Zoom Lens

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Zoom Lens

A lens that allows a photographer to focus so that it appears that a picture is closer to or farther away from the viewer. The first zoom lens was developed by Frank Back and was introduced in 1959.
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References in periodicals archive ?
Cosmetic contact lens plays a significant role in driving the market, although it is related to appearance or aesthetic only.
Most cataracts develop when aging or injury changes the tissue that makes up your eye's lens.
"Important for success in any new contact lens wearer is a high level of motivation.
Regardless, at 1.13 kilo, the lens isn't light by any means, but that's because of all the glass it packs inside.
Additional information on Contact Lens Health Week and the proper wear and care of contact lenses is available at https://www.cdc.gov/contactlenses.
She visited the doctor after her upper eyelid became swollen and had no idea she had been carrying the lens for almost three decades.
Lens Explorer will roll out slowly to Snapchatters on iOS only at launch and evolve over time, becoming more personal and increasingly easy to use.
People also lead busy lives - the average consumer spends more than 16 hours per day on all kind of activities - work, household chores, caring for others, or leisure activities - leaving no room for a contact lens that is uncomfortable.
Many lens designs are specially made to correct various types of vision problems.
With the advent of ultrahigh-resolution optical coherence tomography (UHR-OCT), it is possible to image the contact lens edge at the conjunctiva and visualize the PoLTF underneath the periphery of the lens [11, 16].
Since the release of the first EF lens, launched alongside the EOS series in 1987, Canon has produced EF lenses featuring world-first technologies such as the EF75-300mm f/4-5.6 IS USM with IS in 1995, the EF400mm f/4 DO IS USM with a DO lens in 2001 and the EF24mm f/1.4L II USM, treated with highly antireflective