Olympus DPS I Binoculars 8-16 x 40 - zoom - porro

How to read binocular specifications
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The Olympus 8-16x40 Zoom DPS I Binoculars: Answer the Call of the Wild with these Rugged Outdoor Binos, Offering Nature Lovers a Powerful 16x Zoom

Birds of prey and otherwise skittish wildlife will fall within your virtual grasp when you’re proudly equipped with the Olympus 8-16x40 Zoom DPS I Binoculars. Incredibly useful and flexible, visibility is boosted courtesy of a high-powered 8-16x zooming capability. Built for the outdoors, the standard porro prism binos feature a robust high quality finish with sure grip rubber coating plus the added worry-free feature of UV protection. They’re not only excellent for watching birds but also ideal for sports events or for taking out when walking or hiking.

Implementing high-grade optical components to ensure a perfect view even in low light conditions, further desirable qualities include anti reflective lens coating for better image brightness and contrast. Peace of mind and years of pleasure are further guaranteed thanks to a 25-year European warranty.

Exit pupil explained
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Optical Perfection, Day or Night

This particular zoom model offers an 8x to 16x magnification and a 40mm objective lens diameter. As it sounds, up to 16x magnification produces an image that appears as if the user were 16 times closer to their subject, while the objective lens diameter refers to how much light can be gathered to form that image. While for daytime use a lens diameter of 21 to 25mm is useful, for night-time viewing something between 35 to 50mm is recommended. Therefore the 40mm specification here indicates excellent suitability for low light visualisation.

Also worth considering for low light work is the exit pupil. Here that is 5.0 to 2.5mm, which for 8x40 binoculars, for example, is arrived at via 40 divided by 8 = 5 exit pupil in mm, so beyond the 2-3mm which is generally thought of as being suitable for daylight use. Another thing to take into account is the field of view, which here, due to the zoom capability, is 87-59 metres, and is defined as the width of the viewable field at a distance of 1000m from the point of observation. Closest focusing distance is 10 metres.

Angle of view
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Versatile and Bright, these Binos Will Place Nature in the Palm of your Hand

Offering an 8x to 16x zoom magnification to bring faraway points of interest that much closer plus a 40mm objective lens diameter, the Olympus 8-16x40 DPS I Binoculars incorporate fully coated lenses to deliver maximum image brightness, visual impact and image defining contrast.

Fast and easy focusing is provided courtesy of a large, centrally placed knob. The 8-16x40 DPS I model further sports a 10-12mm eye relief for extra comfort, plus diopter adjustment for comfortable viewing without glasses.

Prism types explained
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Engineered for Excellence, Built to Last

Boasting a tactile and ergonomic design and weighing a solid feel 790g, the Olympus 8-16x40 DPS I measurements are a manageable 182x152x58mm, while the package includes a neck strap, case and protective lens covers.

In summary, with a lens configuration of 6 elements in 4 groups, and a 10-12mm eye relief, the field of view at 1000m is 143m. The actual field of view is 5.0° to 3.4° while the apparent angle of view is 40° to 54.4°.

These are also binoculars that will repay your original investment with years of good service. A case in point: a 25-year warranty is included with any purchase.

Model	10x50 DPS I	8x40 DPs I	8-16x40 Zoom DPS I
Magnification	10x	8x	8-16x
Objective Lens Diameter	50mm	40mm	40mm
Exit Pupil	5	5	5.0-2.5
Relative Brightness	25	25	25-6.3
Actual Field of View	6.5°	8.2°	5.0°-3.4°
Field of View at 1000m	114m	143m	87-59m
Apparent Angle of View	65.0°	65.6°	40.0°-54.4°
Near Focus Distance	6m	4m	10m
Eye relief	12mm	12mm	10-12mm
Adjustable Eyepiece	-	-	-
Dioptric Correction	>± 2m¹	>± 2m¹	>± 1m¹
Eye interval adjustment range	60-70mm	60-70mm	60-70mm
Weight	855g	710g	790g
Dimensions WxHxD	191x178x63mm	182x139x58mm	182x152x58mm
Prism Type	Porro	Porro	Porro
General Use
Boating
Travelling
Camping / Hiking	•	•	•
Bird Watching	•	•	•
Sports / Events	•	•	•
Astronomy
Theatre / Indoor Events