25×100 ED Ultra


25×100 ED Ultra


In stock.

The new Oberwerk 25x100mm ED Ultra is the largest and highest-image-quality binocular we offer, short of the XL Series binocular telescopes. Like the XL Series, it has FK-61 ED (Extra-low Dispersion) glass objectives, which greatly-minimize chromatic aberration. In fact the view it provides is exactly the same as what you’d see with a BT-100XL-ED with the optional 22mm (25x) eyepieces ($2800). With the Ultra, you can’t change magnification, and it doesn’t have the 45-degree view- but it’s roughly a third of the cost! Of course it has all the features of the other Ultra models, including precise individual focus, robust floating-plate prism mounts, fully broadband multi-coated optics (all air-to-glass surfaces, including prisms), rubber-armored all-metal waterproof construction (nitrogen filled), braced and hinged objective tubes, and built-in mount. This binocular has a wide 2.63° FOV (66° AFOV), with excellent sharpness across the entire field. Includes objective covers, ocular caps, and our exclusive Heavy-Duty aluminum-frame case!
Note-shown on TR3 Tripod for the XL Series (not included).

Recommended mount-
Oberwerk 5000 tripod/head
Oberwerk TR3 hardwood tripod with carbon-fiber elevator and Oberwerk 5000 head.

Additional information

Weight 25 lbs
Dimensions 26 × 15 × 12 in


Eye Relief

14mm (usable)

Exit Pupil


IPD Range


Minimum Focus


Product Weight

10 lbs.

Product Dimensions

L=18", W=10", H=4"


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