General description of the photo lens Canon EF 28-135 mm F 3.5-5.6 IS USM for Canon DSLR digital cameras
The Canon EF 28 - 135 mm f / 3.5 - 5.6 IS USM lens, which has recently appeared on the domestic market of photographic equipment, belongs to the class of standard lenses with a zoom function. Due to its wide-angle technical parameters, this lens is capable of taking really excellent pictures of landscapes and various panoramas. The maximum magnification is 0.19 x. Thanks to the use of the most advanced technology in the creation of this lens, its physical dimensions have been significantly reduced. Now the length of the photo lens is equal to 96.8 mm, and its diameter is 78.4 mm. Such technical parameters will appeal to every photographer who prefers traveling "light". Because you can never predict where and under what circumstances the opportunity will arise to make your own “frame in a million”. And it is quite problematic to carry heavy and voluminous lenses with you all the time. With the new Canon EF 28 - 135 mm f / 3.5 - 5.6 IS USM, the whole situation changes dramatically. Its dimensions, as well as a weight of 540 grams, will appeal to every fan of tourist trips and outings to nature.
The design of this lens is formed from 16 separate elements, which were arranged in 12 groups. Also, for the most realistic and uniformly blurred background, a 6-blade diaphragm was included in the lens. They allow you to blur the background, which is outside the focal area of the frame, as uniformly and attractively as possible. The diameter of the filter thread, which serves to create additional optical effects or suppress "excess light", in this model is exactly 72 millimeters. With such a high aperture value, which by the way equals 3.5 - 5.6, all the resulting images, even in low ambient light conditions, will be of the highest possible quality. As stated earlier, the lens is listed as a wide-angle lens. Therefore, all viewing angles are equal: horizontally 65 - 15 degrees, vertically 46 - 10 degrees, diagonally 75 - 18 degrees. Taking into account the availability of optical zoom, the latest image stabilization is built into this model of the photo lens to improve the quality of still images. The built-in gyroscopic sensors are responsible for the correctness and efficiency of its operation. They were also located inside the lens barrel. Reacting very subtly to the slightest movement, this lens significantly reduces the effect of digital camera shake.
The extremely high quality of the image makes it possible to lower the shutter speed values, when photographing "hand-held", by several steps at once. In this case, you should not be afraid of deterioration in quality or blurring of the picture. At 135 mm, the maximum magnification of this photo lens is only 0.19 x. the value of the minimum aperture ranges from 22 to 36. The minimum value of the distance for 100% quality focusing is 50 centimeters. This value makes it possible to take photographs of any objects from a sufficiently close distance. And also to create excellent portrait photos, successfully use the lens in macro photography or simple work in the studio. The built-in upgraded USM ultrasonic motor has a great effect on the efficiency of the autofocus of the lens. Now her performance has become even higher. Automatic focusing here has become super fast and almost silent, which has a very positive effect on the ability to create a particular photo.
Canon's new EF 28 - 135 mm f / 3.5 - 5.6 IS USM lens also courteously allows for self-focusing of the image. Now, to use it, there is no need to switch focusing modes, which means there is no need to waste precious moments of time. Manual focus is now always available. Even in autofocus mode, the photographer can easily make additional focus corrections using the focus ring built into the lens.
The optical system of this lens also uses a special aspherical element, the work of which has a positive effect on resisting the emerging chromatic aberrations. Thus, providing the maximum clarity of the image and the highest resolution, over the entire area of \ u200b \ u200bthe photograph. Each lens and other lens elements of the Canon EF 28 - 135mm f / 3.5 - 5.6 IS USM are created exclusively from natural, environmentally friendly organic glass, without the use of any toxins or heavy metals such as lead.
This lens is perfect for all photographers looking to get a high quality, reliable, functional, and at the same time compact and lightweight lens model. And given its focal length range, the lens is a really great choice for many correspondents and photographers in the portrait, studio and macro genres.
