Expert Binocular Group

Product Info

The ZEISS SFL 10x40 (SmartFocus Lightweight) are high-performance binoculars designed for enthusiasts who demand exceptional optics in a lightweight and compact package . They are an ideal companion for various outdoor activities, including birdwatching, hunting, hiking, and nature observation . The model strikes an excellent balance between the light-gathering ability of a 40mm objective lens and a reduced overall weight, making them comfortable for extended use .

The "SFL" designation highlights the core design philosophy: to create a binocular that is significantly lighter and more compact than traditional high-end models without compromising on optical quality . By reducing the lens diameter by 2mm and using thinner lens elements spaced more closely together, ZEISS engineers achieved a weight reduction of up to 20% and a volume reduction of up to 13% compared to the Victory SF 42 models .

Specifications

Here are the detailed technical specifications for the ZEISS SFL 10x40:

Key Features

Ultra-Lightweight and Compact Design
The defining feature of the SFL series is its portability. The magnesium housing is both lightweight and durable, ensuring the binoculars can withstand the rigors of outdoor use while being easy to carry all day . They are up to 30% lighter than some comparable competitor products .

Ultra-High-Definition (UHD) Concept
The UHD concept delivers an image with true-to-life color reproduction and exceptional detail. This sophisticated optical design, combined with advanced lens coatings, minimizes optical aberrations and color fringes, allowing for reliable identification of even the smallest features .

SmartFocus Concept
The large focus wheel is ergonomically positioned on the DoubleLink bridge for intuitive and precise handling. It requires only 1.4 turns from the close focus to infinity, enabling fast and accurate focusing even when wearing gloves .

High Light Transmission (90%) with ZEISS T Coating*
The binoculars feature 90% light transmission, ensuring bright and clear images even in challenging light conditions like dawn and dusk . This is achieved through the advanced ZEISS T* multicoating, which is meticulously tuned to each lens element for maximum clarity and high-contrast images .

LotuTec Coating and Nitrogen Filling
The lenses are protected by ZEISS's proprietary LotuTec coating, which causes water to bead up and roll off, ensuring a clear view in wet weather. They are also nitrogen-filled and waterproof to 400 mbar, making them fogproof and reliable in all weather conditions .

Wide Field of View and Close Focus
With a field of view of 115 meters at 1,000 meters, users can maintain excellent situational awareness and track moving subjects easily . The impressive close focusing distance of 1.5 meters allows for detailed observation of butterflies, insects, or other small subjects up close .