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The optical design of the Sigma AF 28-70mm f/2.8 DG DN is based on the 24-70mm F2.8 DG DN | Art, which is renowned for its outstanding optical performance throughout its zoom range. True to the Contemporary line's core concept, the 28-70mm F2.8 DG DN | Contemporary was developed to offer the right balance of performance and portability, and as such, this large-aperture standard zoom delivers outstanding image quality that rivals Art line lenses in a body light enough for day-to-day use. Building on state-of-the-art technology, the 28-70mm F2.8 DG DN | Contemporary has an advanced optical design that includes three aspherical, two FLD, and two SLD elements. In short, the Sigma 28-70mm F2.8 DG DN | Contemporary combines all of the key optical features required of a large-aperture standard zoom lens, which are essential for photographing a wide variety of subjects in a range of shooting conditions.

The optical design of the Sigma AF 28-70mm f/2.8 DG DN is based on the 24-70mm F2.8 DG DN | Art, which is renowned for its outstanding optical performance throughout its zoom range. True to the Contemporary line's core concept, the 28-70mm F2.8 DG DN | Contemporary was developed to offer the right balance of performance and portability, and as such, this large-aperture standard zoom delivers outstanding image quality that rivals Art line lenses in a body light enough for day-to-day use. Building on state-of-the-art technology, the 28-70mm F2.8 DG DN | Contemporary has an advanced optical design that includes three aspherical, two FLD, and two SLD elements. In short, the Sigma 28-70mm F2.8 DG DN | Contemporary combines all of the key optical features required of a large-aperture standard zoom lens, which are essential for photographing a wide variety of subjects in a range of shooting conditions.

The Tamron 28-75mm F/2.8 Di III VXD G2 (Model A063) provides outstanding resolution and superb overall performance in a lightweight and compact zoom lens for Sony E-mount full-frame mirrorless cameras. High definition and spectacular image quality are the key areas of advancements. The Model A063 features a redesigned optical system but maintains a size similar to its predecessor. The lens provides exceptionally strong optical performance, edge-to-edge across the frame, throughout the entire zoom range, along with the soft, beautiful bokeh effects that are distinctive to fast aperture lenses. The lens features Tamron’s VXD autofocus motor to enable high speed, high precision auto-focusing. Closeup shooting capabilities have also been improved and achieve an MOD of 7.1” at 28mm and a maximum image magnification ratio of 1:2.7. It is equipped with new, groundbreaking features that enable users to easily perform customization and firmware updates themselves. For example, users can reverse the direction of the focus ring for manual focus operation. Additionally, Tamron has adopted a new design with improved ergonomics and revised the exterior coating of the lens body to improve scratch resistance. The filter size is 67mm, which is standard among Tamron's fast aperture zoom lens series and enables the sharing of lens caps, filters, and other accessories. In addition to features such as Moisture-Resistant Construction and a protective Fluorine Coating, the lens supports various features built into Sony E-Mount cameras, including Fast Hybrid AF, Eye AF and in-camera lens corrections (shading, chromatic aberration, distortion).

The 17-70mm F/2.8 Di III-A VC RXD (Model AFB070S700) is a large aperture everyday zoom lens for Sony E-mount APS-C mirrorless cameras. Fast, sharp, quiet, and small—this new APS-C zoom lens is extraordinarily versatile and perfect for everyday photography. The lens was created to achieve a broad zoom range and excellent image quality. With a focal length range of 17-70mm (a full-frame equivalent of 25.5-105mm), it’s the world's first 17-70mm F2.8 standard zoom lens with a 4.1x zoom ratio for APS-C cameras. The 17-70mm F2.8 includes Tamron's proprietary VC (Vibration Compensation). When shooting video, by utilizing AI technology, image stabilization performance improves compared to conventional models. Designed specifically for use with APS-C mirrorless cameras, the lens is light weight and compact, even with VC. Its small size and versatility make it a great choice for outdoor, travel and vacation photography, where compact camera bags are preferred, and of course for daily use. Additionally, photographers / users can take advantage of a close working distance. It features an MOD (Minimum Object Distance) of 0.19m (7.5 in) at the wide-angle end and 0.39m (15.4 in) at the telephoto end. The lens is equipped with Tamron’s RXD (Rapid eXtra-silent stepping Drive) AF drive system, a high-speed, precision stepping motor unit. It also incorporates a wide variety of other features, including Moisture-Resistant Construction and Fluorine Coating for added durability. In your everyday life and on your trips to distant places, this lens captures all the excitement and discoveries with the finest possible detail.

Sony G Master FE 24-70 mm F2.8 GM Full-Frame E-Mount Standard Zoom Lens: Explore the versatility this Sony 24-70mm F2.8 GM camera lens brings to your photography, whether your shoot for fun or profit. This full-frame lens features a constant maximum aperture so that you can take incredible action. Direct Drive SSM offers quiet operation which is ideal for video and lets you focus this standard Sony 24-70mm F2.8 GM camera lens quickly.
| Pros for Sigma - AF 28-70mm f/2.8 DG DN for Sony E-Mount Cameras - Black | |||
|---|---|---|---|
| There were no pros for this product— | Versatility, Image Quality, Autofocus, Weight, Focal Range | There were no pros for this product— | Versatility, Lens Quality, Build Quality, Low Light Performance |
| Cons for Sigma - AF 28-70mm f/2.8 DG DN for Sony E-Mount Cameras - Black | |||
| There were no cons for this product— | There were no cons for this product— | There were no cons for this product— | Weight, Price, Size |
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