
A Work Commenced May 30 2026
Product: Oberwerk Sport APO 10 x 32
Country of Origin: China
Chassis: Magnesium alloy overlaid by protective rubber
Exit Pupil: 3.2mm
Eyecups: Twist up
Eye Relief: 17mm
Field Flatteners: Yes
IPD Range: 56-74mm
ED Glass: Yes, FCD 100 SD APO designation
Coatings:FBMC, dielectric phase coatings,hydrophobic coatings on outer lenses
Field of View: 136m@1000m(7.8 angular degrees)
Dioptre Compensation: +\-4
Close Focus: 1.65m measured
Waterproof: Yes IPX7
Nitrogen Purged: Yes
Tripod Mountable: Yes
Weight: 604g
Accessories: Padded case, neck strap, rain guard and objective covers, test certificate
Warranty: 5 Year Limited
Price(UK): £699.95
Imagine having an optically excellent, lightweight 10 x 32 delivering a wider field of view than either the Zeiss Victory SF or Swarovski NL Pure 10 x 32, but with a price tag of just one third of their retail prices. Just a few short years ago, you would have called me daft for making such a claim, but times and tide have moved on. Oberwerk have just brought to market a new and exciting Sport APO series of roof prism binoculars delivering top-tier performance rivalling the best optics from Europe.
Oberwerk, of course, is no stranger to the binocular market, having established itself as the world’s leading supplier of large astronomical binoculars. But in recent years, its founder, Kevin Busarow, has been developing smaller, handheld binoculars catering more for birders and other outdoor enthusiasts. Encouraged by the success of their highly popular Sport ED 8x and 10x 42mm models, Oberwerk has now gone one step further in offering a new line of instruments sporting ultra-flat, wide angle views and incorporating super-low dispersion objective lens elements that promise to deliver world class performance. In this review I will be test driving the Oberwerk Sport APO 10 x 32.
Ergonomics

When I first handled the Oberwerk Sports APO chassis, I was surprised how plain and understated it looked with its grey chassis and black eyecups. Unlike all the other super wide angled binoculars I’ve previously tested, which were quite heavy, the Oberwerk Sport APO bucks that trend, tipping the scales at just 604g!

Another distinguishing feature of these Sport APO models is the location of the dioptre compensation ring, which is located just in front of the focus wheel. Some folk will find this weird but the Swarovski NL Pure adopts a similar dioptre design. I’m in two minds about this: on the one hand, it’s easier to accidentally move it, but on the other, it’s quick and easy to rectify in the field.

The twist up eyecups offer five separate positions and hold their place firmly. The large eye lens makes finding your ideal inter pupillary distance easy. Eye relief is generous: with the eyecups fully retracted I could access almost the entire field with my non-progressive spectacles.
The Oberwerk logo appears on the side of the barrels:

The focus wheel has deep groves affording excellent grip and is superbly tuned, rotating smoothly with no free play. Two complete rotations anticlockwise brings you from closest focus to infinity and a bit beyond.
The under side of the barrels have two shallow thumb indents. While some folk like them, I never found them especially useful.

The supplied rain guard fits the eyepieces snugly and I very much liked the design of the objective covers which slot into two little grooves at the end of the barrels. They can be detached easily if you don’t like using them in field use.

The Oberwerk Sport APO 10 x 32 is a pleasure to handle. I can easily wrap my fingers round the barrels to get a good steady view. You do have to be a little bit careful when focusing however, as the dioptre ring lies just beyond the focus wheel. In practice however, you very quickly get used to it.
Optics
As usual, I began my tests by examining the image of a bright light source from across my living room. The results were excellent, with no significant internal reflections and only a very subdued diffraction spike. Examining the entrance pupils also yielded excellent results. You can see the perfectly circular pupils surrounded by a dark hinterland. This indicates that the 10 x 32 should handle well against the light.


While the Oberwerk Sport APO chassis comes across as rather plain and unostentatious, there’s nothing plain about its optical performance. The view is wonderful! Tack sharp from centre to edge, colours are saturated and true to life, and that enormous field of view creates a totally immersive visual experience. Though I don’t wear glasses while looking through binoculars, I found the optimal setting for the eye cups to be two clicks up and not fully extended. Chromatic aberration is vanishingly low across most of the field, with only a trace seen at the very edges near the field stops. Contrast is a noticeable step up from the vjews presented by the Sport ED models I’ve reviewed in the past. This I attribute to the higher grade FCD 100 super low dispersion glass making up the objective lens assembly. That’s equivalent to Ohara FPL 53.

As a control, I compared the views through the Oberwerk Sport APO 10 x 32 with my Leica Ultravid HD Plus 8 x 32 under a number of lighting conditions, from bright sunny days to heavily overcast skies, taking into account the magnification difference between the glasses. I can report that the Oberwerk Sport compared very favourably to the much more expensive Leica glass. Indeed the field of view is larger in the 10 x 32 compared with the 8 x Leica(7.8 vs 7.7 degrees, respectively), which really impressed me! I couldn’t make out any differences in sharpness between the two instruments but the Leica glass showed more distortion and higher levels of colour fringing at the edge of the field, and with much more pronounced pin cushion distortion to boot!

Close focus was noticeably better in the Oberwerk Sport APO too – 1.65m compared with about 2m in the Leica. The only optical parameter where the Leica excelled was glassing against the light when, the Oberwerk 10 x 32 showed stronger veiling glare. That said, here too the Sport APO handled better than the Sport ED models.
To ascertain how flat the field is in the Oberwerk Sport APO, I examined the morphology of bright summer stars like Vega, now high in the eastern sky after local midnight. The star remained pin sharp all the way to perhaps the last 10 per cent of the field, when I began to perceive a trace of coma and astigmatism which couldn’t be focused out. Turning to a gibbous Moon, I also tested the Sport APO for illumination drop off at the edge of the field, where I was very surprised to see very little fall off. Here again, the Sport APO was noticeably superior to the less advanced Sport ED models.
Conclusions

Oberwerk have claimed that their new Sport APO series brings a new level of affordable excellence to the market. I would wholeheartedly agree. Not only are you getting lightweight, world class performance from their new APO series of handheld binoculars at hitherto unheard of prices, you also can be reassured that their product is tested in house before it’s shipped out to you. That reassurance alone is inestimable!
Highly Recommended!
Dr Neil English is author of Choosing and Using Binoculars: a Guide for Stargazers, Birders and Outdoor Enthusiasts





























































































