To prevent lens flare, Canon’s on the job with new anti-reflective lens coating technology:
TOKYO, September 17, 2008—Canon Inc. today announced the development of Subwavelength Structure Coating (SWC), a new coating technology for camera lenses that minimizes ghosting and flare caused by reflected light. SWC is used in Canon’s concurrently announced large-diameter, wide-angle EF24mm F/1.4L II USM lens for EOS-series SLR cameras.
Reflections are caused by large changes in the refractive index of light at the glass-air boundary on the surface of a lens. To date, efforts to take advantage of light interference and minimize reflections have consisted of applying a thin film of coating onto the lens surface, but this approach can fail to provide adequate protection depending on factors like the light’s angle of incidence, and sometimes leads to ghosting and flare. [Canon Global]
You can read more about the new technology.
Tags: Anti Reflective · Coating · Filter · SWCNo Comments
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