The choice of the camera lenses is not an easy task, which sooner or later comes before every owner of a SLR camera. In some cases, the lens has a much greater impact on the quality of photos than the camera itself.
The camera lenses are divided according to the manufacturer of the system camera and lens, the type, the luminosity, the presence or absence of a zoom lens, and even the diameter of the thread for the light filters.
When purchasing a lens, the following characteristics should be considered.
The construction of the fastening unit is bayonet.
Different manufacturers have different, so the lens of one company may not approach the camera the other. Although some companies produce lenses for all kinds of cameras. In addition, in some cases, you can use adapters. Bayonets of different manufacturers are marked (for example, EF, EF-S, Alpha (angel), KAF, SA, etc.). Detailed information on which cameras you can use these or other lenses can be easily found on the Internet.
Focal length of the lens.
This is the distance from the matrix to the lens. The smaller the focal length, the greater the viewing angle. If it is approximately equal to the diagonal of the matrix, then the viewing angle corresponds to the capabilities of the eye. If more, this is a telephoto lens that reduces the angle of view, but approximates objects. In a wide-angle lens, the focal length is smaller than the diagonal of the matrix. With it, you can "fit" a large-scale landscape into the frame, but the details will be reduced. Distinguish between true and equivalent focal lengths. If the size of the matrix is the same as the film frame (full-frame matrix), then these quantities are equal. With a digital matrix, the focal length is proportionally smaller.
Diaphragm, allowing to change the amount of light passing through the lens. It allows you to adjust the depth of field and the brightness of the image of the object. The smaller the digital aperture value, the more light it misses, the more possibilities you have. For example, you can shoot in poor light.
The size of the matrix.
In the most accessible "mirrors" the matrix APS-C (16,7x25,1 mm), instead of full-frame (24x36 mm) is used. The main manufacturers of photographic equipment produce sets of lenses for the matrix APS-C.
Image stabilization technology that prevents image blur at high shutter speeds. In a sense, it is a "built-in tripod". The presence of such a system is especially useful in telephoto lenses
In the online store Domstoria presented SLR camera lenses of only high quality from the world's leading manufacturers!
You can see the characteristics of the models on the product page.