Sigma 18-50mm F2.8 DC DN Contemporary DSLR Camera Lens for Sony E Mirrorless Cameras (585965, Black)

Product Overview

The Sigma 18-50mm F2.8 DC DN Contemporary is a compact, lightweight standard zoom designed for Sony E-mount crop-sensor mirrorless cameras. It offers a versatile 18-50mm focal range (27-75mm full-frame equivalent) with a constant bright aperture of f/2.8 across the entire zoom range, enabling consistent exposure in varied lighting. The lens employs an optical design with three glass-molder aspherical elements and a low-dispersion element to minimize aberrations while keeping weight down. Its fast, quiet autofocus is powered by a stepping motor, and the minimum focusing distance is 4.8 inches, allowing for close-up shooting and creative framing. The lens features a rounded seven-blade diaphragm for smoother bokeh and is available in black. Model number 585965, released on 2021-10-28.

Key Features

• Constant f/2.8 across the 18–50mm zoom range for consistent exposure and low-light flexibility
• Compact, lightweight design tailored for crop-sensor Sony E-mount cameras
• Full-frame equivalent focal length of 27–75mm, suitable for landscapes, portraits, street, architecture, and events
• Fast, quiet autofocus driven by a stepping motor, beneficial for video and moving subjects
• Minimum focusing distance of 4.8 inches (12.3 cm) enables closer, macro-style photography
• Optical arrangement includes three glass-molded aspherical elements and a low-dispersion element to minimize aberrations
• Rounded seven-blade diaphragm for pleasing background blur

Why This Product Is Recommended

• Versatile zoom range that covers common photo scenarios from wide landscapes to portraits, all with a constant bright aperture for reliable exposure in mixed lighting
• Designed specifically for Sony E-mount crop-sensor cameras, offering a practical focal length on APS-C bodies without needing a dedicated full-frame lens
• Combination of compact size, light weight, and advanced optical elements provides a balanced option for everyday carry, travel, and budget-conscious photography and videography

FAQs

• Q: What camera system is this lens designed for?
  A: It is designed for Sony E-mount crop-sensor mirrorless cameras, offering a 27–75mm equivalent field of view on APS-C bodies.
• Q: What is the maximum aperture, and does it stay constant?
  A: The lens has a constant maximum aperture of f/2.8 across the entire zoom range (18–50mm).
• Q: How close can you focus?
  A: The minimum focusing distance is 4.8 inches (about 12.3 cm), enabling close-up subjects and macro-style framing.
• Q: How is the autofocus performance?
  A: Autofocus is described as fast and quiet, thanks to the stepping motor, which can be advantageous for photography and video, including moving subjects.
• Q: What makes the optical design suitable for real-world use?
  A: The lens uses three glass-molded aspherical elements plus a low-dispersion element to reduce aberrations while maintaining a compact form factor, contributing to clearer images across the zoom range.
• Q: Is this lens good for video?
  A: Yes. The combination of a stepping motor for smooth autofocus and a bright f/2.8 aperture supports versatile video work, especially in low light or shallow depth-of-field contexts.
• Q: What subjects is this lens ideal for?
  A: It is suitable for landscapes, portraits, street photography, architecture, and events, providing flexibility in a single, lightweight lens.
• Q: Is this a full-frame lens?
  A: It is a DC DN Contemporary lens intended for Sony E-mount crop-sensor bodies; it provides a 27–75mm equivalent range on those sensors.