 65mm aperture gathers 17% more light than the typical 60mm scope. This extra light-gathering can often mean the difference between identifying a life bird and missing it entirely in the poor light conditions of dawn or twilight.

The Victory Diascope’s black armored body is good-looking and durable. The armor helps absorb shock and noise and provides a more secure grip in wet weather. The retractable lens shade improves both visual and photographic contrast and is armored for protection against bumps. A sight line molded into the lens shade armor helps you quickly align on distant targets.

The scope’s straight-through design is generally better than a 45° viewing angle model for quickly locating birds in the field. With a straight-through scope, you can sight over the barrel to center in on the bird before trying a high power eyepiece view that often has a confusingly narrow field. It is difficult to sight over a 45° viewing barrel, as the prism housing and eyepiece can block the view. The lens shade can be rotated to either side of the scope body, however, to bring its built-in sighting line to a more visible position, making this less of a problem than with other 45° scopes.

On the other hand, a 45° viewing angle is generally more comfortable than a straight-through scope for watching treetop activity or for extended observing from a blind or back porch. You won’t get a crick in your neck from crouching over to look through the scope as you often have to with a straight-through model on a too-short tripod. A 45° viewing model is also more convenient for observing couples of varying heights who must share a single scope, as there is little need to constantly raise and lower the tripod to a comfortable height for each observer. The Zeiss Z65ABZ is a 45° viewing angle version of this scope, should that style be more convenient.

The 65mm Victory Diascope is O-ring sealed and nitrogen-purged to be fogproof and waterproof. It is capable of operating over a temperature range of 2 degrees below zero to +131 degrees Fahrenheit – from the Arctic to Death Valley, from the Serengeti Plains to Costa Rica.

This 65mm Victory Diascope body is supplied with a 15-45 power zoom eyepiece. This eyepiece provides a wide 168’ field of view at 1000 yards at 15x with 15mm of eye relief. At 45x, the field is 78’ wide, with 12mm of eye relief. The eyepiece has a pull-up rubber eyecup. Once up, a slight twist clockwise locks the eyecup in its raised position. A similar twist counterclockwise lets you lower the eyecup for eyeglass use. Rubber caps for each end of the eyepiece are provided for protection when it is not in use. The eyepiece comes in a protective zippered nylon case with belt loop. The Zeiss 65mm Victory Diascope is also available with a wider power range 15-56x zoom as model #Z65BHZ. A fixed power wide angle eyepiece (30x, with a 120’ field, part #Z30N) is also available as an option for either scope.

The external optical surfaces of the eyepiece and objective lens are treated with permanent “LotuTec" coatings. These special hydrophobic (water-repelling) coatings are so smooth, even at the molecular level, that water can find virtually no grip on the optical surfaces. This causes the condensation from rain, fog, snow, or your own breath to form in much smaller droplets than on standard optical coatings. Smaller droplets scatter less light, resulting in higher light transmission and a clearer image. Oil, dirt, and grease are similarly repelled, making for simplified, streak-free cleaning.

The Zeiss Diascope has a dual-speed rotary knob focusing mechanism built into the top of the prism housing for one-finger focusing with either hand, even while wearing gloves. This Zeiss dual-speed innovation combines two focusing speeds in a single control knob. The Precision Mode provides accurate focus, while the Rapid Mode engages automatically when needed, adapting its speed to every requirement – all with a single knob. Focusing always starts in the Precision Mode, no matter at what distance you are focused, with a 270° rotation in either direction fine-tuning the current focus slowly and precisely. However, once you move the knob past the Precision zone, the focus speed automatically increases by a factor of five, to move the focus point rapidly. Stop moving the knob and focusing automatically drops back to Precision Mode, no matter where you are in the focus travel.

The Victory Diascope can be used as a 750mm f/12 telephoto lens by adding a T-ring to fit your 35mm or DSLR camera and optional camera adapter #ZPA. This straight-through Victory Diascope is generally more usable for photography than an angled-viewing scope, as it handles more instinctively like a camera/telephoto lens combination. The barrel of the scope can be rotated from side to side to give a vertical or horizontal picture composition during photography. Click stops are built into the rotation mechanism at 45° intervals, although the scope rotation can be set at any angle you choose and locked into place with a knob at the side of the scope body.

A review in Birding, the magazine of the American Birding Association, said the view through the 65mm Zeiss had “a particular vividness; colors jump right out at you with a lot of snap and pop . . . should perform well in anything short of total darkness . . . the vivid view through the Zeiss would be easy to live with.” This 65mm Zeiss Victory Diascope zoom is a scope that will give you a lifetime of premium optical performance.

Magnification:
Magnification is the ability of a telescope to make a small, distant object large enough to examine in detail. If you look at the Moon (250,000 miles away) with a 125 power (125x) telescope, it's essentially the same as looking at it with your bare eyes from 2000 miles away (250,000 ÷ 125 = 2000). The same telescope used terrestrially will make an object one mile away appear to be only 42 feet away (5280 feet ÷ 125 = 42).
The magnification of a telescope is determined by dividing the focal length of the telescope (usually in millimeters) by the focal length of the eyepiece used (again, usually in millimeters; but in all cases by the same unit of measurement used for the telescope focal length). For example, a 2000mm focal length telescope and a 10mm focal length eyepiece will give you a magnification of 200 power (2000 ÷ 10 = 200). The same 2000mm telescope with a 20mm eyepiece will give you 100x (2000 ÷ 20 = 100).
15-45x
Field of view 1000 yards:
168' @ 15x
Near Focus:
13.1'
Eye Relief:
Eye relief is the distance from the last surface of the eye lens of an eyepiece to the plane behind the eyepiece where all the light rays of the exit pupil come to a focus and the circular image is formed, sometimes called the “Ramsden Disk.” This is where your eye should be positioned to see the full field of view of the eyepiece. If you must wear glasses because of astigmatism, you’ll usually need at least 15mm of eye relief or longer if you want to see the full field of view with your glasses on.

A note on our eye relief figures: Quite often, our eye relief figures will differ from those of the manufacturer. This is because we measure the “usable” eye relief, while the manufacturers specify their usually-longer (but technically correct) “designed” eye relief.

The eye lens of the eyepiece is normally recessed below the rubber eyeguard or rubber rim of the eyepiece to keep the lens from being scratched during use. An eyepiece might have a “designed” eye relief of 15mm (and the eye relief will truly measure 15mm from the eye lens to where the image forms). However, if the eye lens is recessed 3mm below the eye guard, the Ramsden Disk forms only 12mm above the eyepiece body (the 15mm “designed” eye relief, less the 3mm of eye relief made unusable by having the eye lens recessed into the body of the eyepiece). This “usable” eye relief of 12mm (measured from the rolled-down eyeguard – the closest point you can get your eye to the eye lens – to where the image forms) is the eye relief figure we would measure and list in this website.

Why is it important to list the “usable” eye relief? For those people who don’t wear eyeglasses while observing, a few mm difference between the eye relief they expect from the manufacturer’s literature and the shorter eye relief they actually get in real life doesn’t mean a lot. They can simply move a little closer to the eyepiece to see the full field, and never realize that the eye relief is a little shorter than they expected. However, some people must wear eyeglasses while observing, because of severe astigmatism. These observers can’t move closer to the eyepiece if the eye relief is shorter than expected because their glasses get in the way. For these people, the real life “usable” eye relief is more important than the technically correct but sometimes not fully usable “designed” eye relief. We measure and list the actual usable eye relief so that people in the real world can pick the eyepieces that will work best for them.

15mm @ 15x
Exit Pupil:
The circular image or beam of light formed by the eyepiece of a telescope. To take full advantage of a scope's light-gathering capacity, the diameter of an eyepiece exit pupil should be no larger than the 7mm diameter of your eye's dark-adapted pupil, so that all of the light collected by the telescope enters your eye. (The eyepiece exit pupil diameter is found by dividing the eyepiece focal length by the telescope focal ratio.) Your eye's ability to dilate declines with increasing age (to a dark-adapted pupil of about 5mm by age 50 or so). For those in this age group, eyepieces with exit pupils larger than their eyes can dilate to simply waste their telescope's light-gathering capacity, as some of the scope's light will fall on their iris instead of entering their eye.
4.33mm @ 15x
Twilight Factor:
A number used to compare the effectiveness of binoculars or spotting scopes used in low light. The twilight factor is found by multiplying the size of the objective lens (in mm) by the magnification and then finding the square root of that result. The larger the twilight factor, the more detail you can see in low light. A twilight factor of 17 or better if usually required for reasonable low light use.
31.22 @ 15x
Aperture:
This is the diameter of the light-gathering main mirror or objective lens of a telescope. In general, the larger the aperture, the better the resolution and the fainter the objects you can see.
2.56"
Length:
14.7"
Armored:
A binocular or spotting scope whose body is clad in rubber or polyurethane armor is said to be armored. Armor can be applied for looks, a better grip, noise-proofing, etc. An armored body does not guarantee that a binocular or spotting scope is waterproof, although most waterproof optics are armored.
Yes
Waterproof:
Yes
Photographic Focal Length:
The effective focal length of a spotting scope/camera adapter combination when the scope is used as a telephoto lens. The photographic focal length divided by 50 will give you the magnification of the combination compared to your standard camera lens.
750mm
Photographic Focal Ratio:
The photographic “speed” of a spotting scope/camera adapter combination when used for photography. The smaller the “f/ratio,” the faster the exposure (to capture birds in motion), or the dimmer the light level in which you can successfully shoot.
f/12
Weight:
The weight of this product.
3 lbs. 2 oz.
Warranty:
Limited Lifetime
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Zeiss - Victory Diascope 65mm T* FL, straight viewing black body, 15-45x zoom

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Zeiss - Victory Diascope 65mm T* FL, straight viewing black body, 15-45x zoom
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The Zeiss Victory Diascope 65mm straight-through 15-45x zoom spotting scope uses a multiple thin lens objective with Schott fluoride glass for the brightest, sharpest, and most vivid 65mm spotting scope images on the planet . . .





. . . our 34th year