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Delta Optical Extreme 10×50 ED

256,10 EUR
315,00 EUR incl. VAT

SKU: DO-1601 Categories: , Tag:


The models from the Delta Optical Extreme ED series are massive binoculars with uncompromising solutions. When constructing them, the priority was the best optical properties supported by solid mechanics. That is why a porro prism construction was used and low-dispersion elements were used, as well as massive prisms made of high-quality BaK4 glass.

Thanks to ED glass lenses with very low dispersion, the chromatic aberration in the image has been significantly reduced, and thanks to the powerful prisms you do not have to worry about vignetting, i.e. image darkening on the edge of the field of view. In addition, all the lenses of the Extreme ED models are covered with multi-layer antireflection FMC coatings. They guarantee over 90% light transmission in the entire system, and thus a bright and extremely realistic image with natural colors. The image is free from imaging defects such as astigmatism or coma, and thanks to the correct distortion correction, it is also perfectly flat.

All these features add up to the most important one – the Delta Optical Extreme ED binoculars provide an extremely bright, sharp and contrasting image in the entire field of view!

The Extreme 10×50 ED model is a construction with parameters tested by users and considered universal. The magnification is high enough to see fine details, but also low enough to avoid jitter and keep the image bright. These binoculars can be used for hunting purposes. The Extreme 10×50 ED binoculars have a very large depth of field, which means that in many cases the adjustment of this parameter will not be necessary. As a very durable equipment, it will also work in professional applications such as property protection and as equipment for various types of services. Nature observers can also appreciate the quality of these binoculars – the obtained image will be bright, contrasting, with great colors, and due to the low-dispersion glass very detailed. The Extreme 10×50 ED binoculars are equipped with a 1/4 “tripod adapter.

The bodies of all Extreme ED models are made of durable metal and covered with a special rubber veneer, which, apart from good grip, provides effective shock absorption when the binoculars fall or hit. The mechanics of these devices can operate in a wide temperature range, from -40 ° to +70 ° C.

An important feature of the Extreme ED binoculars is also full waterproofness and protection against fogging from the inside, thanks to the casing being filled with nitrogen that does not contain water vapor. The large dimensions of the Extreme ED binoculars make it quite easy to use them with gloves on in winter conditions.

All Delta Optical Extreme ED models have a separate external focusing system for each eyepiece. Comfortable eyecups fit snugly around the sockets, blocking out light from the outside. This, combined with the large distance between the exit pupil and the glasses, ensures comfortable observations. The glasses of the binoculars also have built-in filter threads in the 1.25 “standard, so you can use nebula or polarizing filters.


  • tripod adapter ¼ “
  • binoculars case
  • optics cleaning material
  • strap for binoculars case
  • binoculars strip
  • objective caps
  • spectacle covers


Additional information



Magnification [x]


Objective lens diameter [mm]


Objective lens material

Glass ED

Optical coating


Twilight Factor


Relative brightness


Exit pupil [mm]


Eye relief [mm]


Angular field of view [deg.]

6,5 °

Linear FOW at 1000m [m]


Focus adjustment

external separate for glasses

Shortest focusing dist. [m]


Pupillary dist. adj. [mm]


Dioptre adjustment [D]


Prism system


Prism material

Glass BaK4



Nitrogen filling


Tripod mounting

Adapter ¼"

Weight [g]


L x W x H [mm]