What does zoom ratio mean (what does lens zoom ratio mean)

What does zoom ratio mean? Look-up table of focal length-focal length ratio formula. This website provides you with more relevant information for your understanding.

Longteng Company, a manufacturer of integrated optical products, developed and released the large zoom lens of a mirrorless camera in APS-C format on July 21-18-300mMF/3.5-6.3ii-a ※1vcvxd, and its Sony E-mount version will be released in July 20265438. Due to the COVID-19 epidemic, the listing and delivery time may be delayed.

B06 1 developed with the concept of "a large zoom lens covering a wide angle of 27mm to a telescopic lens of 450mm, which can be used in various photographic scenes". As a zoom lens suitable for APS-C mirrorless camera, its zoom magnification reaches 16.6 times. Auto-focus drive is equipped with linear motor focusing mechanism VXD, which has excellent quietness and rapidity. Through the balanced configuration of special material lens, it brings excellent expressive force from the center of the picture to the surrounding, and strives to achieve high image quality on the large zoom lens.

18mm wide-angle end, nearest shooting distance 0. 15m, maximum shooting magnification 1:2. Although it is a large zoom lens, it can play an excellent close-up performance. The lens is equipped with VC anti-shake system developed by Longteng, which helps you to get stable images when shooting in low illumination and outside the telescope. The aperture of the filter is φ67mm, which is the same as that of most Longteng mirrors. With rich photographic auxiliary functions, it is a very practical lens, which allows you to easily enjoy high quality from wide angle to ultra telephoto.

■ Product features

1. 16.6 times large zoom lens, which can cover long focus.

B06 1 zoom ratio is as high as 16.6 times, and the equivalent focal length of 35mm is 27-450mm. It provides a variety of focusing options, from daily life to travel capture, from dynamic landscape photography to macro photography, and one lens can flexibly cope with a variety of photography scenes.

2. Equipped with VXD with high-speed and high-precision autofocus performance.

B06 1 is equipped with Longteng's own linear motor focusing mechanism VXD, which has excellent autofocus speed and accuracy. From the wide-angle end to the ultra-telephoto end, it brings you an easy and fast focusing experience. Excellent dynamic object tracking performance, also very suitable for animals, aircraft, railway photography. Good silence makes the lens suitable for still photography and video shooting in a quiet environment.

3. The nearest shooting distance of18mm wide-angle end is 0. 15m, and the maximum shooting magnification is 1:2.

B06 1 As a large zoom lens, it has amazing close-up performance. Let you approach the subject as you like, and create macro works with blurred and beautiful background. As a rich experience of large zoom lens, Longteng also showed his creativity in the field of close-ups.

※2 When shooting at a recent shooting distance of 0. 15m, the distance between the subject and the front end of the lens is about 5mm. Please be careful not to let the subject touch the front lens.

4. High image quality

In order to achieve the zoom ratio of 16.6 times and high image quality at the same time, B0 1 lens is equipped with three composite aspherical lenses and four LD lenses in a balanced way, which effectively suppresses various aberrations and has high resolution from the center to the periphery of the picture, thus achieving high image quality performance.

5. Equipped with VC anti-shake system

B06 1 The VC anti-shake system developed by Longteng is added while keeping the size small. No matter whether the camera body has built-in anti-shake function or not, the VC of the lens itself can effectively play an anti-shake effect under low illumination conditions such as indoor and night scenes. In addition, with the help of AI technology, the anti-shake effect optimized for video can be obtained when shooting video below 70 mm.

6. Compact design

7. Simple anti-drip structure, anti-pollution coating, zoom locking device and other photography auxiliary functions help you shoot easily and conveniently.

8. Corresponding to various built-in functions such as "high-speed hybrid AF" and "eye movement AF" of Sony camera.

Specifications, appearance and functions are subject to change without prior notice.

This product is developed, manufactured and sold based on the authorized E-bayonet specifications and standards under the license agreement signed with Sony.