WASHINGTON, Nov. 30 -- South Korean researchers have designed and built an inexpensive optical lens that collects light from a large area and produces a virtually distortion-free wide-angle image.
Gyeong-il Kweon of Honam University in South Korea tells optics.org about his plans to market a new wide-angle lens for security applications. Optical researchers in South Korea have developed an ...
A 500mm lens for under $200? Believe it. Adorama’s ProOptic 500mm f/6.3 ($160, direct; www.adorama.com) shares all the strengths-and drawbacks- of inexpensive catadioptric lenses. Often called mirror ...
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