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Posted 20 hours ago

Olympus 8x 40 DPSI Binocular

£9.9£99Clearance
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ZTS2023
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About this deal

I've had a chance to measure the true FOV on the set-square-in-the-sky: the bottom of Ursa Major between Phecda and Merak which confirmed the 8° FOV. And you don't need a tripod or stand even with the highest zoom possible on this because of the minimum shaking with this zoom. If you look at the table below, it shows that an optical system with 10 glass surfaces that are left uncoated transmit just 66% of the light that they initially capture, whilst if all 10 surfaces are multi-coated, this can be raised to 95%.

The product also comes with mono-layer coating inside the barrel, which decreases the sunlight and balances contrast of your pictures. Adromeda M31 was a fairly well defined fuzzy, although the conditions were a bit hazy with bright spotlights on the nearby bridge spoiling the dark skies, and I quickly panned across to the Triangulum galaxy which showed up very dimly: a surprise for me as I couldn't locate it with my 12x60 celestrons. This very fact combined with the 25 year warranty and 91% recommendation from the Sky at Night magazine makes these a fantastic purchase for beginners to astronomy. CA colour distortion/flare appears to be well controlled when viewing the Moon (and bright street lights) and is not noticeable under normal conditions.

Can only second what Semour suggest,loads of stuff on Gear Guide but yours is a very limited budget. Thanks to the large exit pupils of the 8x40 DPS I, bright image viewing is assured, and the apparent wide-angle field of view is a versatile 65°, delivering a broader picture.

If you or anyone else has any further related questions, please feel free to add them to the comments section at the bottom of this page.

Your eyes are prone to harmful UV rays of the sun, especially while bird watching or terrestrial viewing. They were pretty popular last year - there was a huge thread about them, nobody's talked about them much recently but they're still available. You can change your choices at any time by visiting Cookie preferences, as described in the Cookie notice. Does the Pentax SP have better fov edge sharpness than the Olympus, and what sort of field of view do you get?

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