25×100 ED Ultra – Short Eye Relief



25×100 ED Ultra – Short Eye Relief


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).

When we introduced it several months ago, it had the shortest eye relief of any Oberwerk binocular- just 10mm of actual usable eye relief. This makes it difficult to see the entire field of view for people that must wear glasses while observing- but it’s no problem for those that don’t wear glasses, or those that wear contacts. We’ve since redesigned the eyepieces, they now have 14mm of usable eye relief– so now everyone can use this model. We still have several brand-new-in-the-box earlier 10mm ER versions in stock, so we’re blowing them out for a great savings!

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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