About Cabling Installation & Maintenance

Our mission: Bringing practical business and technical intelligence to today's structured cabling professionals

For more than 30 years, Cabling Installation & Maintenance has provided useful, practical information to professionals responsible for the specification, design, installation and management of structured cabling systems serving enterprise, data center and other environments. These professionals are challenged to stay informed of constantly evolving standards, system-design and installation approaches, product and system capabilities, technologies, as well as applications that rely on high-performance structured cabling systems. Our editors synthesize these complex issues into multiple information products. This portfolio of information products provides concrete detail that improves the efficiency of day-to-day operations, and equips cabling professionals with the perspective that enables strategic planning for networks’ optimum long-term performance.

Throughout our annual magazine, weekly email newsletters and 24/7/365 website, Cabling Installation & Maintenance digs into the essential topics our audience focuses on.

  • Design, Installation and Testing: We explain the bottom-up design of cabling systems, from case histories of actual projects to solutions for specific problems or aspects of the design process. We also look at specific installations using a case-history approach to highlight challenging problems, solutions and unique features. Additionally, we examine evolving test-and-measurement technologies and techniques designed to address the standards-governed and practical-use performance requirements of cabling systems.
  • Technology: We evaluate product innovations and technology trends as they impact a particular product class through interviews with manufacturers, installers and users, as well as contributed articles from subject-matter experts.
  • Data Center: Cabling Installation & Maintenance takes an in-depth look at design and installation workmanship issues as well as the unique technology being deployed specifically for data centers.
  • Physical Security: Focusing on the areas in which security and IT—and the infrastructure for both—interlock and overlap, we pay specific attention to Internet Protocol’s influence over the development of security applications.
  • Standards: Tracking the activities of North American and international standards-making organizations, we provide updates on specifications that are in-progress, looking forward to how they will affect cabling-system design and installation. We also produce articles explaining the practical aspects of designing and installing cabling systems in accordance with the specifications of established standards.

Cabling Installation & Maintenance is published by Endeavor Business Media, a division of EndeavorB2B.

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Sigma Introduces 24-70mm F2.8 DG DN II Art Lens; More Info at B&H Photo

Sigma has announced version II of their flagship 24-70mm f/2.8 lens, featuring improved optics, faster AF performance, and a smaller, lighter design.

B&H is pleased to share the new Sigma 24-70mm f/2.8 DG DN II Art lens, featuring improved optics, a smaller and lighter design, and faster focusing performance. It’s an evolution of one of their most beloved, flagship lenses and a standout zoom within their DG DN Art lineup with enough versatility to handle everyday shooting needs.

This press release features multimedia. View the full release here: https://www.businesswire.com/news/home/20240516525384/en/

Flagship Evolution: Sigma 24-70mm f/2.8 DG DN II Art Lens (Photo: Business Wire)

Flagship Evolution: Sigma 24-70mm f/2.8 DG DN II Art Lens (Photo: Business Wire)

Sigma’s reputation for optical excellence doesn’t disappoint, and you can expect to produce well-controlled, sharp, and color-rich imagery in a variety of conditions. The lens has been redesigned to achieve greater sharpness throughout the zoom range and improved clarity and consistency throughout the aperture range, with excellent rendering all the way to f/2.8. Aspherical elements, FLD, and SLD are all present in the optical layout, as well as Nano Porous and Super Multi-Layer Coatings.

Thanks to the upgraded optics, this lens is now able to focus as close as 6.7” at the wide end, compared to 7.1” with the previous version. This slight-but-significant improvement equates to a 1:2.7 maximum magnification ratio, making this a suitable lens for close-up shooting. Also, Sigma has reduced focus breathing to help keep the angle of view consistent while recording video.

The new version of the 24-70mm f/2.8 has a more compact, nimble build along with improved on-lens controls. Compared to the first gen lens, this one is approximately 7% smaller and 10% lighter—it measures 4.7” long and weighs 1.6 lb while the original is 4.8” long and 1.8 lb. In addition to the sleeker profile, the version II gains a manual aperture ring for easier switching between f/stops and the ring can be de-clicked to benefit video applications. Also, it now sports two AFL buttons—the second button is on top of the lens and suits shooting in vertical orientation.

Autofocus performance has been improved too with the addition of an HLA (High-response Linear Actuator) motor that is up to three times faster than its predecessor for quicker, more responsive focusing to better capture moving subjects.

The 24-70mm f/2.8 II retains its dust- and splash-resistant construction, a water- and oil-repellant coating, and a zoom lock switch to keep the lens set at the widest focal length and smallest length during travel. It also includes a petal-style lens hood and features the same 11-blade diaphragm design as its predecessor, which is great for bokeh quality. Also, as expected, the lens will be available in both Sony E and L-mount versions.

The 24-70mm f/2.8 II lens will be available in both Sony E and L-mount versions.

YouTube First Look – Sigma 24-70mm f/2.8 II lens

https://youtu.be/SyOPzoWukvk

Learn all about the Sigma 24-70mm f/2.8 II lens

https://www.bhphotovideo.com/explora/videos/photography/flagship-evolution-sigma-24-70mm-f28-dg-dn-ii-art-lens

About B&H Photo Video

As the world's largest source of photography, video, and audio equipment, as well as computers, drones, and home and portable entertainment, B&H is known worldwide for its attentive, knowledgeable sales force and excellent customer service, including fast, reliable shipping. B&H has been satisfying customers worldwide for over 50 years.

Visitors to the website can access a variety of educational videos and enlightening articles. The B&H YouTube Channel has an unmatched wealth of educational content. Our entertaining and informative videos feature product overviews from our in-house specialists. You can view the B&H Event Space presentations from many of the world's foremost experts and interviews with some of technology's most dynamic personalities. Tap into this exciting resource by subscribing to the B&H YouTube Channel here. In addition to videos, the B&H Explora blog presents new product announcements, gear reviews, helpful guides, and tech news written by product experts and industry professionals, as well as our award-winning podcasts.

When you’re in Manhattan, take a tour of the B&H Photo SuperStore, located at 420 Ninth Avenue. The techno-carousel spins all year round at the counters and kiosks at B&H. With hundreds of products on display, the B&H Photo SuperStore is the place to test-drive and compare all the latest gear.

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