Steiner Optik XP manual Exit pupil, Storage, Cleaning

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Exit pupil

Look through your binoculars and then move it about 12 inches away from your eyes. You will see a bright circle within the oculars. This dictates how much light gets to your eye. The exit pupil is measured in millimeters (mm) and is a crucial indicator for low-light performance of a binocular. A human pupil can open up to 6 mm in low light and accordingly, binoculars that are used in low-light

Formula for Exit pupil:		c o n d i t i o n s
		should offer a
Exit pupil =	Objective lens Diameter
	Magnification	large exit pupil.

Storage

When not using your STEINER XP binoculars you should store them in a cool dry spot. Avoid storage in spaces ex- posed to direct sunlight (i.e. in a car) or with extreme temperature changes.

Cleaning

Clean your binoculars by wi- ping the rubber armoring with a damp cloth. More stubborn dirt may require a light soap and water solution on a damp cloth. The Nano Protection Optics of your XP binoculars repels dirt or water to form on the lenses – simply wipe the objective or ocular lenses gently with the cleaning cloth that came in the original box. Clean the lenses only when necessary and never use any acrid cleaning solutions.