Zeiss Mono 8x20 T*

• Compact pocket format: The slim 101.00 mm body and low 67.00 g weight make this monocular easy to keep close at hand for travel, events, and quick wildlife observation when a full-size optic would stay behind.
• 8x magnification with 20 mm objective: This configuration gives useful reach for distant details while keeping the monocular small enough for everyday carry, making it practical for scanning landscapes, identifying game, or following action in a stadium.
• ZEISS T* fully multicoated optics: The fully multicoated optical system is designed to improve contrast and light transmission, helping the image stay clear and usable in mixed light and preserving detail that can be lost with simpler coatings.
• Roof prism design: The Schmidt/Pechan roof prism layout keeps the monocular straight, compact, and easy to handle, so it slips into a pocket more naturally than bulkier prism systems.
• Nitrogen-filled weather protection: Waterproof, fogproof construction with nitrogen filling helps the optic remain reliable when moving between temperatures or using it in damp outdoor conditions.

About the Zeiss Monoculars Series

The ZEISS Monoculars series is built around the idea that a useful field optic should be easy to carry every day, not only on planned outings. The range includes the 3x12 T*, 4x12 T*, 6x18 T*, 8x20 T*, and 10x25 T* models, covering everything from close-range viewing to longer-distance observation in a format that fits comfortably in a pocket or small bag. Across the series, ZEISS positions these monoculars for outdoor use, sporting events, theaters, and nature observation, where portability matters as much as optical quality.

A defining feature of the line is ZEISS T* coating, which is adjusted to suit the individual lens design of each model. In practical use, that means better contrast and a cleaner, brighter image than compact optics often deliver. The series also offers diopter adjustment of up to plus or minus 4 diopters, which helps users fine-tune the image to their eyesight. Within the family, some models are optimized for very close viewing, while others are intended for more conventional distance observation, giving the series a broader role than a simple travel monocular.

About the Zeiss Mono 8x20 T*

The Zeiss Mono 8x20 T* is the distance-oriented middle ground in the ZEISS pocket monocular range. Its 8x magnification provides enough reach to pick out details across open ground, follow action at a sporting event, or study architecture and scenery while traveling, yet it remains easier to carry than a compact binocular. Paired with a 20.00 mm objective lens, it balances portability with enough front-lens area to keep the image practical in daylight and changing outdoor conditions.

The optical layout uses a Schmidt/Pechan roof prism, which helps keep the body narrow and straightforward to handle. That matters in a monocular because it is often used one-handed and brought into view quickly. The 110.00 m/1000m field of view is wide enough for general observation without making the image feel overly narrow at 8x, while the 2.50 mm exit pupil supports a bright, easy-to-center view in normal light. For users who wear glasses or need visual correction, the - 4.0 / + 4.0 dpt diopter range adds useful flexibility.

In the field, the Mono 8x20 T* stands out for how little space it takes up. At 67.00 g and 101.00 mm long, it is light enough for constant carry in a jacket pocket, daypack, or glove compartment. Its fully multicoated optics, nitrogen filling, and waterproof, fogproof construction make it a practical monocular for outdoor use where compact size should not mean delicate handling.

About Zeiss

ZEISS began when Carl Zeiss opened an optical and precision-mechanics workshop in Jena in 1846. Today the company is headquartered in Oberkochen, Germany and is widely associated with optical engineering across several fields. In sport optics, ZEISS develops binoculars, riflescopes, and spotting scopes for hunting and outdoor observation, with product families that range from Terra and Conquest models to the Victory line.

For this category, ZEISS is especially known for its lens technologies, including ZEISS T* coatings used in sport-optics products and LotuTec protective coatings used on hunting optics. The company’s range also includes products such as Victory RF binoculars, which combine binocular optics with an integrated laser rangefinder and ballistic functions through the ZEISS Hunting app. That background in compact optics, coatings, and field-oriented design is directly relevant to a monocular like the Mono 8x20 T*.

Main Features

• Manufacturer: Zeiss
• Series: Zeiss Monoculars
• Made in: Austria
• Magnification: 8.00 x
• Objective lens diameter: 20.00 mm
• Prism type: Roof - Schmidt/Pechan
• Lens coating: Fully Multicoated
• Field of view: 110.00 m/1000m
• Field of view (angular): 6.30 °
• Apparent field of view: 51.00 °
• Exit pupil: 2.50 mm
• Close focus: 3.00 m
• Diopter range: - 4.0 / + 4.0 dpt
• Twilight factor: 12.6
• Length: 101.00 mm
• Weight: 67.00 g
• Filled with: Nitrogen
• Waterproof: Yes
• Fogproof: Yes
• Working temperature range: - 20 / + 40°C
• Color: Black

Warranty

ZEISS provides a 10-year warranty for the Mono 8x20 T*. This stated warranty period supports the monocular’s role as a compact field optic intended for regular outdoor and travel use.

In the Box

• ZEISS Mono 8x20 T* monocular
• Carrying strap
• Soft leather case