Nikon 8 X 40 CF Action

Optical Performance

Moderate 8x magnification brings subjects in close while ensuring a wide field of view and exit pupil and minimizing the appearance of visible hand shake—essential for glassing on the water

Moderate 40mm objective lenses provide improved low-light performance versus smaller-objective models, without adding excessive weight

Traditional Porro prism design makes it comfortable to hold and presents a rich depth of field

High-index BAK4 prisms deliver a round exit pupil and a crisp and clear image with limited edge distortion

Anti-reflection fully multi-coated optics produce neutral and accurate color fidelity and improve contrast and image brightness

Wide 60° apparent angle of view provides sweeping views, with less disorientation, which is commonly felt when glassing on rough or rolling water

430-foot field of view at 1000 yards

Use and Handling

Large textured and slip-resistant center fast-focusing knob is easy to manipulate in cold or wet weather or while wearing gloves

Right-eye dioptric correction enables users to compensate for individual optical prescriptions for clearer views; large adjustment lever is easy to find and use 56-72mm interpupillary adjustment range allows use by a wide variety of people

Twist-up/click-stop rubber eyecups for comfortable use with or without eyewear

Tripod mountable with optional adapter enables hands-free use to eliminate hand shake/vibrations and arm fatigue

Long 17.2mm eye relief helps to reduce eyestrain and improves viewing comfort

Comfortable 5mm exit pupil will completely cover pupils to keep the full scene in view and limit disorientation

Construction Details

Environmentally friendly prism and lens feature Eco-Glass that is made without lead and arsenic

Protective textured rubber armoring provides a slip-resistant grip in cold or wet weather

Nitrogen filled and O-ring sealed to be waterproof and resistant to internal fogging when moving through extreme changes in temperature and environmental conditions

One-piece tethered ocular rainguard protects eyecups from water pooling in them from rain or spraying water when hanging from the neck

Objective lens caps can be clipped to neck strap to avoid losing them during observation sessions