Modelo 280751

Fig. 4

Modelo 280750

Quando o limite superior e/ou inferior do alvo ultrapassar os mil do retículo, ele poderá ser medido em etapas e o ângulo é obtido somando-se o valor de cada etapa. (O processo será similar àquele previamente descrito na seção de medidas lin- eares).

Fig. 5

Como usar o retículo para medir distâncias

A medida da distância a um alvo pode ser calculada usando-se o retículo subdividido em mil. Veja o exemplo na Fig. 5 acima. (Observação: o mesmo conceito e fórmula se aplicam ao usar o retículo vertical em qualquer um dos modelos do binóculo Tactical; apenas o retículo do modelo 280750 é mostrado na Fig. 5).

A fórmula para medir a distância é: L(km)=H(m)/w

L = distância entre o observador e o alvo (em quilômetros). H = altura do alvo (em metros)

w= ângulo superior e inferior do azimute do alvo medido com o retículo do binóculo (em mil).

Ao medir a distância, primeiro estime a altura ou largura do alvo e meça então seu ângulo superior e inferior. A distância entre o observador e alvo pode também ser medida usando essa fórmula.

Por exemplo:

Há um farol. Sabe-se que sua altura é aproximadamente 30 metros. (H=30)

O ângulo superior e inferior do farol medido pelo retículo na Fig. 5 é 0 – 60 mils (w=60)

Sendo assim, usando-se a fórmula: L=H/w=30/60=0,5 km

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Portanto, a distância entre o observador e o farol é de 0,5 km.

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Bushnell 280750, 280751 warranty Como usar o retículo para medir distâncias

280751, 280750 specifications

The Bushnell 280750 and 280751 represent a significant advancement in the field of optics, offering exceptional performance for outdoor enthusiasts, hunters, and bird watchers alike. These binoculars are designed with a range of innovative features and technologies that cater to both casual users and those who demand professional-grade equipment.

One of the standout features of the Bushnell 280750 is its powerful magnification capabilities. With a 10x magnification and a 42mm objective lens diameter, this model provides bright and clear images, allowing users to observe distant subjects with precision and detail. The wide field of view further enhances the viewing experience, making it easier to track moving objects, be it wildlife in action or athletes during a sporting event.

In contrast, the Bushnell 280751 offers an even more powerful 12x magnification, which allows for close-up views of faraway subjects. This model, too, boasts a 42mm objective lens, ensuring that it captures ample light to maintain image brightness and clarity in various lighting conditions. Both models feature multi-coated optics that enhance light transmission, resulting in sharper images and vivid colors even in low-light environments.

Durability is a key characteristic of the Bushnell 280750 and 280751. Both models are housed in a rugged, shock-absorbing outer shell that can withstand the rigors of outdoor use. The waterproof and fog-proof design ensures that these binoculars can perform reliably in challenging weather conditions, making them the ideal companion for adventurers exploring diverse environments.

Another notable technology integrated into these binoculars is the use of BaK-4 prisms. This optical technology enhances image quality by providing a bright and clear view across the entire field of vision. The ergonomic design of the Bushnell 280750 and 280751 with non-slip rubber armor offers a comfortable grip, reducing the chances of drops and providing added protection against the elements.

In summary, the Bushnell 280750 and 280751 binoculars are designed for those who prioritize performance, durability, and clarity in their optical instruments. With impressive magnification options, advanced optical technologies, rugged construction, and a user-friendly design, these binoculars are sure to satisfy the demands of outdoor enthusiasts at any level. Whether for birdwatching, hunting, or simply exploring the beauty of the great outdoors, both models provide a reliable and enjoyable viewing experience.