![]() Yet residual chromatic aberration known as “secondary spectrum” may still remain. Most chromatic aberration can be removed by combining a high-refractivity convex lens element with a low-refractivity concave element. The result is chromatic aberration, the color fringing that is particularly noticeable in telephoto lenses. ![]() This fact causes different colors of light to focus at slightly different points. The degree to which light is refracted by glass depends on the light’s wavelength. Introducing the new and greatly enhanced “light bazooka” ultra-telephoto zoom lens. Offering a combination of stunning image quality and outstanding functionality, this lens satisfies the needs of pros and amateurs alike. This approach results in a tempting new ultra-telephoto choice for photographers. SIGMA 100-400mm F5-6.3 DG OS HSM | Contemporary offers the compact size, lightweight, and high cost performance of a 70-300mm lens while delivering 400mm telephoto performance. With the goal of creating an ultra-telephoto lens that is far more accessible, SIGMA incorporated all of its latest technologies into SIGMA 100-400mm F5-6.3 DG OS HSM | Contemporary. ![]() As the nickname “bazooka” implies, they have tended to be big, heavy, and therefore burdensome to carry around. Nevertheless, ultra-telephoto lenses have traditionally had some disadvantages as well. The photographer can thereby make the subject appear to jump out of the image, with the area in focus impressively sharp and clear. The narrow angle of view makes it possible to dramatically compress perspective and flexible handling of the background. The OS allows the photographer to take photographs in unstable circumstances. An ultra-telephoto lens with an optical stabilizer (OS) system has several advantages. ![]()
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