Yongnuo YN 42.5mm f/1.7 II Lens for Micro 4/3

Improved Optical Performance and Design

The Yongnuo YN 42.5mm f/1.7 II is an upgraded version of the well-regarded lens designed for the Micro 4/3 system. Featuring a bright f/1.7 aperture and a 42.5 mm focal length (equivalent to 85 mm on full-frame), it delivers effective background blur and attractive image depth, ideal for portrait photography. The lens incorporates ED elements to correct chromatic aberrations and a refined optical design of 9 elements in 8 groups for enhanced image quality.

Advanced Autofocus System

Equipped with an STM (Stepper Motor) autofocus system, the lens offers smooth, quiet, and precise focusing. Upgraded algorithms improve focusing speed and accuracy, making it suitable for both still photography and video recording. An AF/MF switch on the lens body allows quick transition to manual focus mode for greater control.

Ergonomic and Compact Build

The lens features a refreshed ergonomic design with a wide, comfortable manual focus ring and a broad lens hood. Constructed with lightweight materials, it weighs only 135 grams, making it an excellent travel companion. The metal bayonet mount with gold-plated contacts ensures a secure and reliable connection to the camera body.

Key Features

• Upgraded version of the popular Yongnuo YN 42.5mm f/1.7 lens
• Bright f/1.7 aperture for excellent low-light performance and shallow depth of field
• 42.5 mm focal length (85 mm full-frame equivalent) ideal for portraits
• Optical design: 9 elements in 8 groups including ED elements for chromatic aberration correction
• STM autofocus motor for smooth, quiet, and precise focusing
• Improved focusing algorithms for faster and more accurate autofocus
• Compact and lightweight at 135 g, suitable for travel and everyday use
• Metal bayonet mount with gold-plated contacts for durability and reliable communication
• Minimum focusing distance of 30 cm
• Wide and ergonomic manual focus ring and lens hood