The lens from Jiayou online mm focal length is a very familiar and commonly used lens for people who like humanistic photography. Moreover, it is a characteristic focal section, and it is difficult to use. For example, the famous Ricoh GR series digital camera uses a 28mm lens, which has a large number of loyal fans. Compared with another common focus of 35mm, 28mm has a greater depth of field, which brings a stronger sense of perspective. This article is to introduce such a 28mm lens, seven craftsmen m28mm f1.4.
seven craftsman m28mm f1.4 is a Leica m-bayonet lens. Leica’s original factory also has the same specification of sumilux-m 28mm f / 1, 4 ASPH. But undoubtedly, the m28mm f1.4 is more cost-effective, and it is more suitable for full frame micro single digital cameras such as Sony, Canon, Nikon and Panasonic.
seven craftsmen want to make this m28mm In f1.4, a piece of double-sided aspheric glass, two pieces of ED glass, three pieces of high fold rare-earth glass, a total of 9 groups of 11 pieces of optical glass lens are adopted. The material selection characteristics of each piece of glass are fully utilized, and the image quality from the center to the corner is excellent. It is explained that such an environmental portrait lens can be easily obtained in the narrow and dark indoor environment Abundant visual angle and light quantity, even random record street and building under night.
seven craftsmen m28mm f1.4 mirror body is made of all metal material and weighs about 488g. The mirror body is equipped with diaphragm ring, focusing ring, distance scale and depth of field indication scale. The overall size of the lens is moderate, and the diaphragm ring and focusing ring damping feel good, which is very important for a manual focusing lens.
in terms of lens structure, seven craftsman m28mm f1.4 adopts 9 groups of 11 pieces of design, including one double-sided aspheric glass, two pieces of ED glass, and three pieces of high fold rare earth glass. It makes full use of the material selection characteristics of each piece of glass as much as possible, so that the image quality of lens imaging from the center to the corner has excellent performance. The size of lens filter is 52mm, and the nearest focusing distance is 0.7m.
the aperture of m28mm f1.4 of seven craftsmen is a circular aperture composed of 13 diaphragm leaves, with the maximum aperture f1.4 and the minimum aperture F16.
let’s test the resolution of m28mm f1.4 of laoranqi craftsman in the actual scene. The whole scene has rich levels of detail, and the use of positive composition is also to ensure that the edge of the picture can also be in focus, so as to better reflect the resolution of the edge, so as to be relatively objective.
through comparison, we can see that the performance of each stop in the frame center of m28mm f1.4 lens of seven artisans is very good, and the image quality is the best when the aperture receives F4. The resolution of the edge is decreased relative to the center, and the optimal aperture is also at F4.
through the actual shooting test, we can see that the seven craftsman m28mm f1.4 has always had obvious dark angle, and there is no obvious change with the reduction of the aperture, so more attention should be paid to it when shooting. However, in the actual shooting, if you can consciously use the dark angle, you may get unexpected effects.
in terms of distortion control, the seven craftsman m28mm f1.4 performed fairly well, and only slight barrel distortion was found in the center of the test screen, so there was no need to pay too much attention to when shooting.
as a lens suitable for Humanistic street sweeping, the seven craftsman m28mm f1.4 is very good in volume, which is suitable for hanging camera lens. At the same time, as a Leica m-bayonet lens, the optical performance of the seven craftsman m28mm f1.4 is definitely incomparable with that of the original factory. Moreover, compared with the Leica camera, the m28mm f1.4 of the seven craftsman is more suitable to be used in the Japanese full frame micro single through the mounting ring. For these users, this is a large aperture humanistic lens that can be experienced without too much cost.